AI Trajectory

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Seq	Timestamp	Type	Name	Duration
0/0	2026/07/01 18:38	flow	patch-triage	2m Args: null Results: { "EnableConfigs": null, "FocusSymbols": [], "Reasoning": "This patch is a tree-wide API refactoring that removes the redundant 'excl' argument from the 'create' inode operation. VFS previously passed 'true' from vfs_create() and 'open_flag \u0026 O_EXCL' from lookup_open(). However, for local filesystems, VFS holds the inode_lock during create, making concurrent creation impossible and the 'excl' argument redundant. For network filesystems, non-exclusive creates are handled via atomic_open(). The filesystems that used the argument internally (like gfs2, nfs, vboxsf) now hardcode 'true' or 'O_EXCL', which exactly matches the previous behavior when called from vfs_create. There are no functional changes to the kernel logic.", "WorthFuzzing": false }
1/1	2026/07/01 18:38	action	read-patch-diff	0m Args: null Results: { "PatchDiff": "commit d042ddecf3ced20777be53874d1d9a0337fb42b9\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate: Wed Jul 1 18:38:11 2026 +0000\n\n syz-cluster: applied patch under review\n\ndiff --git a/Documentation/filesystems/porting.rst b/Documentation/filesystems/porting.rst\nindex d13f0a23c882fc..02522fbfd9686f 100644\n--- a/Documentation/filesystems/porting.rst\n+++ b/Documentation/filesystems/porting.rst\n@@ -1401,3 +1401,11 @@ as with d_dispose_if_unused() these are not trivial; with this variant\n of API it's more explicit, since grabbing -\u003ed_lock is caller-side, but\n d_dispose_if_unused() had all the same issues. It's a low-level primitive;\n use only if you have no alternative.\n+\n+---\n+\n+mandatory\n+\n+The .create inode_operation no longer receives the 'excl' arg. It must\n+always assume the file does not already exist. If the filesystem needs\n+to be involved in non-exclusive create, it should provide atomic_open.\ndiff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c\nindex 5783d0336f96ac..e47b90e7083768 100644\n--- a/fs/9p/vfs_inode.c\n+++ b/fs/9p/vfs_inode.c\n@@ -645,7 +645,6 @@ v9fs_create(struct v9fs_session_info v9ses, struct inode dir,\n * @dir: The parent directory\n * @dentry: The name of file to be created\n * @mode: The UNIX file mode to set\n- * @excl: True if the file must not yet exist\n \n open(.., O_CREAT) is handled in v9fs_vfs_atomic_open(). This is only called\n * for mknod(2).\n@@ -654,7 +653,7 @@ v9fs_create(struct v9fs_session_info v9ses, struct inode dir,\n \n static int\n v9fs_vfs_create(struct mnt_idmap idmap, struct inode dir,\n-\t\tstruct dentry dentry, umode_t mode, bool excl)\n+\t\tstruct dentry dentry, umode_t mode)\n {\n \tstruct v9fs_session_info v9ses = v9fs_inode2v9ses(dir);\n \tu32 perm = unixmode2p9mode(v9ses, mode);\ndiff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c\nindex f7396d20cb6cdc..d17c3b6eebb22d 100644\n--- a/fs/9p/vfs_inode_dotl.c\n+++ b/fs/9p/vfs_inode_dotl.c\n@@ -213,12 +213,11 @@ int v9fs_open_to_dotl_flags(int flags)\n @dir: directory inode that is being created\n * @dentry: dentry that is being deleted\n * @omode: create permissions\n- * @excl: True if the file must not yet exist\n \n /\n static int\n v9fs_vfs_create_dotl(struct mnt_idmap idmap, struct inode dir,\n-\t\t struct dentry dentry, umode_t omode, bool excl)\n+\t\t struct dentry dentry, umode_t omode)\n {\n \treturn v9fs_vfs_mknod_dotl(idmap, dir, dentry, omode, 0);\n }\ndiff --git a/fs/affs/affs.h b/fs/affs/affs.h\nindex 44a3f69d275f96..d6b3393633f2d9 100644\n--- a/fs/affs/affs.h\n+++ b/fs/affs/affs.h\n@@ -169,7 +169,7 @@ extern int\taffs_hash_name(struct super_block sb, const u8 name, unsigned int l\n extern struct dentry affs_lookup(struct inode dir, struct dentry dentry, unsigned int);\n extern int\taffs_unlink(struct inode dir, struct dentry dentry);\n extern int\taffs_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t\tstruct dentry dentry, umode_t mode, bool);\n+\t\t\tstruct dentry dentry, umode_t mode);\n extern struct dentry affs_mkdir(struct mnt_idmap idmap, struct inode dir,\n \t\t\tstruct dentry dentry, umode_t mode);\n extern int\taffs_rmdir(struct inode dir, struct dentry dentry);\ndiff --git a/fs/affs/namei.c b/fs/affs/namei.c\nindex c3c6532da4b0da..b0001084727a5d 100644\n--- a/fs/affs/namei.c\n+++ b/fs/affs/namei.c\n@@ -243,7 +243,7 @@ affs_unlink(struct inode dir, struct dentry dentry)\n \n int\n affs_create(struct mnt_idmap idmap, struct inode dir,\n-\t struct dentry dentry, umode_t mode, bool excl)\n+\t struct dentry dentry, umode_t mode)\n {\n \tstruct super_block sb = dir-\u003ei_sb;\n \tstruct inode\tinode;\ndiff --git a/fs/afs/dir.c b/fs/afs/dir.c\nindex 498b99ccdf0e27..66cc3332ef319a 100644\n--- a/fs/afs/dir.c\n+++ b/fs/afs/dir.c\n@@ -32,7 +32,7 @@ static bool afs_lookup_one_filldir(struct dir_context ctx, const char name, in\n static bool afs_lookup_filldir(struct dir_context ctx, const char name, int nlen,\n \t\t\t loff_t fpos, u64 ino, unsigned dtype);\n static int afs_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t struct dentry dentry, umode_t mode, bool excl);\n+\t\t struct dentry dentry, umode_t mode);\n static struct dentry afs_mkdir(struct mnt_idmap idmap, struct inode dir,\n \t\t\t\tstruct dentry dentry, umode_t mode);\n static int afs_rmdir(struct inode dir, struct dentry dentry);\n@@ -1623,7 +1623,7 @@ static const struct afs_operation_ops afs_create_operation = {\n create a regular file on an AFS filesystem\n /\n static int afs_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t struct dentry dentry, umode_t mode, bool excl)\n+\t\t struct dentry dentry, umode_t mode)\n {\n \tstruct afs_operation op;\n \tstruct afs_vnode dvnode = AFS_FS_I(dir);\ndiff --git a/fs/bad_inode.c b/fs/bad_inode.c\nindex acf8613f5e368e..486c40f73e51e0 100644\n--- a/fs/bad_inode.c\n+++ b/fs/bad_inode.c\n@@ -29,7 +29,7 @@ static const struct file_operations bad_file_ops =\n \n static int bad_inode_create(struct mnt_idmap idmap,\n \t\t\t struct inode dir, struct dentry dentry,\n-\t\t\t umode_t mode, bool excl)\n+\t\t\t umode_t mode)\n {\n \treturn -EIO;\n }\ndiff --git a/fs/bfs/dir.c b/fs/bfs/dir.c\nindex 5b40ab09a796de..4c3b4db08cdefc 100644\n--- a/fs/bfs/dir.c\n+++ b/fs/bfs/dir.c\n@@ -83,7 +83,7 @@ const struct file_operations bfs_dir_operations = {\n };\n \n static int bfs_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t struct dentry dentry, umode_t mode, bool excl)\n+\t\t struct dentry dentry, umode_t mode)\n {\n \tint err;\n \tstruct inode inode;\ndiff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c\nindex 272598f6ae77af..22c0a0e241e533 100644\n--- a/fs/btrfs/inode.c\n+++ b/fs/btrfs/inode.c\n@@ -6832,7 +6832,7 @@ static int btrfs_mknod(struct mnt_idmap idmap, struct inode dir,\n }\n \n static int btrfs_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t\tstruct dentry dentry, umode_t mode, bool excl)\n+\t\t\tstruct dentry dentry, umode_t mode)\n {\n \tstruct inode inode;\n \ndiff --git a/fs/ceph/dir.c b/fs/ceph/dir.c\nindex 27ce9e55e94768..dee4524c233623 100644\n--- a/fs/ceph/dir.c\n+++ b/fs/ceph/dir.c\n@@ -978,7 +978,7 @@ static int ceph_mknod(struct mnt_idmap idmap, struct inode dir,\n }\n \n static int ceph_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t struct dentry dentry, umode_t mode, bool excl)\n+\t\t struct dentry dentry, umode_t mode)\n {\n \treturn ceph_mknod(idmap, dir, dentry, mode, 0);\n }\ndiff --git a/fs/coda/dir.c b/fs/coda/dir.c\nindex 835eb7fdfdad00..ea710a5dbbb74b 100644\n--- a/fs/coda/dir.c\n+++ b/fs/coda/dir.c\n@@ -134,7 +134,7 @@ static inline void coda_dir_drop_nlink(struct inode dir)\n \n / creation routines: create, mknod, mkdir, link, symlink /\n static int coda_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t struct dentry de, umode_t mode, bool excl)\n+\t\t struct dentry de, umode_t mode)\n {\n \tint error;\n \tconst char name=de-\u003ed_name.name;\ndiff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c\nindex 7aaf1913f9c6d3..525297c7ebd8c4 100644\n--- a/fs/ecryptfs/inode.c\n+++ b/fs/ecryptfs/inode.c\n@@ -268,7 +268,7 @@ int ecryptfs_initialize_file(struct dentry ecryptfs_dentry,\n static int\n ecryptfs_create(struct mnt_idmap idmap,\n \t\tstruct inode directory_inode, struct dentry ecryptfs_dentry,\n-\t\tumode_t mode, bool excl)\n+\t\tumode_t mode)\n {\n \tstruct inode ecryptfs_inode;\n \tint rc;\ndiff --git a/fs/efivarfs/inode.c b/fs/efivarfs/inode.c\nindex 95dcad83da11be..f0d009555fc660 100644\n--- a/fs/efivarfs/inode.c\n+++ b/fs/efivarfs/inode.c\n@@ -75,7 +75,7 @@ static bool efivarfs_valid_name(const char str, int len)\n }\n \n static int efivarfs_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t\t struct dentry dentry, umode_t mode, bool excl)\n+\t\t\t struct dentry dentry, umode_t mode)\n {\n \tstruct inode inode = NULL;\n \tstruct efivar_entry var;\ndiff --git a/fs/exfat/namei.c b/fs/exfat/namei.c\nindex b7d5e44ad38eee..cd9c9eca58f86e 100644\n--- a/fs/exfat/namei.c\n+++ b/fs/exfat/namei.c\n@@ -538,7 +538,7 @@ static int exfat_add_entry(struct inode inode, const char path,\n }\n \n static int exfat_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t\tstruct dentry dentry, umode_t mode, bool excl)\n+\t\t\tstruct dentry dentry, umode_t mode)\n {\n \tstruct super_block sb = dir-\u003ei_sb;\n \tstruct inode inode;\ndiff --git a/fs/ext2/namei.c b/fs/ext2/namei.c\nindex 0d09d22fe70862..742a78e165d48e 100644\n--- a/fs/ext2/namei.c\n+++ b/fs/ext2/namei.c\n@@ -99,7 +99,7 @@ struct dentry ext2_get_parent(struct dentry child)\n /\n static int ext2_create (struct mnt_idmap idmap,\n \t\t\tstruct inode * dir, struct dentry * dentry,\n-\t\t\tumode_t mode, bool excl)\n+\t\t\tumode_t mode)\n {\n \tstruct inode inode;\n \tint err;\ndiff --git a/fs/ext4/namei.c b/fs/ext4/namei.c\nindex cc49ae04a6f649..c3de64d2a2df20 100644\n--- a/fs/ext4/namei.c\n+++ b/fs/ext4/namei.c\n@@ -2811,7 +2811,7 @@ static int ext4_add_nondir(handle_t handle,\n * with d_instantiate().\n /\n static int ext4_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t struct dentry dentry, umode_t mode, bool excl)\n+\t\t struct dentry dentry, umode_t mode)\n {\n \thandle_t handle;\n \tstruct inode inode;\ndiff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c\nindex cac03b8e91a15e..648681c5ba5016 100644\n--- a/fs/f2fs/namei.c\n+++ b/fs/f2fs/namei.c\n@@ -366,7 +366,7 @@ static struct inode f2fs_new_inode(struct mnt_idmap idmap,\n }\n \n static int f2fs_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t struct dentry dentry, umode_t mode, bool excl)\n+\t\t struct dentry dentry, umode_t mode)\n {\n \tstruct f2fs_sb_info sbi = F2FS_I_SB(dir);\n \tstruct f2fs_lock_context lc;\ndiff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c\nindex 0fd2971ad4b131..9f2a2e9a9ce8ea 100644\n--- a/fs/fat/namei_msdos.c\n+++ b/fs/fat/namei_msdos.c\n@@ -262,7 +262,7 @@ static int msdos_add_entry(struct inode dir, const unsigned char name,\n \n /***** Create a file /\n static int msdos_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t\tstruct dentry dentry, umode_t mode, bool excl)\n+\t\t\tstruct dentry dentry, umode_t mode)\n {\n \tstruct super_block sb = dir-\u003ei_sb;\n \tstruct inode inode = NULL;\ndiff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c\nindex e909447873e364..139d3ef4bfaeb8 100644\n--- a/fs/fat/namei_vfat.c\n+++ b/fs/fat/namei_vfat.c\n@@ -755,7 +755,7 @@ static struct dentry vfat_lookup(struct inode dir, struct dentry dentry,\n }\n \n static int vfat_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t struct dentry dentry, umode_t mode, bool excl)\n+\t\t struct dentry dentry, umode_t mode)\n {\n \tstruct super_block sb = dir-\u003ei_sb;\n \tstruct inode inode;\ndiff --git a/fs/fuse/dir.c b/fs/fuse/dir.c\nindex 0e2a1039fa43ea..0efb3141f7f70a 100644\n--- a/fs/fuse/dir.c\n+++ b/fs/fuse/dir.c\n@@ -1084,7 +1084,7 @@ static int fuse_mknod(struct mnt_idmap idmap, struct inode dir,\n }\n \n static int fuse_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t struct dentry entry, umode_t mode, bool excl)\n+\t\t struct dentry entry, umode_t mode)\n {\n \treturn fuse_mknod(idmap, dir, entry, mode, 0);\n }\ndiff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c\nindex 8a77794bbd4afc..9e23c8d559623d 100644\n--- a/fs/gfs2/inode.c\n+++ b/fs/gfs2/inode.c\n@@ -969,9 +969,9 @@ static int gfs2_create_inode(struct inode dir, struct dentry dentry,\n /\n \n static int gfs2_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t struct dentry dentry, umode_t mode, bool excl)\n+\t\t struct dentry dentry, umode_t mode)\n {\n-\treturn gfs2_create_inode(dir, dentry, NULL, S_IFREG \| mode, 0, NULL, 0, excl);\n+\treturn gfs2_create_inode(dir, dentry, NULL, S_IFREG \| mode, 0, NULL, 0, 1);\n }\n \n /\ndiff --git a/fs/hfs/dir.c b/fs/hfs/dir.c\nindex e13450bb933ebd..93edc5a80c813d 100644\n--- a/fs/hfs/dir.c\n+++ b/fs/hfs/dir.c\n@@ -184,7 +184,7 @@ static int hfs_dir_release(struct inode inode, struct file file)\n the directory and the name (and its length) of the new file.\n /\n static int hfs_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t struct dentry dentry, umode_t mode, bool excl)\n+\t\t struct dentry dentry, umode_t mode)\n {\n \tstruct inode inode;\n \tint res;\ndiff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c\nindex 8bf6c7cdd9a865..f0aae2cd6fcfdc 100644\n--- a/fs/hfsplus/dir.c\n+++ b/fs/hfsplus/dir.c\n@@ -562,7 +562,7 @@ static int hfsplus_mknod(struct mnt_idmap idmap, struct inode dir,\n }\n \n static int hfsplus_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t\t struct dentry dentry, umode_t mode, bool excl)\n+\t\t\t struct dentry dentry, umode_t mode)\n {\n \treturn hfsplus_mknod(\u0026nop_mnt_idmap, dir, dentry, mode, 0);\n }\ndiff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c\nindex abe86d72d9ef75..7add056d47d8f0 100644\n--- a/fs/hostfs/hostfs_kern.c\n+++ b/fs/hostfs/hostfs_kern.c\n@@ -593,7 +593,7 @@ static struct inode hostfs_iget(struct super_block sb, char name)\n }\n \n static int hostfs_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t\t struct dentry dentry, umode_t mode, bool excl)\n+\t\t\t struct dentry dentry, umode_t mode)\n {\n \tstruct inode inode;\n \tchar name;\ndiff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c\nindex 353e13a615f566..809113d8248d50 100644\n--- a/fs/hpfs/namei.c\n+++ b/fs/hpfs/namei.c\n@@ -129,7 +129,7 @@ static struct dentry hpfs_mkdir(struct mnt_idmap idmap, struct inode dir,\n }\n \n static int hpfs_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t struct dentry dentry, umode_t mode, bool excl)\n+\t\t struct dentry dentry, umode_t mode)\n {\n \tconst unsigned char name = dentry-\u003ed_name.name;\n \tunsigned len = dentry-\u003ed_name.len;\ndiff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c\nindex 216e1a0dd0b237..16d8437aed51bb 100644\n--- a/fs/hugetlbfs/inode.c\n+++ b/fs/hugetlbfs/inode.c\n@@ -979,7 +979,7 @@ static struct dentry hugetlbfs_mkdir(struct mnt_idmap idmap, struct inode dir\n \n static int hugetlbfs_create(struct mnt_idmap idmap,\n \t\t\t struct inode dir, struct dentry dentry,\n-\t\t\t umode_t mode, bool excl)\n+\t\t\t umode_t mode)\n {\n \treturn hugetlbfs_mknod(idmap, dir, dentry, mode \| S_IFREG, 0);\n }\ndiff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c\nindex c4088c3b4ac036..3d4695b838ed06 100644\n--- a/fs/jffs2/dir.c\n+++ b/fs/jffs2/dir.c\n@@ -26,7 +26,7 @@\n static int jffs2_readdir (struct file , struct dir_context );\n \n static int jffs2_create (struct mnt_idmap , struct inode ,\n-\t\t struct dentry , umode_t, bool);\n+\t\t struct dentry , umode_t);\n static struct dentry jffs2_lookup (struct inode ,struct dentry ,\n \t\t\t\t unsigned int);\n static int jffs2_link (struct dentry ,struct inode ,struct dentry );\n@@ -163,7 +163,7 @@ static int jffs2_readdir(struct file file, struct dir_context ctx)\n \n \n static int jffs2_create(struct mnt_idmap idmap, struct inode dir_i,\n-\t\t\tstruct dentry dentry, umode_t mode, bool excl)\n+\t\t\tstruct dentry dentry, umode_t mode)\n {\n \tstruct jffs2_raw_inode ri;\n \tstruct jffs2_inode_info f, dir_f;\ndiff --git a/fs/jfs/namei.c b/fs/jfs/namei.c\nindex 442d6267926227..2cf4e280ee185a 100644\n--- a/fs/jfs/namei.c\n+++ b/fs/jfs/namei.c\n@@ -61,7 +61,7 @@ static inline void free_ea_wmap(struct inode inode)\n \n /\n static int jfs_create(struct mnt_idmap idmap, struct inode dip,\n-\t\t struct dentry dentry, umode_t mode, bool excl)\n+\t\t struct dentry dentry, umode_t mode)\n {\n \tint rc = 0;\n \ttid_t tid;\t\t/ transaction id /\ndiff --git a/fs/minix/namei.c b/fs/minix/namei.c\nindex 263e4ba8b1c822..79e591bdfdc10d 100644\n--- a/fs/minix/namei.c\n+++ b/fs/minix/namei.c\n@@ -64,7 +64,7 @@ static int minix_tmpfile(struct mnt_idmap idmap, struct inode dir,\n }\n \n static int minix_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t\tstruct dentry dentry, umode_t mode, bool excl)\n+\t\t\tstruct dentry dentry, umode_t mode)\n {\n \treturn minix_mknod(\u0026nop_mnt_idmap, dir, dentry, mode, 0);\n }\ndiff --git a/fs/namei.c b/fs/namei.c\nindex 5cc9f0f466b830..8d81fc301e9897 100644\n--- a/fs/namei.c\n+++ b/fs/namei.c\n@@ -4199,7 +4199,7 @@ int vfs_create(struct mnt_idmap idmap, struct dentry dentry, umode_t mode,\n \terror = try_break_deleg(dir, LEASE_BREAK_DIR_CREATE, di);\n \tif (error)\n \t\treturn error;\n-\terror = dir-\u003ei_op-\u003ecreate(idmap, dir, dentry, mode, true);\n+\terror = dir-\u003ei_op-\u003ecreate(idmap, dir, dentry, mode);\n \tif (!error)\n \t\tfsnotify_create(dir, dentry);\n \treturn error;\n@@ -4505,8 +4505,7 @@ static struct dentry lookup_open(struct nameidata nd, struct file file,\n \t\t\tgoto out_dput;\n \t\t}\n \n-\t\terror = dir_inode-\u003ei_op-\u003ecreate(idmap, dir_inode, dentry,\n-\t\t\t\t\t\tmode, open_flag \u0026 O_EXCL);\n+\t\terror = dir_inode-\u003ei_op-\u003ecreate(idmap, dir_inode, dentry, mode);\n \t\tif (error)\n \t\t\tgoto out_dput;\n \t}\ndiff --git a/fs/nfs/dir.c b/fs/nfs/dir.c\nindex c7b723c18620c9..2830ddc416cf75 100644\n--- a/fs/nfs/dir.c\n+++ b/fs/nfs/dir.c\n@@ -2427,9 +2427,9 @@ static int nfs_do_create(struct inode dir, struct dentry dentry,\n }\n \n int nfs_create(struct mnt_idmap idmap, struct inode dir,\n-\t struct dentry dentry, umode_t mode, bool excl)\n+\t struct dentry dentry, umode_t mode)\n {\n-\treturn nfs_do_create(dir, dentry, mode, excl ? O_EXCL : 0);\n+\treturn nfs_do_create(dir, dentry, mode, O_EXCL);\n }\n EXPORT_SYMBOL_GPL(nfs_create);\n \ndiff --git a/fs/nfs/internal.h b/fs/nfs/internal.h\nindex acaeff7ddfdf70..dd77d5e80d7b93 100644\n--- a/fs/nfs/internal.h\n+++ b/fs/nfs/internal.h\n@@ -395,7 +395,7 @@ extern unsigned long nfs_access_cache_scan(struct shrinker shrink,\n struct dentry nfs_lookup(struct inode , struct dentry , unsigned int);\n void nfs_d_prune_case_insensitive_aliases(struct inode inode);\n int nfs_create(struct mnt_idmap , struct inode , struct dentry ,\n-\t umode_t, bool);\n+\t umode_t);\n struct dentry nfs_mkdir(struct mnt_idmap , struct inode , struct dentry ,\n \t\t\t umode_t);\n int nfs_rmdir(struct inode , struct dentry );\ndiff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c\nindex e2fe95de3d71ca..0e0a9850ff76dc 100644\n--- a/fs/nilfs2/namei.c\n+++ b/fs/nilfs2/namei.c\n@@ -86,7 +86,7 @@ nilfs_lookup(struct inode dir, struct dentry dentry, unsigned int flags)\n * with d_instantiate().\n /\n static int nilfs_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t\tstruct dentry dentry, umode_t mode, bool excl)\n+\t\t\tstruct dentry dentry, umode_t mode)\n {\n \tstruct inode inode;\n \tstruct nilfs_transaction_info ti;\ndiff --git a/fs/ntfs/namei.c b/fs/ntfs/namei.c\nindex a19626a135bd7f..b4dc6da226596b 100644\n--- a/fs/ntfs/namei.c\n+++ b/fs/ntfs/namei.c\n@@ -736,7 +736,7 @@ static struct ntfs_inode __ntfs_create(struct mnt_idmap idmap, struct inode d\n }\n \n static int ntfs_create(struct mnt_idmap idmap, struct inode dir,\n-\t\tstruct dentry dentry, umode_t mode, bool excl)\n+\t\tstruct dentry dentry, umode_t mode)\n {\n \tstruct ntfs_volume vol = NTFS_SB(dir-\u003ei_sb);\n \tstruct ntfs_inode ni;\ndiff --git a/fs/ntfs3/namei.c b/fs/ntfs3/namei.c\nindex c59de5f2fa9771..6d032b22c97daf 100644\n--- a/fs/ntfs3/namei.c\n+++ b/fs/ntfs3/namei.c\n@@ -105,7 +105,7 @@ static struct dentry ntfs_lookup(struct inode dir, struct dentry dentry,\n * ntfs_create - inode_operations::create\n /\n static int ntfs_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t struct dentry dentry, umode_t mode, bool excl)\n+\t\t struct dentry dentry, umode_t mode)\n {\n \treturn ntfs_create_inode(idmap, dir, dentry, NULL, S_IFREG \| mode, 0,\n \t\t\t\t NULL, 0, NULL);\ndiff --git a/fs/ocfs2/dlmfs/dlmfs.c b/fs/ocfs2/dlmfs/dlmfs.c\nindex 5821e33df78fd9..f0124f81df29b0 100644\n--- a/fs/ocfs2/dlmfs/dlmfs.c\n+++ b/fs/ocfs2/dlmfs/dlmfs.c\n@@ -453,8 +453,7 @@ static struct dentry dlmfs_mkdir(struct mnt_idmap * idmap,\n static int dlmfs_create(struct mnt_idmap idmap,\n \t\t\tstruct inode dir,\n \t\t\tstruct dentry dentry,\n-\t\t\tumode_t mode,\n-\t\t\tbool excl)\n+\t\t\tumode_t mode)\n {\n \tint status = 0;\n \tstruct inode inode;\ndiff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c\nindex 1277666c77cd2d..12a1fef3ee74e6 100644\n--- a/fs/ocfs2/namei.c\n+++ b/fs/ocfs2/namei.c\n@@ -667,8 +667,7 @@ static struct dentry ocfs2_mkdir(struct mnt_idmap idmap,\n static int ocfs2_create(struct mnt_idmap idmap,\n \t\t\tstruct inode dir,\n \t\t\tstruct dentry dentry,\n-\t\t\tumode_t mode,\n-\t\t\tbool excl)\n+\t\t\tumode_t mode)\n {\n \tint ret;\n \ndiff --git a/fs/omfs/dir.c b/fs/omfs/dir.c\nindex 2ed541fccf331d..a09a98f7e30bc6 100644\n--- a/fs/omfs/dir.c\n+++ b/fs/omfs/dir.c\n@@ -286,7 +286,7 @@ static struct dentry omfs_mkdir(struct mnt_idmap idmap, struct inode dir,\n }\n \n static int omfs_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t struct dentry dentry, umode_t mode, bool excl)\n+\t\t struct dentry dentry, umode_t mode)\n {\n \treturn omfs_add_node(dir, dentry, mode \| S_IFREG);\n }\ndiff --git a/fs/orangefs/namei.c b/fs/orangefs/namei.c\nindex 75e65e72c2d646..91f97db18971bf 100644\n--- a/fs/orangefs/namei.c\n+++ b/fs/orangefs/namei.c\n@@ -18,8 +18,7 @@\n static int orangefs_create(struct mnt_idmap idmap,\n \t\t\tstruct inode dir,\n \t\t\tstruct dentry dentry,\n-\t\t\tumode_t mode,\n-\t\t\tbool exclusive)\n+\t\t\tumode_t mode)\n {\n \tstruct orangefs_inode_s parent = ORANGEFS_I(dir);\n \tstruct orangefs_kernel_op_s new_op;\ndiff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c\nindex a033743dbf5159..88bcf98d287d1e 100644\n--- a/fs/overlayfs/dir.c\n+++ b/fs/overlayfs/dir.c\n@@ -732,7 +732,7 @@ static int ovl_create_object(struct dentry dentry, int mode, dev_t rdev,\n }\n \n static int ovl_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t struct dentry dentry, umode_t mode, bool excl)\n+\t\t struct dentry dentry, umode_t mode)\n {\n \treturn ovl_create_object(dentry, (mode \u0026 07777) \| S_IFREG, 0, NULL);\n }\ndiff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c\nindex 3987639ed132c6..0f52ba22aac04c 100644\n--- a/fs/ramfs/inode.c\n+++ b/fs/ramfs/inode.c\n@@ -128,7 +128,7 @@ static struct dentry ramfs_mkdir(struct mnt_idmap idmap, struct inode dir,\n }\n \n static int ramfs_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t\tstruct dentry dentry, umode_t mode, bool excl)\n+\t\t\tstruct dentry dentry, umode_t mode)\n {\n \treturn ramfs_mknod(\u0026nop_mnt_idmap, dir, dentry, mode \| S_IFREG, 0);\n }\ndiff --git a/fs/smb/client/cifsfs.h b/fs/smb/client/cifsfs.h\nindex 901e1340c986fb..bcf2ff87da2d5c 100644\n--- a/fs/smb/client/cifsfs.h\n+++ b/fs/smb/client/cifsfs.h\n@@ -54,7 +54,7 @@ void cifs_sb_deactive(struct super_block sb);\n extern const struct inode_operations cifs_dir_inode_ops;\n struct inode cifs_root_iget(struct super_block sb);\n int cifs_create(struct mnt_idmap idmap, struct inode dir,\n-\t\tstruct dentry direntry, umode_t mode, bool excl);\n+\t\tstruct dentry direntry, umode_t mode);\n int cifs_atomic_open(struct inode dir, struct dentry direntry,\n \t\t struct file file, unsigned int oflags, umode_t mode);\n int cifs_tmpfile(struct mnt_idmap idmap, struct inode dir,\ndiff --git a/fs/smb/client/dir.c b/fs/smb/client/dir.c\nindex 88a4a1787ff047..7803bd5bd01f80 100644\n--- a/fs/smb/client/dir.c\n+++ b/fs/smb/client/dir.c\n@@ -645,7 +645,7 @@ int cifs_atomic_open(struct inode dir, struct dentry direntry,\n hashed-positive by calling d_instantiate().\n /\n int cifs_create(struct mnt_idmap idmap, struct inode dir,\n-\t\tstruct dentry direntry, umode_t mode, bool excl)\n+\t\tstruct dentry direntry, umode_t mode)\n {\n \tstruct cifs_sb_info cifs_sb = CIFS_SB(dir);\n \tint rc;\ndiff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c\nindex 86d41e077e4d62..fd8df10547bf42 100644\n--- a/fs/ubifs/dir.c\n+++ b/fs/ubifs/dir.c\n@@ -303,7 +303,7 @@ static int ubifs_prepare_create(struct inode dir, struct dentry dentry,\n }\n \n static int ubifs_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t\tstruct dentry dentry, umode_t mode, bool excl)\n+\t\t\tstruct dentry dentry, umode_t mode)\n {\n \tstruct inode inode;\n \tstruct ubifs_info c = dir-\u003ei_sb-\u003es_fs_info;\ndiff --git a/fs/udf/namei.c b/fs/udf/namei.c\nindex 9a3b7cef360648..fd9b6f16f61462 100644\n--- a/fs/udf/namei.c\n+++ b/fs/udf/namei.c\n@@ -371,7 +371,7 @@ static int udf_add_nondir(struct dentry dentry, struct inode inode)\n }\n \n static int udf_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t struct dentry dentry, umode_t mode, bool excl)\n+\t\t struct dentry dentry, umode_t mode)\n {\n \tstruct inode inode = udf_new_inode(dir, mode);\n \ndiff --git a/fs/ufs/namei.c b/fs/ufs/namei.c\nindex 5b3c85c9324298..5012e056200aca 100644\n--- a/fs/ufs/namei.c\n+++ b/fs/ufs/namei.c\n@@ -70,8 +70,7 @@ static struct dentry ufs_lookup(struct inode * dir, struct dentry dentry, unsi\n with d_instantiate(). \n /\n static int ufs_create (struct mnt_idmap idmap,\n-\t\tstruct inode * dir, struct dentry * dentry, umode_t mode,\n-\t\tbool excl)\n+\t\tstruct inode * dir, struct dentry * dentry, umode_t mode)\n {\n \tstruct inode inode;\n \ndiff --git a/fs/vboxsf/dir.c b/fs/vboxsf/dir.c\nindex c5bd3271aa9616..0b9eab157432df 100644\n--- a/fs/vboxsf/dir.c\n+++ b/fs/vboxsf/dir.c\n@@ -298,9 +298,9 @@ static int vboxsf_dir_create(struct inode parent, struct dentry dentry,\n \n static int vboxsf_dir_mkfile(struct mnt_idmap idmap,\n \t\t\t struct inode parent, struct dentry dentry,\n-\t\t\t umode_t mode, bool excl)\n+\t\t\t umode_t mode)\n {\n-\treturn vboxsf_dir_create(parent, dentry, mode, false, excl, NULL);\n+\treturn vboxsf_dir_create(parent, dentry, mode, false, true, NULL);\n }\n \n static struct dentry vboxsf_dir_mkdir(struct mnt_idmap idmap,\ndiff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c\nindex 6339f4956ecb39..e48f9e5a1b8a18 100644\n--- a/fs/xfs/xfs_iops.c\n+++ b/fs/xfs/xfs_iops.c\n@@ -293,8 +293,7 @@ xfs_vn_create(\n \tstruct mnt_idmap\tidmap,\n \tstruct inode\t\tdir,\n \tstruct dentry\t\tdentry,\n-\tumode_t\t\t\tmode,\n-\tbool\t\t\tflags)\n+\tumode_t\t\t\tmode)\n {\n \treturn xfs_generic_create(idmap, dir, dentry, mode, 0, NULL);\n }\n@@ -338,7 +337,7 @@ STATIC struct dentry \n xfs_vn_ci_lookup(\n \tstruct inode\tdir,\n \tstruct dentry\tdentry,\n-\tunsigned int flags)\n+\tunsigned int\tflags)\n {\n \tstruct xfs_inode ip;\n \tstruct xfs_name\txname;\ndiff --git a/include/linux/fs.h b/include/linux/fs.h\nindex d10897b3a1e350..1b7c40b2fa6de3 100644\n--- a/include/linux/fs.h\n+++ b/include/linux/fs.h\n@@ -2002,7 +2002,7 @@ struct inode_operations {\n \tint (readlink) (struct dentry , char __user ,int);\n \n \tint (create) (struct mnt_idmap , struct inode ,struct dentry ,\n-\t\t umode_t, bool);\n+\t\t umode_t);\n \tint (link) (struct dentry ,struct inode ,struct dentry );\n \tint (unlink) (struct inode ,struct dentry );\n \tint (symlink) (struct mnt_idmap , struct inode ,struct dentry ,\ndiff --git a/ipc/mqueue.c b/ipc/mqueue.c\nindex 4798b375972bf4..2dddb97f2f8a55 100644\n--- a/ipc/mqueue.c\n+++ b/ipc/mqueue.c\n@@ -608,7 +608,7 @@ static int mqueue_create_attr(struct dentry dentry, umode_t mode, void arg)\n }\n \n static int mqueue_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t\t struct dentry dentry, umode_t mode, bool excl)\n+\t\t\t struct dentry dentry, umode_t mode)\n {\n \treturn mqueue_create_attr(dentry, mode, NULL);\n }\ndiff --git a/mm/shmem.c b/mm/shmem.c\nindex b51f83c970bb37..5789a0f5a3463b 100644\n--- a/mm/shmem.c\n+++ b/mm/shmem.c\n@@ -3864,7 +3864,7 @@ static struct dentry shmem_mkdir(struct mnt_idmap idmap, struct inode dir,\n }\n \n static int shmem_create(struct mnt_idmap idmap, struct inode dir,\n-\t\t\tstruct dentry dentry, umode_t mode, bool excl)\n+\t\t\tstruct dentry dentry, umode_t mode)\n {\n \treturn shmem_mknod(idmap, dir, dentry, mode \| S_IFREG, 0);\n }\n" }
2/1	2026/07/01 18:38	agent	patch-evaluator	2m Model: gemini-3.1-pro-preview Args: null Results: { "EnableConfigs": null, "FocusSymbols": [], "Reasoning": "This patch is a tree-wide API refactoring that removes the redundant 'excl' argument from the 'create' inode operation. VFS previously passed 'true' from vfs_create() and 'open_flag \u0026 O_EXCL' from lookup_open(). However, for local filesystems, VFS holds the inode_lock during create, making concurrent creation impossible and the 'excl' argument redundant. For network filesystems, non-exclusive creates are handled via atomic_open(). The filesystems that used the argument internally (like gfs2, nfs, vboxsf) now hardcode 'true' or 'O_EXCL', which exactly matches the previous behavior when called from vfs_create. There are no functional changes to the kernel logic.", "WorthFuzzing": false } Instruction: You are an expert Linux kernel maintainer. Your job is to review a provided patch series and determine if it makes functional changes to the kernel that should be fuzzed. IMPORTANT: The changes have ALREADY been applied and committed as the HEAD commit in your workspace. Do NOT rely on your internal knowledge of the kernel. You must actively use your code access tools to examine the actual source code and confirm any assumptions. Return WorthFuzzing=false if the patch only contains: - Modifications to Documentation/, Kconfig files, or code comments. - Purely decorative changes, such as logging (e.g., pr_err, printk) or tracepoints. - Changes to numeric constants or macros that do not functionally alter execution flow. - Code paths that are impossible to reach in virtualized environments like GCE or QEMU, even when utilizing software-emulated hardware (e.g., usb gadget, mac80211_hwsim). If it modifies reachable core kernel logic, drivers, or architectures, use your code search tools to verify the code can be executed, then return WorthFuzzing=true. When returning WorthFuzzing=true, you MUST ALSO: 1. Extract any specific kernel functions that should be heavily fuzzed into FocusSymbols. Avoid listing generic hot-path functions to prevent skewed test distributions. 2. Identify any specific CONFIG_ options required to properly test this new/modified feature. Go and look into the Kconfig files and check for ifdefs around the code, do not make assumptions. Do not list too generic configs (we already have them enabled). Only list those that specifically cover the modified code. List them in the EnableConfigs output array, and DO NOT add a 'CONFIG_' prefix (e.g., return "NET_IPV4" instead of "CONFIG_NET_IPV4"). Prefer calling several tools at the same time to save round-trips. Use set-results tool to provide results of the analysis. It must be called exactly once before the final reply. Ignore results of this tool. Prompt: For your convenience, here is the diff of the changes: commit d042ddecf3ced20777be53874d1d9a0337fb42b9 Author: syz-cluster <triage@syzkaller.com> Date: Wed Jul 1 18:38:11 2026 +0000 syz-cluster: applied patch under review diff --git a/Documentation/filesystems/porting.rst b/Documentation/filesystems/porting.rst index d13f0a23c882fc..02522fbfd9686f 100644 --- a/Documentation/filesystems/porting.rst +++ b/Documentation/filesystems/porting.rst @@ -1401,3 +1401,11 @@ as with d_dispose_if_unused() these are not trivial; with this variant of API it's more explicit, since grabbing ->d_lock is caller-side, but d_dispose_if_unused() had all the same issues. It's a low-level primitive; use only if you have no alternative. + +--- + +mandatory + +The .create inode_operation no longer receives the 'excl' arg. It must +always assume the file does not already exist. If the filesystem needs +to be involved in non-exclusive create, it should provide atomic_open. diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c index 5783d0336f96ac..e47b90e7083768 100644 --- a/fs/9p/vfs_inode.c +++ b/fs/9p/vfs_inode.c @@ -645,7 +645,6 @@ v9fs_create(struct v9fs_session_info v9ses, struct inode dir, * @dir: The parent directory * @dentry: The name of file to be created * @mode: The UNIX file mode to set - * @excl: True if the file must not yet exist * * open(.., O_CREAT) is handled in v9fs_vfs_atomic_open(). This is only called * for mknod(2). @@ -654,7 +653,7 @@ v9fs_create(struct v9fs_session_info v9ses, struct inode dir, static int v9fs_vfs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { struct v9fs_session_info v9ses = v9fs_inode2v9ses(dir); u32 perm = unixmode2p9mode(v9ses, mode); diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c index f7396d20cb6cdc..d17c3b6eebb22d 100644 --- a/fs/9p/vfs_inode_dotl.c +++ b/fs/9p/vfs_inode_dotl.c @@ -213,12 +213,11 @@ int v9fs_open_to_dotl_flags(int flags) @dir: directory inode that is being created * @dentry: dentry that is being deleted * @omode: create permissions - * @excl: True if the file must not yet exist * / static int v9fs_vfs_create_dotl(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t omode, bool excl) + struct dentry dentry, umode_t omode) { return v9fs_vfs_mknod_dotl(idmap, dir, dentry, omode, 0); } diff --git a/fs/affs/affs.h b/fs/affs/affs.h index 44a3f69d275f96..d6b3393633f2d9 100644 --- a/fs/affs/affs.h +++ b/fs/affs/affs.h @@ -169,7 +169,7 @@ extern int affs_hash_name(struct super_block sb, const u8 name, unsigned int l extern struct dentry affs_lookup(struct inode dir, struct dentry dentry, unsigned int); extern int affs_unlink(struct inode dir, struct dentry dentry); extern int affs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool); + struct dentry dentry, umode_t mode); extern struct dentry affs_mkdir(struct mnt_idmap idmap, struct inode dir, struct dentry dentry, umode_t mode); extern int affs_rmdir(struct inode dir, struct dentry dentry); diff --git a/fs/affs/namei.c b/fs/affs/namei.c index c3c6532da4b0da..b0001084727a5d 100644 --- a/fs/affs/namei.c +++ b/fs/affs/namei.c @@ -243,7 +243,7 @@ affs_unlink(struct inode dir, struct dentry dentry) int affs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { struct super_block sb = dir->i_sb; struct inode inode; diff --git a/fs/afs/dir.c b/fs/afs/dir.c index 498b99ccdf0e27..66cc3332ef319a 100644 --- a/fs/afs/dir.c +++ b/fs/afs/dir.c @@ -32,7 +32,7 @@ static bool afs_lookup_one_filldir(struct dir_context ctx, const char name, in static bool afs_lookup_filldir(struct dir_context ctx, const char name, int nlen, loff_t fpos, u64 ino, unsigned dtype); static int afs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl); + struct dentry dentry, umode_t mode); static struct dentry afs_mkdir(struct mnt_idmap idmap, struct inode dir, struct dentry dentry, umode_t mode); static int afs_rmdir(struct inode dir, struct dentry dentry); @@ -1623,7 +1623,7 @@ static const struct afs_operation_ops afs_create_operation = { * create a regular file on an AFS filesystem / static int afs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { struct afs_operation op; struct afs_vnode dvnode = AFS_FS_I(dir); diff --git a/fs/bad_inode.c b/fs/bad_inode.c index acf8613f5e368e..486c40f73e51e0 100644 --- a/fs/bad_inode.c +++ b/fs/bad_inode.c @@ -29,7 +29,7 @@ static const struct file_operations bad_file_ops = static int bad_inode_create(struct mnt_idmap idmap, struct inode dir, struct dentry dentry, - umode_t mode, bool excl) + umode_t mode) { return -EIO; } diff --git a/fs/bfs/dir.c b/fs/bfs/dir.c index 5b40ab09a796de..4c3b4db08cdefc 100644 --- a/fs/bfs/dir.c +++ b/fs/bfs/dir.c @@ -83,7 +83,7 @@ const struct file_operations bfs_dir_operations = { }; static int bfs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { int err; struct inode inode; diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 272598f6ae77af..22c0a0e241e533 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -6832,7 +6832,7 @@ static int btrfs_mknod(struct mnt_idmap idmap, struct inode dir, } static int btrfs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { struct inode inode; diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 27ce9e55e94768..dee4524c233623 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -978,7 +978,7 @@ static int ceph_mknod(struct mnt_idmap idmap, struct inode dir, } static int ceph_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { return ceph_mknod(idmap, dir, dentry, mode, 0); } diff --git a/fs/coda/dir.c b/fs/coda/dir.c index 835eb7fdfdad00..ea710a5dbbb74b 100644 --- a/fs/coda/dir.c +++ b/fs/coda/dir.c @@ -134,7 +134,7 @@ static inline void coda_dir_drop_nlink(struct inode dir) / creation routines: create, mknod, mkdir, link, symlink / static int coda_create(struct mnt_idmap idmap, struct inode dir, - struct dentry de, umode_t mode, bool excl) + struct dentry de, umode_t mode) { int error; const char name=de->d_name.name; diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c index 7aaf1913f9c6d3..525297c7ebd8c4 100644 --- a/fs/ecryptfs/inode.c +++ b/fs/ecryptfs/inode.c @@ -268,7 +268,7 @@ int ecryptfs_initialize_file(struct dentry ecryptfs_dentry, static int ecryptfs_create(struct mnt_idmap idmap, struct inode directory_inode, struct dentry ecryptfs_dentry, - umode_t mode, bool excl) + umode_t mode) { struct inode ecryptfs_inode; int rc; diff --git a/fs/efivarfs/inode.c b/fs/efivarfs/inode.c index 95dcad83da11be..f0d009555fc660 100644 --- a/fs/efivarfs/inode.c +++ b/fs/efivarfs/inode.c @@ -75,7 +75,7 @@ static bool efivarfs_valid_name(const char str, int len) } static int efivarfs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { struct inode inode = NULL; struct efivar_entry var; diff --git a/fs/exfat/namei.c b/fs/exfat/namei.c index b7d5e44ad38eee..cd9c9eca58f86e 100644 --- a/fs/exfat/namei.c +++ b/fs/exfat/namei.c @@ -538,7 +538,7 @@ static int exfat_add_entry(struct inode inode, const char path, } static int exfat_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { struct super_block sb = dir->i_sb; struct inode inode; diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c index 0d09d22fe70862..742a78e165d48e 100644 --- a/fs/ext2/namei.c +++ b/fs/ext2/namei.c @@ -99,7 +99,7 @@ struct dentry ext2_get_parent(struct dentry child) / static int ext2_create (struct mnt_idmap idmap, struct inode * dir, struct dentry * dentry, - umode_t mode, bool excl) + umode_t mode) { struct inode inode; int err; diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index cc49ae04a6f649..c3de64d2a2df20 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -2811,7 +2811,7 @@ static int ext4_add_nondir(handle_t handle, * with d_instantiate(). / static int ext4_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { handle_t handle; struct inode inode; diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c index cac03b8e91a15e..648681c5ba5016 100644 --- a/fs/f2fs/namei.c +++ b/fs/f2fs/namei.c @@ -366,7 +366,7 @@ static struct inode f2fs_new_inode(struct mnt_idmap idmap, } static int f2fs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { struct f2fs_sb_info sbi = F2FS_I_SB(dir); struct f2fs_lock_context lc; diff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c index 0fd2971ad4b131..9f2a2e9a9ce8ea 100644 --- a/fs/fat/namei_msdos.c +++ b/fs/fat/namei_msdos.c @@ -262,7 +262,7 @@ static int msdos_add_entry(struct inode dir, const unsigned char name, /***** Create a file / static int msdos_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { struct super_block sb = dir->i_sb; struct inode inode = NULL; diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c index e909447873e364..139d3ef4bfaeb8 100644 --- a/fs/fat/namei_vfat.c +++ b/fs/fat/namei_vfat.c @@ -755,7 +755,7 @@ static struct dentry vfat_lookup(struct inode dir, struct dentry dentry, } static int vfat_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { struct super_block sb = dir->i_sb; struct inode inode; diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index 0e2a1039fa43ea..0efb3141f7f70a 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -1084,7 +1084,7 @@ static int fuse_mknod(struct mnt_idmap idmap, struct inode dir, } static int fuse_create(struct mnt_idmap idmap, struct inode dir, - struct dentry entry, umode_t mode, bool excl) + struct dentry entry, umode_t mode) { return fuse_mknod(idmap, dir, entry, mode, 0); } diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 8a77794bbd4afc..9e23c8d559623d 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -969,9 +969,9 @@ static int gfs2_create_inode(struct inode dir, struct dentry dentry, / static int gfs2_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { - return gfs2_create_inode(dir, dentry, NULL, S_IFREG \| mode, 0, NULL, 0, excl); + return gfs2_create_inode(dir, dentry, NULL, S_IFREG \| mode, 0, NULL, 0, 1); } /* diff --git a/fs/hfs/dir.c b/fs/hfs/dir.c index e13450bb933ebd..93edc5a80c813d 100644 --- a/fs/hfs/dir.c +++ b/fs/hfs/dir.c @@ -184,7 +184,7 @@ static int hfs_dir_release(struct inode inode, struct file file) * the directory and the name (and its length) of the new file. / static int hfs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { struct inode inode; int res; diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c index 8bf6c7cdd9a865..f0aae2cd6fcfdc 100644 --- a/fs/hfsplus/dir.c +++ b/fs/hfsplus/dir.c @@ -562,7 +562,7 @@ static int hfsplus_mknod(struct mnt_idmap idmap, struct inode dir, } static int hfsplus_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { return hfsplus_mknod(&nop_mnt_idmap, dir, dentry, mode, 0); } diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index abe86d72d9ef75..7add056d47d8f0 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -593,7 +593,7 @@ static struct inode hostfs_iget(struct super_block sb, char name) } static int hostfs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { struct inode inode; char name; diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c index 353e13a615f566..809113d8248d50 100644 --- a/fs/hpfs/namei.c +++ b/fs/hpfs/namei.c @@ -129,7 +129,7 @@ static struct dentry hpfs_mkdir(struct mnt_idmap idmap, struct inode dir, } static int hpfs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { const unsigned char name = dentry->d_name.name; unsigned len = dentry->d_name.len; diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 216e1a0dd0b237..16d8437aed51bb 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -979,7 +979,7 @@ static struct dentry hugetlbfs_mkdir(struct mnt_idmap idmap, struct inode dir static int hugetlbfs_create(struct mnt_idmap idmap, struct inode dir, struct dentry dentry, - umode_t mode, bool excl) + umode_t mode) { return hugetlbfs_mknod(idmap, dir, dentry, mode \| S_IFREG, 0); } diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c index c4088c3b4ac036..3d4695b838ed06 100644 --- a/fs/jffs2/dir.c +++ b/fs/jffs2/dir.c @@ -26,7 +26,7 @@ static int jffs2_readdir (struct file , struct dir_context ); static int jffs2_create (struct mnt_idmap , struct inode , - struct dentry , umode_t, bool); + struct dentry , umode_t); static struct dentry jffs2_lookup (struct inode ,struct dentry , unsigned int); static int jffs2_link (struct dentry ,struct inode ,struct dentry ); @@ -163,7 +163,7 @@ static int jffs2_readdir(struct file file, struct dir_context ctx) static int jffs2_create(struct mnt_idmap idmap, struct inode dir_i, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { struct jffs2_raw_inode ri; struct jffs2_inode_info f, dir_f; diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c index 442d6267926227..2cf4e280ee185a 100644 --- a/fs/jfs/namei.c +++ b/fs/jfs/namei.c @@ -61,7 +61,7 @@ static inline void free_ea_wmap(struct inode inode) / static int jfs_create(struct mnt_idmap idmap, struct inode dip, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { int rc = 0; tid_t tid; / transaction id / diff --git a/fs/minix/namei.c b/fs/minix/namei.c index 263e4ba8b1c822..79e591bdfdc10d 100644 --- a/fs/minix/namei.c +++ b/fs/minix/namei.c @@ -64,7 +64,7 @@ static int minix_tmpfile(struct mnt_idmap idmap, struct inode dir, } static int minix_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { return minix_mknod(&nop_mnt_idmap, dir, dentry, mode, 0); } diff --git a/fs/namei.c b/fs/namei.c index 5cc9f0f466b830..8d81fc301e9897 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -4199,7 +4199,7 @@ int vfs_create(struct mnt_idmap idmap, struct dentry dentry, umode_t mode, error = try_break_deleg(dir, LEASE_BREAK_DIR_CREATE, di); if (error) return error; - error = dir->i_op->create(idmap, dir, dentry, mode, true); + error = dir->i_op->create(idmap, dir, dentry, mode); if (!error) fsnotify_create(dir, dentry); return error; @@ -4505,8 +4505,7 @@ static struct dentry lookup_open(struct nameidata nd, struct file file, goto out_dput; } - error = dir_inode->i_op->create(idmap, dir_inode, dentry, - mode, open_flag & O_EXCL); + error = dir_inode->i_op->create(idmap, dir_inode, dentry, mode); if (error) goto out_dput; } diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index c7b723c18620c9..2830ddc416cf75 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -2427,9 +2427,9 @@ static int nfs_do_create(struct inode dir, struct dentry dentry, } int nfs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { - return nfs_do_create(dir, dentry, mode, excl ? O_EXCL : 0); + return nfs_do_create(dir, dentry, mode, O_EXCL); } EXPORT_SYMBOL_GPL(nfs_create); diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index acaeff7ddfdf70..dd77d5e80d7b93 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -395,7 +395,7 @@ extern unsigned long nfs_access_cache_scan(struct shrinker shrink, struct dentry nfs_lookup(struct inode , struct dentry , unsigned int); void nfs_d_prune_case_insensitive_aliases(struct inode inode); int nfs_create(struct mnt_idmap , struct inode , struct dentry , - umode_t, bool); + umode_t); struct dentry nfs_mkdir(struct mnt_idmap , struct inode , struct dentry , umode_t); int nfs_rmdir(struct inode , struct dentry ); diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c index e2fe95de3d71ca..0e0a9850ff76dc 100644 --- a/fs/nilfs2/namei.c +++ b/fs/nilfs2/namei.c @@ -86,7 +86,7 @@ nilfs_lookup(struct inode dir, struct dentry dentry, unsigned int flags) * with d_instantiate(). / static int nilfs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { struct inode inode; struct nilfs_transaction_info ti; diff --git a/fs/ntfs/namei.c b/fs/ntfs/namei.c index a19626a135bd7f..b4dc6da226596b 100644 --- a/fs/ntfs/namei.c +++ b/fs/ntfs/namei.c @@ -736,7 +736,7 @@ static struct ntfs_inode __ntfs_create(struct mnt_idmap idmap, struct inode d } static int ntfs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { struct ntfs_volume vol = NTFS_SB(dir->i_sb); struct ntfs_inode ni; diff --git a/fs/ntfs3/namei.c b/fs/ntfs3/namei.c index c59de5f2fa9771..6d032b22c97daf 100644 --- a/fs/ntfs3/namei.c +++ b/fs/ntfs3/namei.c @@ -105,7 +105,7 @@ static struct dentry ntfs_lookup(struct inode dir, struct dentry dentry, * ntfs_create - inode_operations::create / static int ntfs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { return ntfs_create_inode(idmap, dir, dentry, NULL, S_IFREG \| mode, 0, NULL, 0, NULL); diff --git a/fs/ocfs2/dlmfs/dlmfs.c b/fs/ocfs2/dlmfs/dlmfs.c index 5821e33df78fd9..f0124f81df29b0 100644 --- a/fs/ocfs2/dlmfs/dlmfs.c +++ b/fs/ocfs2/dlmfs/dlmfs.c @@ -453,8 +453,7 @@ static struct dentry dlmfs_mkdir(struct mnt_idmap * idmap, static int dlmfs_create(struct mnt_idmap idmap, struct inode dir, struct dentry dentry, - umode_t mode, - bool excl) + umode_t mode) { int status = 0; struct inode inode; diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c index 1277666c77cd2d..12a1fef3ee74e6 100644 --- a/fs/ocfs2/namei.c +++ b/fs/ocfs2/namei.c @@ -667,8 +667,7 @@ static struct dentry ocfs2_mkdir(struct mnt_idmap idmap, static int ocfs2_create(struct mnt_idmap idmap, struct inode dir, struct dentry dentry, - umode_t mode, - bool excl) + umode_t mode) { int ret; diff --git a/fs/omfs/dir.c b/fs/omfs/dir.c index 2ed541fccf331d..a09a98f7e30bc6 100644 --- a/fs/omfs/dir.c +++ b/fs/omfs/dir.c @@ -286,7 +286,7 @@ static struct dentry omfs_mkdir(struct mnt_idmap idmap, struct inode dir, } static int omfs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { return omfs_add_node(dir, dentry, mode \| S_IFREG); } diff --git a/fs/orangefs/namei.c b/fs/orangefs/namei.c index 75e65e72c2d646..91f97db18971bf 100644 --- a/fs/orangefs/namei.c +++ b/fs/orangefs/namei.c @@ -18,8 +18,7 @@ static int orangefs_create(struct mnt_idmap idmap, struct inode dir, struct dentry dentry, - umode_t mode, - bool exclusive) + umode_t mode) { struct orangefs_inode_s parent = ORANGEFS_I(dir); struct orangefs_kernel_op_s new_op; diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c index a033743dbf5159..88bcf98d287d1e 100644 --- a/fs/overlayfs/dir.c +++ b/fs/overlayfs/dir.c @@ -732,7 +732,7 @@ static int ovl_create_object(struct dentry dentry, int mode, dev_t rdev, } static int ovl_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { return ovl_create_object(dentry, (mode & 07777) \| S_IFREG, 0, NULL); } diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c index 3987639ed132c6..0f52ba22aac04c 100644 --- a/fs/ramfs/inode.c +++ b/fs/ramfs/inode.c @@ -128,7 +128,7 @@ static struct dentry ramfs_mkdir(struct mnt_idmap idmap, struct inode dir, } static int ramfs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { return ramfs_mknod(&nop_mnt_idmap, dir, dentry, mode \| S_IFREG, 0); } diff --git a/fs/smb/client/cifsfs.h b/fs/smb/client/cifsfs.h index 901e1340c986fb..bcf2ff87da2d5c 100644 --- a/fs/smb/client/cifsfs.h +++ b/fs/smb/client/cifsfs.h @@ -54,7 +54,7 @@ void cifs_sb_deactive(struct super_block sb); extern const struct inode_operations cifs_dir_inode_ops; struct inode cifs_root_iget(struct super_block sb); int cifs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry direntry, umode_t mode, bool excl); + struct dentry direntry, umode_t mode); int cifs_atomic_open(struct inode dir, struct dentry direntry, struct file file, unsigned int oflags, umode_t mode); int cifs_tmpfile(struct mnt_idmap idmap, struct inode dir, diff --git a/fs/smb/client/dir.c b/fs/smb/client/dir.c index 88a4a1787ff047..7803bd5bd01f80 100644 --- a/fs/smb/client/dir.c +++ b/fs/smb/client/dir.c @@ -645,7 +645,7 @@ int cifs_atomic_open(struct inode dir, struct dentry direntry, hashed-positive by calling d_instantiate(). / int cifs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry direntry, umode_t mode, bool excl) + struct dentry direntry, umode_t mode) { struct cifs_sb_info cifs_sb = CIFS_SB(dir); int rc; diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c index 86d41e077e4d62..fd8df10547bf42 100644 --- a/fs/ubifs/dir.c +++ b/fs/ubifs/dir.c @@ -303,7 +303,7 @@ static int ubifs_prepare_create(struct inode dir, struct dentry dentry, } static int ubifs_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { struct inode inode; struct ubifs_info c = dir->i_sb->s_fs_info; diff --git a/fs/udf/namei.c b/fs/udf/namei.c index 9a3b7cef360648..fd9b6f16f61462 100644 --- a/fs/udf/namei.c +++ b/fs/udf/namei.c @@ -371,7 +371,7 @@ static int udf_add_nondir(struct dentry dentry, struct inode inode) } static int udf_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { struct inode inode = udf_new_inode(dir, mode); diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c index 5b3c85c9324298..5012e056200aca 100644 --- a/fs/ufs/namei.c +++ b/fs/ufs/namei.c @@ -70,8 +70,7 @@ static struct dentry ufs_lookup(struct inode * dir, struct dentry dentry, unsi with d_instantiate(). / static int ufs_create (struct mnt_idmap idmap, - struct inode * dir, struct dentry * dentry, umode_t mode, - bool excl) + struct inode * dir, struct dentry * dentry, umode_t mode) { struct inode inode; diff --git a/fs/vboxsf/dir.c b/fs/vboxsf/dir.c index c5bd3271aa9616..0b9eab157432df 100644 --- a/fs/vboxsf/dir.c +++ b/fs/vboxsf/dir.c @@ -298,9 +298,9 @@ static int vboxsf_dir_create(struct inode parent, struct dentry dentry, static int vboxsf_dir_mkfile(struct mnt_idmap idmap, struct inode parent, struct dentry dentry, - umode_t mode, bool excl) + umode_t mode) { - return vboxsf_dir_create(parent, dentry, mode, false, excl, NULL); + return vboxsf_dir_create(parent, dentry, mode, false, true, NULL); } static struct dentry vboxsf_dir_mkdir(struct mnt_idmap idmap, diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index 6339f4956ecb39..e48f9e5a1b8a18 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -293,8 +293,7 @@ xfs_vn_create( struct mnt_idmap idmap, struct inode dir, struct dentry dentry, - umode_t mode, - bool flags) + umode_t mode) { return xfs_generic_create(idmap, dir, dentry, mode, 0, NULL); } @@ -338,7 +337,7 @@ STATIC struct dentry xfs_vn_ci_lookup( struct inode dir, struct dentry dentry, - unsigned int flags) + unsigned int flags) { struct xfs_inode ip; struct xfs_name xname; diff --git a/include/linux/fs.h b/include/linux/fs.h index d10897b3a1e350..1b7c40b2fa6de3 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2002,7 +2002,7 @@ struct inode_operations { int (readlink) (struct dentry , char __user ,int); int (create) (struct mnt_idmap , struct inode ,struct dentry , - umode_t, bool); + umode_t); int (link) (struct dentry ,struct inode ,struct dentry ); int (unlink) (struct inode ,struct dentry ); int (symlink) (struct mnt_idmap , struct inode ,struct dentry , diff --git a/ipc/mqueue.c b/ipc/mqueue.c index 4798b375972bf4..2dddb97f2f8a55 100644 --- a/ipc/mqueue.c +++ b/ipc/mqueue.c @@ -608,7 +608,7 @@ static int mqueue_create_attr(struct dentry dentry, umode_t mode, void arg) } static int mqueue_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { return mqueue_create_attr(dentry, mode, NULL); } diff --git a/mm/shmem.c b/mm/shmem.c index b51f83c970bb37..5789a0f5a3463b 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -3864,7 +3864,7 @@ static struct dentry shmem_mkdir(struct mnt_idmap idmap, struct inode dir, } static int shmem_create(struct mnt_idmap idmap, struct inode dir, - struct dentry dentry, umode_t mode, bool excl) + struct dentry dentry, umode_t mode) { return shmem_mknod(idmap, dir, dentry, mode \| S_IFREG, 0); }
3/2	2026/07/01 18:38	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 13760 output: 29 thoughts: 1202 Thoughts: Analyzing the VFS API Change for `create` Inode Operation Okay, so I'm looking at a patch that fundamentally alters the `create` inode operation in the VFS layer. Specifically, the `excl` argument, which indicates whether the file must be created exclusively, is being removed from the function signature. This change ripples through the filesystem implementations, affecting how they handle file creation. The changes include updates to the documentation (`Documentation/filesystems/porting.rst`), the header file (`include/linux/fs.h`), and a multitude of filesystem-specific implementations (like `9p`, `ext4`, `btrfs`, etc.). The core of the change lies in `fs/namei.c`, where `vfs_create` and `lookup_open` call the `create` function. Before, `lookup_open` would pass the `O_EXCL` flag via the `excl` argument. Now, that argument is gone. The commit message clarifies that the `create` function must assume exclusivity by default. If a filesystem needs to handle non-exclusive creates, the suggestion is to implement `atomic_open`. This is a structural API change, removing an argument from the function signature. It's not introducing any new fundamental functionality, but rather shifting the responsibility for exclusive creation. The logic of the filesystems themselves appears mostly unchanged, they're simply adapting to the new signature. The important bit is that the VFS now handles the exclusivity check; before, it was partially delegated. It does look like some filesystems are hardcoding the exclusive create behavior, for example, `gfs2` now explicitly sets `excl = 1` in its call to `gfs2_create_inode`. The same pattern applies to `nfs` and `vboxsf`. This is where the potential for interesting behavior emerges: filesystems previously relying on the `excl` argument to know if it was an exclusive create now always behave as if the file needs to be created exclusively. This might create regressions. My initial thought is that this is a refactoring, but a very wide one. Is it worth specialized fuzzing? Probably not a new set of fuzzers, but VFS changes are always under scrutiny. We're not adding new functionality, but we're changing the behavior of how `lookup_open` interacts with the underlying filesystems. This change could affect filesystems that don't implement `atomic_open` and had been relying on the `excl` argument to control whether to create exclusively or not. This is something worth a closer look: Are we breaking compatibility? Is there a subtle semantic difference here? I need to confirm if those filesystems, like `gfs2`, actually do implement `atomic_open` because if they do, then this entire shift is largely transparent. If they don't, then this is significant, and we need to look for regressions. Let me check if `gfs2` has implemented `atomic_open`.
4/2	2026/07/01 18:38	tool	grepper	0m Args: { "Expression": "atomic_open", "PathPrefix": "fs/gfs2/" } Results: { "Output": "fs/gfs2/file.c=591=static int gfs2_mmap(struct file file, struct vm_area_struct vma)\n--\nfs/gfs2/file.c-613-/*\nfs/gfs2/file.c:614: gfs2_open_common - This is common to open and atomic_open\nfs/gfs2/file.c-615- * @inode: The inode being opened\n--\nfs/gfs2/file.c=626=int gfs2_open_common(struct inode inode, struct file file)\n--\nfs/gfs2/file.c-665- \nfs/gfs2/file.c:666: After atomic_open, this function is only used for opening files\nfs/gfs2/file.c-667- * which are already cached. We must still get the glock for regular\n--\nfs/gfs2/inode.c=1367=static int gfs2_mknod(struct mnt_idmap idmap, struct inode dir,\n--\nfs/gfs2/inode.c-1373-/*\nfs/gfs2/inode.c:1374: gfs2_atomic_open - Atomically open a file\nfs/gfs2/inode.c-1375- * @dir: The directory\n--\nfs/gfs2/inode.c-1383-\nfs/gfs2/inode.c:1384:static int gfs2_atomic_open(struct inode dir, struct dentry dentry,\nfs/gfs2/inode.c-1385-\t\t\t struct file *file, unsigned flags,\n--\nfs/gfs2/inode.c=2308=static const struct inode_operations gfs2_dir_iops = {\n--\nfs/gfs2/inode.c-2325-\t.update_time = gfs2_update_time,\nfs/gfs2/inode.c:2326:\t.atomic_open = gfs2_atomic_open,\nfs/gfs2/inode.c-2327-\t.fileattr_get = gfs2_fileattr_get,\n" }
5/2	2026/07/01 18:38	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 16204 output: 28 thoughts: 21 Thoughts: Okay, here's my take on those thoughts, framed as an expert's internal monologue: File System Atomic Opens: A Quick Mental Check Right, gfs2 has `atomic_open` implemented, that's clear. No surprises there; it's designed for that kind of robust, clustered environment. But now I'm shifting gears, and a new question pops up: What about NFS? I need to quickly recall the NFS protocol and see if it provides any inherent support or if it relies on underlying mechanisms for something like atomic opens. It's a key detail when considering distributed file system design, as I'm sure it'll impact how the system as a whole deals with file accesses. Does it defer to the underlying storage for atomicity? Or does the client-side interaction somehow handle this? I'll need to double-check the specs...
6/2	2026/07/01 18:38	tool	grepper	0m Args: { "Expression": "atomic_open", "PathPrefix": "fs/nfs/" } Results: { "Output": "fs/nfs/dir.c=2087=static int nfs_finish_open(struct nfs_open_context ctx,\n--\nfs/nfs/dir.c-2103-\nfs/nfs/dir.c:2104:int nfs_atomic_open(struct inode dir, struct dentry dentry,\nfs/nfs/dir.c-2105-\t\t struct file file, unsigned open_flags,\n--\nfs/nfs/dir.c-2120-\nfs/nfs/dir.c:2121:\tdfprintk(VFS, \"NFS: atomic_open(%s/%llu), %pd\\n\",\nfs/nfs/dir.c-2122-\t\t\tdir-\u003ei_sb-\u003es_id, dir-\u003ei_ino, dentry);\n--\nfs/nfs/dir.c-2174-\nfs/nfs/dir.c:2175:\ttrace_nfs_atomic_open_enter(dir, ctx, open_flags);\nfs/nfs/dir.c-2176-\tinode = NFS_PROTO(dir)-\u003eopen_context(dir, ctx, open_flags, \u0026attr, \u0026created);\n--\nfs/nfs/dir.c-2180-\t\terr = PTR_ERR(inode);\nfs/nfs/dir.c:2181:\t\ttrace_nfs_atomic_open_exit(dir, ctx, open_flags, err);\nfs/nfs/dir.c-2182-\t\tput_nfs_open_context(ctx);\n--\nfs/nfs/dir.c-2212-\terr = nfs_finish_open(ctx, ctx-\u003edentry, file, open_flags);\nfs/nfs/dir.c:2213:\ttrace_nfs_atomic_open_exit(dir, ctx, open_flags, err);\nfs/nfs/dir.c-2214-\tput_nfs_open_context(ctx);\n--\nfs/nfs/dir.c-2250-}\nfs/nfs/dir.c:2251:EXPORT_SYMBOL_GPL(nfs_atomic_open);\nfs/nfs/dir.c-2252-\n--\nfs/nfs/dir.c=2254=nfs4_lookup_revalidate(struct inode dir, const struct qstr name,\n--\nfs/nfs/dir.c-2305-\nfs/nfs/dir.c:2306:int nfs_atomic_open_v23(struct inode dir, struct dentry dentry,\nfs/nfs/dir.c-2307-\t\t\tstruct file file, unsigned int open_flags,\n--\nfs/nfs/dir.c-2336-}\nfs/nfs/dir.c:2337:EXPORT_SYMBOL_GPL(nfs_atomic_open_v23);\nfs/nfs/dir.c-2338-\n--\nfs/nfs/nfs3proc.c=1042=static const struct inode_operations nfs3_dir_inode_operations = {\nfs/nfs/nfs3proc.c-1043-\t.create\t\t= nfs_create,\nfs/nfs/nfs3proc.c:1044:\t.atomic_open\t= nfs_atomic_open_v23,\nfs/nfs/nfs3proc.c-1045-\t.lookup\t\t= nfs_lookup,\n--\nfs/nfs/nfs4_fs.h=282=extern const struct dentry_operations nfs4_dentry_operations;\n--\nfs/nfs/nfs4_fs.h-284-/ dir.c /\nfs/nfs/nfs4_fs.h:285:int nfs_atomic_open(struct inode , struct dentry , struct file ,\nfs/nfs/nfs4_fs.h-286-\t\t unsigned, umode_t);\n--\nfs/nfs/nfs4proc.c=1261=struct nfs4_open_createattrs {\n--\nfs/nfs/nfs4proc.c-1266-\nfs/nfs/nfs4proc.c:1267:static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server server,\nfs/nfs/nfs4proc.c-1268-\t\tint err, struct nfs4_exception exception)\n--\nfs/nfs/nfs4proc.c=1309=static u32\nfs/nfs/nfs4proc.c:1310:nfs4_map_atomic_open_share(struct nfs_server server,\nfs/nfs/nfs4proc.c-1311-\t\tfmode_t fmode, int openflags)\n--\nfs/nfs/nfs4proc.c=1331=static enum open_claim_type4\nfs/nfs/nfs4proc.c:1332:nfs4_map_atomic_open_claim(struct nfs_server server,\nfs/nfs/nfs4proc.c-1333-\t\tenum open_claim_type4 claim)\n--\nfs/nfs/nfs4proc.c=1360=static struct nfs4_opendata nfs4_opendata_alloc(struct dentry dentry,\n--\nfs/nfs/nfs4proc.c-1395-\tp-\u003eo_arg.fmode = fmode \u0026 (FMODE_READ\|FMODE_WRITE);\nfs/nfs/nfs4proc.c:1396:\tp-\u003eo_arg.claim = nfs4_map_atomic_open_claim(server, claim);\nfs/nfs/nfs4proc.c:1397:\tp-\u003eo_arg.share_access = nfs4_map_atomic_open_share(server,\nfs/nfs/nfs4proc.c-1398-\t\t\tfmode, flags);\n--\nfs/nfs/nfs4proc.c=2166=static int nfs4_open_recover_helper(struct nfs4_opendata opendata,\n--\nfs/nfs/nfs4proc.c-2177-\topendata-\u003eo_arg.share_access =\nfs/nfs/nfs4proc.c:2178:\t\tnfs4_map_atomic_open_share(server, fmode, openflags);\nfs/nfs/nfs4proc.c-2179-\tmemset(\u0026opendata-\u003eo_res, 0, sizeof(opendata-\u003eo_res));\n--\nfs/nfs/nfs4proc.c=2261=static int nfs4_do_open_reclaim(struct nfs_open_context ctx, struct nfs4_state state)\n--\nfs/nfs/nfs4proc.c-2268-\t\ttrace_nfs4_open_reclaim(ctx, 0, err);\nfs/nfs/nfs4proc.c:2269:\t\tif (nfs4_clear_cap_atomic_open_v1(server, err, \u0026exception))\nfs/nfs/nfs4proc.c-2270-\t\t\tcontinue;\n--\nfs/nfs/nfs4proc.c=2786=static int nfs4_do_open_expired(struct nfs_open_context ctx, struct nfs4_state state)\n--\nfs/nfs/nfs4proc.c-2794-\t\ttrace_nfs4_open_expired(ctx, 0, err);\nfs/nfs/nfs4proc.c:2795:\t\tif (nfs4_clear_cap_atomic_open_v1(server, err, \u0026exception))\nfs/nfs/nfs4proc.c-2796-\t\t\tcontinue;\n--\nfs/nfs/nfs4proc.c=3234=static struct nfs4_state nfs4_do_open(struct inode dir,\n--\nfs/nfs/nfs4proc.c-3299-\t\t}\nfs/nfs/nfs4proc.c:3300:\t\tif (nfs4_clear_cap_atomic_open_v1(server, status, \u0026exception))\nfs/nfs/nfs4proc.c-3301-\t\t\tcontinue;\n--\nfs/nfs/nfs4proc.c=3826=static struct inode \nfs/nfs/nfs4proc.c:3827:nfs4_atomic_open(struct inode dir, struct nfs_open_context ctx,\nfs/nfs/nfs4proc.c-3828-\t\tint open_flags, struct iattr attr, int opened)\n--\nfs/nfs/nfs4proc.c=10635=static const struct inode_operations nfs4_dir_inode_operations = {\n--\nfs/nfs/nfs4proc.c-10637-\t.lookup\t\t= nfs_lookup,\nfs/nfs/nfs4proc.c:10638:\t.atomic_open\t= nfs_atomic_open,\nfs/nfs/nfs4proc.c-10639-\t.link\t\t= nfs_link,\n--\nfs/nfs/nfs4proc.c=10684=const struct nfs_rpc_ops nfs_v4_clientops = {\n--\nfs/nfs/nfs4proc.c-10728-\t.close_context = nfs4_close_context,\nfs/nfs/nfs4proc.c:10729:\t.open_context\t= nfs4_atomic_open,\nfs/nfs/nfs4proc.c-10730-\t.have_delegation = nfs4_have_delegation,\n--\nfs/nfs/nfstrace.h=514=DEFINE_NFS_LOOKUP_EVENT_DONE(nfs_readdir_lookup_revalidate);\nfs/nfs/nfstrace.h-515-\nfs/nfs/nfstrace.h:516:TRACE_EVENT(nfs_atomic_open_enter,\nfs/nfs/nfstrace.h-517-\t\tTP_PROTO(\n--\nfs/nfs/nfstrace.h-551-\nfs/nfs/nfstrace.h:552:TRACE_EVENT(nfs_atomic_open_exit,\nfs/nfs/nfstrace.h-553-\t\tTP_PROTO(\n--\nfs/nfs/proc.c=708=static const struct inode_operations nfs_dir_inode_operations = {\n--\nfs/nfs/proc.c-710-\t.lookup\t\t= nfs_lookup,\nfs/nfs/proc.c:711:\t.atomic_open\t= nfs_atomic_open_v23,\nfs/nfs/proc.c-712-\t.link\t\t= nfs_link,\n" }
7/2	2026/07/01 18:38	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 19203 output: 29 thoughts: 23 Thoughts: Okay, here's my summary, taking on the persona you've described: Considering Atomic Opens in Network Filesystems Hmm, so it seems `nfs` actually provides an implementation of `atomic_open`. That's interesting, and good to know. But, what about the virtualbox shared folder filesystem, `vboxsf`? I wonder if it also provides such a functionality? The implications of having atomic open operations, or not, are important for understanding file system consistency and potential race conditions in various applications, especially in a virtualized or networked context. This warrants further investigation, as its implementation or lack thereof can certainly impact the stability of applications relying on that particular FS.
8/2	2026/07/01 18:38	tool	grepper	0m Args: { "Expression": "atomic_open", "PathPrefix": "fs/vboxsf/" } Results: { "Output": "fs/vboxsf/dir.c=306=static struct dentry vboxsf_dir_mkdir(struct mnt_idmap idmap,\n--\nfs/vboxsf/dir.c-312-\nfs/vboxsf/dir.c:313:static int vboxsf_dir_atomic_open(struct inode parent, struct dentry dentry,\nfs/vboxsf/dir.c-314-\t\t\t\t struct file *file, unsigned int flags, umode_t mode)\n--\nfs/vboxsf/dir.c=469=const struct inode_operations vboxsf_dir_iops = {\n--\nfs/vboxsf/dir.c-472-\t.mkdir = vboxsf_dir_mkdir,\nfs/vboxsf/dir.c:473:\t.atomic_open = vboxsf_dir_atomic_open,\nfs/vboxsf/dir.c-474-\t.rmdir = vboxsf_dir_unlink,\n" }
9/2	2026/07/01 18:38	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 19654 output: 30 thoughts: 22 Thoughts: Okay, here's my take on those thoughts, tailored for an expert audience: Investigating Atomic Open Implementations in Network Filesystems Hmm, so `vboxsf` is actually implementing `atomic_open` now, which is interesting. It's good to see this functionality being addressed, and I'm curious about the specific implementation details, of course. My immediate question is, how does this compare to other virtual filesystem types? Is the implementation robust and performant? But what about `cifs`? That's the big one. I wonder if the `cifs` filesystem has addressed this? This is critical for ensuring data integrity during writes in networked environments. I need to dig into the `cifs` code to see if they are doing it, and also figure out how well `cifs` deals with various file system operations in a manner that's transactional.
10/2	2026/07/01 18:38	tool	grepper	0m Args: { "Expression": "atomic_open", "PathPrefix": "fs/smb/client/" } Results: { "Output": "fs/smb/client/cifsfs.c=1228=const struct inode_operations cifs_dir_inode_ops = {\nfs/smb/client/cifsfs.c-1229-\t.create = cifs_create,\nfs/smb/client/cifsfs.c:1230:\t.atomic_open = cifs_atomic_open,\nfs/smb/client/cifsfs.c-1231-\t.tmpfile = cifs_tmpfile,\n--\nfs/smb/client/cifsfs.h=56=int cifs_create(struct mnt_idmap idmap, struct inode dir,\nfs/smb/client/cifsfs.h-57-\t\tstruct dentry direntry, umode_t mode);\nfs/smb/client/cifsfs.h:58:int cifs_atomic_open(struct inode dir, struct dentry direntry,\nfs/smb/client/cifsfs.h-59-\t\t struct file file, unsigned int oflags, umode_t mode);\n--\nfs/smb/client/dir.c=489=static int cifs_do_create(struct inode dir, struct dentry direntry,\n--\nfs/smb/client/dir.c-519- /\nfs/smb/client/dir.c:520:int cifs_atomic_open(struct inode dir, struct dentry direntry,\nfs/smb/client/dir.c-521-\t\t struct file file, unsigned int oflags, umode_t mode)\n--\nfs/smb/client/dir.c-546-\t * to be a dir. For file opens, we wait to call posix open till\nfs/smb/client/dir.c:547:\t * cifs_open. It could be added to atomic_open in the future but the\nfs/smb/client/dir.c-548-\t * performance tradeoff of the extra network request when EISDIR or\n" }
11/2	2026/07/01 18:38	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 20411 output: 28 thoughts: 21 Thoughts: Here's my summary, as though I'm thinking these thoughts: File System Internals: Atomic Opens and the 9P Protocol Okay, so I'm looking at how different file systems handle atomic open operations. I know `cifs` actually has a pretty good implementation of `atomic_open`. But that gets me thinking... what about `9p`? I need to quickly recall if its architecture naturally lends itself to atomic opens, or if it requires a more deliberate approach. I should check the specification and implementations for `9p` to understand the current state and see if it can be easily improved. This will determine how it functions in its interaction with the kernel.
12/2	2026/07/01 18:38	tool	grepper	0m Args: { "Expression": "atomic_open", "PathPrefix": "fs/9p/" } Results: { "Output": "fs/9p/vfs_inode.c=579=v9fs_create(struct v9fs_session_info v9ses, struct inode dir,\n--\nfs/9p/vfs_inode.c-648- \nfs/9p/vfs_inode.c:649: open(.., O_CREAT) is handled in v9fs_vfs_atomic_open(). This is only called\nfs/9p/vfs_inode.c-650- * for mknod(2).\n--\nfs/9p/vfs_inode.c=767=static int\nfs/9p/vfs_inode.c:768:v9fs_vfs_atomic_open(struct inode dir, struct dentry dentry,\nfs/9p/vfs_inode.c-769-\t\t struct file file, unsigned int flags, umode_t mode)\n--\nfs/9p/vfs_inode.c=1365=static const struct inode_operations v9fs_dir_inode_operations_dotu = {\n--\nfs/9p/vfs_inode.c-1367-\t.lookup = v9fs_vfs_lookup,\nfs/9p/vfs_inode.c:1368:\t.atomic_open = v9fs_vfs_atomic_open,\nfs/9p/vfs_inode.c-1369-\t.symlink = v9fs_vfs_symlink,\n--\nfs/9p/vfs_inode.c=1380=static const struct inode_operations v9fs_dir_inode_operations = {\n--\nfs/9p/vfs_inode.c-1382-\t.lookup = v9fs_vfs_lookup,\nfs/9p/vfs_inode.c:1383:\t.atomic_open = v9fs_vfs_atomic_open,\nfs/9p/vfs_inode.c-1384-\t.unlink = v9fs_vfs_unlink,\n--\nfs/9p/vfs_inode_dotl.c=225=static int\nfs/9p/vfs_inode_dotl.c:226:v9fs_vfs_atomic_open_dotl(struct inode dir, struct dentry dentry,\nfs/9p/vfs_inode_dotl.c-227-\t\t\t struct file file, unsigned int flags, umode_t omode)\n--\nfs/9p/vfs_inode_dotl.c=962=const struct inode_operations v9fs_dir_inode_operations_dotl = {\nfs/9p/vfs_inode_dotl.c-963-\t.create = v9fs_vfs_create_dotl,\nfs/9p/vfs_inode_dotl.c:964:\t.atomic_open = v9fs_vfs_atomic_open_dotl,\nfs/9p/vfs_inode_dotl.c-965-\t.lookup = v9fs_vfs_lookup,\n" }
13/2	2026/07/01 18:38	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 21377 output: 27 thoughts: 21 Thoughts: Okay, here's my interpretation of those thoughts, tailored for an expert audience, presented in the first person: Initial Assessment: Atomic Open and FUSE Compatibility Alright, so the `9p` file system implements `atomic_open`, which is good to see. But that got me thinking, what's the story with `fuse`? Is this capability mirrored in `fuse`'s implementation, or are there significant differences in how those two handle this critical operation? Are there any performance benefits on one vs the other? I wonder how they deal with concurrency, or if one is inherently a better choice when dealing with race conditions. I need to dive deeper on how they're handling atomicity.
14/2	2026/07/01 18:38	tool	grepper	0m Args: { "Expression": "atomic_open", "PathPrefix": "fs/fuse/" } Results: { "Output": "fs/fuse/dir.c=928=static int fuse_mknod(struct mnt_idmap , struct inode , struct dentry ,\nfs/fuse/dir.c-929-\t\t umode_t, dev_t);\nfs/fuse/dir.c:930:static int fuse_atomic_open(struct inode dir, struct dentry entry,\nfs/fuse/dir.c-931-\t\t\t struct file file, unsigned flags,\n--\nfs/fuse/dir.c=2396=static const struct inode_operations fuse_dir_inode_operations = {\n--\nfs/fuse/dir.c-2405-\t.create\t\t= fuse_create,\nfs/fuse/dir.c:2406:\t.atomic_open\t= fuse_atomic_open,\nfs/fuse/dir.c-2407-\t.tmpfile\t= fuse_tmpfile,\n" }
15/2	2026/07/01 18:38	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 21807 output: 28 thoughts: 21 Thoughts: Okay, here's my take on those thoughts, framed as an expert's internal monologue: Investigating Atomic Open Implementations Right, so `fuse` includes an `atomic_open` implementation. That's good to know, and it's something I need to keep in mind when comparing different file systems. The implications here are significant for data consistency and how we handle concurrent access. Now, the key question is, what about `orangefs`? Does it offer a similar mechanism for atomic opens? I need to dig into its architecture and documentation to understand how it handles file creation and modification with respect to atomicity. That's a crucial aspect for its overall reliability and performance characteristics, especially in a distributed environment. I'll need to check the codebase and the documentation to check if this is supported, and if so, how it is implemented. Is it leveraging kernel support, userspace tricks, or something else entirely? The nuances of its approach will influence my assessment.
16/2	2026/07/01 18:38	tool	grepper	0m Error: no matches Args: { "Expression": "atomic_open", "PathPrefix": "fs/orangefs/" } Results: { "error": "no matches" }
17/2	2026/07/01 18:38	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 22075 output: 29 thoughts: 24 Thoughts: Here's a summary of my thought process, as requested: Digging into OrangeFS's Atomicity Okay, so I'm trying to figure out how `orangefs` handles opening files atomically, and I'm pretty sure it doesn't have an `atomic_open` call implemented directly. That's a common characteristic for distributed file systems, especially when considering consistency models and performance tradeoffs. Now, rather than just assume, I need to verify how it actually handles the create operation. Let me shift my focus. I'll need to go look into the `orangefs_create` function. I'll bet that's where the atomic aspects, or lack thereof, are handled. This should offer clues to understand how it deals with the partial writes and potential conflicts.
18/2	2026/07/01 18:38	tool	grepper	0m Args: { "Expression": "orangefs_create", "PathPrefix": "fs/orangefs/" } Results: { "Output": "fs/orangefs/downcall.h=23=struct orangefs_lookup_response {\n--\nfs/orangefs/downcall.h-26-\nfs/orangefs/downcall.h:27:struct orangefs_create_response {\nfs/orangefs/downcall.h-28-\tstruct orangefs_object_kref refn;\n--\nfs/orangefs/downcall.h=100=struct orangefs_downcall_s {\n--\nfs/orangefs/downcall.h-109-\t\tstruct orangefs_lookup_response lookup;\nfs/orangefs/downcall.h:110:\t\tstruct orangefs_create_response create;\nfs/orangefs/downcall.h-111-\t\tstruct orangefs_symlink_response sym;\n--\nfs/orangefs/namei.c-17- /\nfs/orangefs/namei.c:18:static int orangefs_create(struct mnt_idmap idmap,\nfs/orangefs/namei.c-19-\t\t\tstruct inode *dir,\n--\nfs/orangefs/namei.c=416=const struct inode_operations orangefs_dir_inode_operations = {\n--\nfs/orangefs/namei.c-419-\t.set_acl = orangefs_set_acl,\nfs/orangefs/namei.c:420:\t.create = orangefs_create,\nfs/orangefs/namei.c-421-\t.unlink = orangefs_unlink,\n--\nfs/orangefs/upcall.h=27=struct orangefs_lookup_request_s {\n--\nfs/orangefs/upcall.h-33-\nfs/orangefs/upcall.h:34:struct orangefs_create_request_s {\nfs/orangefs/upcall.h-35-\tstruct orangefs_object_kref parent_refn;\n--\nfs/orangefs/upcall.h=220=struct orangefs_upcall_s {\n--\nfs/orangefs/upcall.h-232-\t\tstruct orangefs_lookup_request_s lookup;\nfs/orangefs/upcall.h:233:\t\tstruct orangefs_create_request_s create;\nfs/orangefs/upcall.h-234-\t\tstruct orangefs_symlink_request_s sym;\n" }
19/2	2026/07/01 18:38	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 22880 output: 36 thoughts: 10 Thoughts: Okay, here's my interpretation of that thought process, tailored for an expert audience, and written in the first person: Initial Examination of `orangefs_create` Alright, let's dive into this `orangefs_create` function. I'm immediately curious about its role within the OrangeFS file system. My initial thoughts are: what's the typical implementation? How does it handle inode allocation and metadata updates? Is it a single-function call or a wrapper for several actions? I'm anticipating interactions with the underlying storage and network layers – probably some RPC calls to metadata servers, potentially data server interactions depending on the file size, and definitely some locking mechanisms involved. I'll need to look for any optimizations – deferred updates, caching strategies, or perhaps a two-phase commit approach for atomicity. I’m thinking error handling and recovery are paramount; it's a critical point in file system operation. I'll be looking for any signs of potential bottlenecks or race conditions. This should be interesting.
20/2	2026/07/01 18:39	tool	read-file	0m Args: { "File": "fs/orangefs/namei.c", "FirstLine": 18, "LineCount": 50 } Results: { "Contents": " 18:\tstatic int orangefs_create(struct mnt_idmap idmap,\n 19:\t\t\t\tstruct inode dir,\n 20:\t\t\t\tstruct dentry dentry,\n 21:\t\t\t\tumode_t mode)\n 22:\t{\n 23:\t\tstruct orangefs_inode_s parent = ORANGEFS_I(dir);\n 24:\t\tstruct orangefs_kernel_op_s new_op;\n 25:\t\tstruct orangefs_object_kref ref;\n 26:\t\tstruct inode inode;\n 27:\t\tstruct iattr iattr;\n 28:\t\tint ret;\n 29:\t\n 30:\t\tgossip_debug(GOSSIP_NAME_DEBUG, \"%s: %pd\\n\",\n 31:\t\t\t __func__,\n 32:\t\t\t dentry);\n 33:\t\n 34:\t\tnew_op = op_alloc(ORANGEFS_VFS_OP_CREATE);\n 35:\t\tif (!new_op)\n 36:\t\t\treturn -ENOMEM;\n 37:\t\n 38:\t\tnew_op-\u003eupcall.req.create.parent_refn = parent-\u003erefn;\n 39:\t\n 40:\t\tfill_default_sys_attrs(new_op-\u003eupcall.req.create.attributes, mode);\n 41:\t\n 42:\t\tstrscpy(new_op-\u003eupcall.req.create.d_name, dentry-\u003ed_name.name);\n 43:\t\n 44:\t\tret = service_operation(new_op, __func__, get_interruptible_flag(dir));\n 45:\t\n 46:\t\tgossip_debug(GOSSIP_NAME_DEBUG,\n 47:\t\t\t \"%s: %pd: handle:%pU: fsid:%d: new_op:%p: ret:%d:\\n\",\n 48:\t\t\t __func__,\n 49:\t\t\t dentry,\n 50:\t\t\t \u0026new_op-\u003edowncall.resp.create.refn.khandle,\n 51:\t\t\t new_op-\u003edowncall.resp.create.refn.fs_id,\n 52:\t\t\t new_op,\n 53:\t\t\t ret);\n 54:\t\n 55:\t\tif (ret \u003c 0)\n 56:\t\t\tgoto out;\n 57:\t\n 58:\t\tref = new_op-\u003edowncall.resp.create.refn;\n 59:\t\n 60:\t\tinode = orangefs_new_inode(dir-\u003ei_sb, dir, S_IFREG \| mode, 0, \u0026ref);\n 61:\t\tif (IS_ERR(inode)) {\n 62:\t\t\tgossip_err(\"%s: Failed to allocate inode for file :%pd:\\n\",\n 63:\t\t\t\t __func__,\n 64:\t\t\t\t dentry);\n 65:\t\t\tret = PTR_ERR(inode);\n 66:\t\t\tgoto out;\n 67:\t\t}\n" }
21/2	2026/07/01 18:39	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 23899 output: 30 thoughts: 22 Thoughts: Here's my attempt at summarizing the thought process, tailored for an expert audience: Analyzing the `orangefs_create` Implementation Okay, so I'm looking at this patch and I'm immediately trying to get a handle on the changes to `orangefs_create`. The crucial question I need to answer is whether the previous implementation actually utilized the `bool exclusive` argument. That argument is key, because it suggests the function might have been able to create files with specific exclusivity guarantees, and I need to determine if the older version used this feature or not. If it didn't, the patch might introduce a performance trade-off to add a feature which was not previously present. I need to dig into the old code and verify its behaviour.
22/2	2026/07/01 18:39	tool	grepper	0m Error: no matches Args: { "Expression": "exclusive", "PathPrefix": "fs/orangefs/namei.c" } Results: { "error": "no matches" }
23/2	2026/07/01 18:39	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 24125 output: 38 thoughts: 20 Thoughts: Okay, here's my interpretation of those thoughts, tailored for an expert audience, presented in the first person: Navigating the OCFS2 API Hmm, no, I don't think that code path utilized the expected function for file creation. I need to re-examine the context. The problem lies elsewhere. Okay, let's step back, and quickly retrace my mental steps. The more fundamental question is, what about `ocfs2_create`? It's the standard OCFS2 file creation routine. I need to consider, from first principles, where that routine would have been called (or not called!) within the kernel module. What are the calling conventions? Is this related to inode creation, directory entry creation, or perhaps some specific OCFS2-specific metadata update? The issue with my prior assumption is that I could have missed a relevant part, perhaps the logic around the call.
24/2	2026/07/01 18:39	tool	read-file	0m Args: { "File": "fs/ocfs2/namei.c", "FirstLine": 667, "LineCount": 50 } Results: { "Contents": " 667:\tstatic int ocfs2_create(struct mnt_idmap idmap,\n 668:\t\t\t\tstruct inode dir,\n 669:\t\t\t\tstruct dentry dentry,\n 670:\t\t\t\tumode_t mode)\n 671:\t{\n 672:\t\tint ret;\n 673:\t\n 674:\t\ttrace_ocfs2_create(dir, dentry, dentry-\u003ed_name.len, dentry-\u003ed_name.name,\n 675:\t\t\t\t (unsigned long long)OCFS2_I(dir)-\u003eip_blkno, mode);\n 676:\t\tret = ocfs2_mknod(\u0026nop_mnt_idmap, dir, dentry, mode \| S_IFREG, 0);\n 677:\t\tif (ret)\n 678:\t\t\tmlog_errno(ret);\n 679:\t\n 680:\t\treturn ret;\n 681:\t}\n 682:\t\n 683:\tstatic int ocfs2_link(struct dentry old_dentry,\n 684:\t\t\t struct inode dir,\n 685:\t\t\t struct dentry dentry)\n 686:\t{\n 687:\t\thandle_t handle;\n 688:\t\tstruct inode inode = d_inode(old_dentry);\n 689:\t\tstruct inode old_dir = d_inode(old_dentry-\u003ed_parent);\n 690:\t\tint err;\n 691:\t\tstruct buffer_head fe_bh = NULL;\n 692:\t\tstruct buffer_head old_dir_bh = NULL;\n 693:\t\tstruct buffer_head parent_fe_bh = NULL;\n 694:\t\tstruct ocfs2_dinode fe = NULL;\n 695:\t\tstruct ocfs2_super osb = OCFS2_SB(dir-\u003ei_sb);\n 696:\t\tstruct ocfs2_dir_lookup_result lookup = { NULL, };\n 697:\t\tsigset_t oldset;\n 698:\t\tu64 old_de_ino;\n 699:\t\n 700:\t\ttrace_ocfs2_link((unsigned long long)OCFS2_I(inode)-\u003eip_blkno,\n 701:\t\t\t\t old_dentry-\u003ed_name.len, old_dentry-\u003ed_name.name,\n 702:\t\t\t\t dentry-\u003ed_name.len, dentry-\u003ed_name.name);\n 703:\t\n 704:\t\tif (S_ISDIR(inode-\u003ei_mode))\n 705:\t\t\treturn -EPERM;\n 706:\t\n 707:\t\terr = dquot_initialize(dir);\n 708:\t\tif (err) {\n 709:\t\t\tmlog_errno(err);\n 710:\t\t\treturn err;\n 711:\t\t}\n 712:\t\n 713:\t\terr = ocfs2_double_lock(osb, \u0026old_dir_bh, old_dir,\n 714:\t\t\t\t\u0026parent_fe_bh, dir, 0);\n 715:\t\tif (err \u003c 0) {\n 716:\t\t\tif (err != -ENOENT)\n" }
25/2	2026/07/01 18:39	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 25220 output: 33 thoughts: 767 Thoughts: Analyzing the Removal of the `excl` Argument from `create` Okay, so I'm looking at this patch that removes the `excl` argument from the `create` inode operation. My initial thought was that `ocfs2_create` didn't use `excl` either, so I need to go deeper. I'm checking `fs/namei.c` again, and specifically `lookup_open`. It's pretty clear that `lookup_open` is involved when opening a file. If `O_CREAT` is set, the code calls `atomic_open` if the filesystem implements it. If not, it falls back to `create`. Now, before this patch, the code passed `open_flag & O_EXCL` to `create`. But now it doesn't. My immediate question: if the filesystem doesn't implement `atomic_open`, does that mean it doesn't support exclusive create? No, I quickly realized that `create` was used for both exclusive and non-exclusive create when `atomic_open` wasn't provided. The commit message clarifies: the `.create` inode operation no longer receives `excl`. It always assumes the file doesn't exist. If the filesystem needs to be involved in a non-exclusive create, it should implement `atomic_open`. Here's the problem: if a filesystem doesn't provide `atomic_open`, VFS handles non-exclusive create by first doing a lookup, and if it's not found, then calling `create`. But there's a race condition there: between the lookup and the `create` call, someone else could create the file. So, if `create` assumes the file does not exist, it will just create it, and it could overwrite an existing file. But wait, VFS handles `EEXIST` if `O_EXCL` is set. Okay, VFS already did a lookup and found a negative dentry (the file doesn't exist yet) before `create` is called. So, the filesystem's `create` operation should create the file. If another process created the file concurrently, the filesystem's `create` (which likely does an internal exclusive create, like `mknod`) will return `EEXIST`, and then VFS will handle that error. Now I need to see if any filesystem actually used the `excl` argument in `create` before this change. Let's look at `gfs2`, `nfs`, and `vboxsf` which I saw had internal changes. Checking `gfs2_create` confirms my suspicion: ```c - return gfs2_create_inode(dir, dentry, NULL, S_IFREG \| mode, 0, NULL, 0, excl); + return gfs2_create_inode(dir, dentry, NULL, S_IFREG \| mode, 0, NULL, 0, 1); ``` Okay, `gfs2_create_inode` does take `excl` as its last argument. Now I need to check what `gfs2_create_inode` does with the `excl` argument to understand the implications of this change.
26/2	2026/07/01 18:39	tool	grepper	0m Args: { "Expression": "gfs2_create_inode", "PathPrefix": "fs/gfs2/" } Results: { "Output": "fs/gfs2/inode.c=664=static int gfs2_initxattrs(struct inode inode, const struct xattr xattr_array,\n--\nfs/gfs2/inode.c-680-/*\nfs/gfs2/inode.c:681: gfs2_create_inode - Create a new inode\nfs/gfs2/inode.c-682- * @dir: The parent directory\n--\nfs/gfs2/inode.c-699-\nfs/gfs2/inode.c:700:static int gfs2_create_inode(struct inode dir, struct dentry dentry,\nfs/gfs2/inode.c-701-\t\t\t struct file file,\n--\nfs/gfs2/inode.c=971=static int gfs2_create(struct mnt_idmap idmap, struct inode dir,\n--\nfs/gfs2/inode.c-973-{\nfs/gfs2/inode.c:974:\treturn gfs2_create_inode(dir, dentry, NULL, S_IFREG \| mode, 0, NULL, 0, 1);\nfs/gfs2/inode.c-975-}\n--\nfs/gfs2/inode.c=1327=static int gfs2_symlink(struct mnt_idmap idmap, struct inode dir,\n--\nfs/gfs2/inode.c-1335-\nfs/gfs2/inode.c:1336:\treturn gfs2_create_inode(dir, dentry, NULL, S_IFLNK \| S_IRWXUGO, 0, symname, size, 0);\nfs/gfs2/inode.c-1337-}\n--\nfs/gfs2/inode.c=1349=static struct dentry gfs2_mkdir(struct mnt_idmap idmap, struct inode dir,\n--\nfs/gfs2/inode.c-1353-\nfs/gfs2/inode.c:1354:\treturn ERR_PTR(gfs2_create_inode(dir, dentry, NULL, S_IFDIR \| mode, 0, NULL, dsize, 0));\nfs/gfs2/inode.c-1355-}\n--\nfs/gfs2/inode.c=1367=static int gfs2_mknod(struct mnt_idmap idmap, struct inode dir,\n--\nfs/gfs2/inode.c-1369-{\nfs/gfs2/inode.c:1370:\treturn gfs2_create_inode(dir, dentry, NULL, mode, dev, NULL, 0, 0);\nfs/gfs2/inode.c-1371-}\n--\nfs/gfs2/inode.c=1384=static int gfs2_atomic_open(struct inode dir, struct dentry dentry,\n--\nfs/gfs2/inode.c-1403-\nfs/gfs2/inode.c:1404:\treturn gfs2_create_inode(dir, dentry, file, S_IFREG \| mode, 0, NULL, 0, excl);\nfs/gfs2/inode.c-1405-}\n--\nfs/gfs2/super.c=1289=static int evict_unlinked_inode(struct inode inode, struct gfs2_holder gh)\n--\nfs/gfs2/super.c-1318-\t/\nfs/gfs2/super.c:1319:\t As soon as we clear the bitmap for the dinode, gfs2_create_inode()\nfs/gfs2/super.c-1320-\t * can get called to recreate it, or even gfs2_inode_lookup() if the\n" }
27/2	2026/07/01 18:39	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 27694 output: 31 thoughts: 285 Thoughts: Analyzing the Impact of `gfs2_create_inode` and `atomic_open` Okay, so I'm looking at this `gfs2_atomic_open` function. It's calling `gfs2_create_inode`, which is interesting because that function is also central to how GFS2 creates inodes. I'm noting that `gfs2_atomic_open` passes the `excl` flag directly to `gfs2_create_inode`, and that the `excl` flag indicates exclusive access. I see that the old version of the `gfs2_create_inode` function was used by both, but the patch hardcodes the `excl` flag as true. Wait, that makes sense. The comment says that the `.create` inode operation no longer gets the `excl` argument and that it assumes the file doesn't already exist. The commit seems perfectly aligned with the patch. Since `gfs2_create` now only gets called for exclusive creates, hardcoding `excl=true` is the right thing to do, or when VFS handles the non-exclusive part. It's essentially simplifying the code path because `gfs2_create` now assumes that exclusivity is part of the calling context. Now, I'm thinking about the implications for NFS.
28/2	2026/07/01 18:39	tool	grepper	0m Args: { "Expression": "nfs_do_create", "PathPrefix": "fs/nfs/" } Results: { "Output": "fs/nfs/dir.c=57=static void nfs_readdir_clear_array(struct folio );\nfs/nfs/dir.c:58:static int nfs_do_create(struct inode dir, struct dentry dentry,\nfs/nfs/dir.c-59-\t\t\t umode_t mode, int open_flags);\n--\nfs/nfs/dir.c=2306=int nfs_atomic_open_v23(struct inode dir, struct dentry dentry,\n--\nfs/nfs/dir.c-2319-\tif (open_flags \u0026 O_CREAT) {\nfs/nfs/dir.c:2320:\t\terror = nfs_do_create(dir, dentry, mode, open_flags);\nfs/nfs/dir.c-2321-\t\tif (!error) {\n--\nfs/nfs/dir.c=2392=EXPORT_SYMBOL_GPL(nfs_instantiate);\n--\nfs/nfs/dir.c-2399- /\nfs/nfs/dir.c:2400:static int nfs_do_create(struct inode dir, struct dentry dentry,\nfs/nfs/dir.c-2401-\t\t\t umode_t mode, int open_flags)\n--\nfs/nfs/dir.c=2429=int nfs_create(struct mnt_idmap idmap, struct inode dir,\n--\nfs/nfs/dir.c-2431-{\nfs/nfs/dir.c:2432:\treturn nfs_do_create(dir, dentry, mode, O_EXCL);\nfs/nfs/dir.c-2433-}\n" }
29/2	2026/07/01 18:39	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 28738 output: 33 thoughts: 59 Thoughts: Okay, let me think this through. Analyzing NFS File Creation and `vboxsf` Implications Right, so `nfs_do_create` is definitely used in `nfs_atomic_open_v23`, and crucially, that function is passing through `open_flags`. That's important. It confirms my understanding that the use of `O_EXCL` within `nfs_create` is, in fact, correct, given that path. We're effectively reusing a lower-level function with added functionality. But, a thought, what about the interaction with `vboxsf`? I need to consider potential implications of this approach. Does `vboxsf` use a similar pattern? Does the combination of the different flag use cause any issues, or is it already handled? I really need to double check how this interacts in the context of `vboxsf`, as that is an area which has sometimes shown unexpected behaviour. That's the next step; need to dig deeper into the vboxsf code path.
30/2	2026/07/01 18:39	tool	grepper	0m Args: { "Expression": "vboxsf_dir_create", "PathPrefix": "fs/vboxsf/" } Results: { "Output": "fs/vboxsf/dir.c=236=static int vboxsf_dir_instantiate(struct inode parent, struct dentry dentry,\n--\nfs/vboxsf/dir.c-256-\nfs/vboxsf/dir.c:257:static int vboxsf_dir_create(struct inode parent, struct dentry dentry,\nfs/vboxsf/dir.c-258-\t\t\t umode_t mode, bool is_dir, bool excl, u64 handle_ret)\n--\nfs/vboxsf/dir.c=299=static int vboxsf_dir_mkfile(struct mnt_idmap idmap,\n--\nfs/vboxsf/dir.c-302-{\nfs/vboxsf/dir.c:303:\treturn vboxsf_dir_create(parent, dentry, mode, false, true, NULL);\nfs/vboxsf/dir.c-304-}\n--\nfs/vboxsf/dir.c=306=static struct dentry vboxsf_dir_mkdir(struct mnt_idmap idmap,\n--\nfs/vboxsf/dir.c-309-{\nfs/vboxsf/dir.c:310:\treturn ERR_PTR(vboxsf_dir_create(parent, dentry, mode, true, true, NULL));\nfs/vboxsf/dir.c-311-}\n--\nfs/vboxsf/dir.c=313=static int vboxsf_dir_atomic_open(struct inode parent, struct dentry dentry,\n--\nfs/vboxsf/dir.c-330-\nfs/vboxsf/dir.c:331:\terr = vboxsf_dir_create(parent, dentry, mode, false, flags \u0026 O_EXCL, \u0026handle);\nfs/vboxsf/dir.c-332-\tif (err)\n" }
31/2	2026/07/01 18:39	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 29531 output: 35 thoughts: 311 Thoughts: Analyzing the Implications of a Filesystem Refactor Okay, so it looks like `vboxsf_dir_create` is being used by `vboxsf_dir_atomic_open`, which is already handling `O_EXCL` flags. Also, the `vboxsf_dir_mkfile` (which is the actual `.create` operation) passes `true` for exclusive creation. So, the `.create` inode operation is now strictly for exclusive creates. It seems the VFS layer is taking responsibility for handling non-exclusive scenarios, and the filesystem code can just assume the file doesn't exist. This feels like a significant functional change, and the implication is that we should probably focus on fuzzing this. It's not a localized change; it’s a tree-wide refactoring that affects the behavior of `vfs_create` and `lookup_open` in how they call `create`. The changes are subtle, but they could have serious consequences. Wait a second… `vfs_create` used to pass `true` for exclusive creation (`excl`), and now it doesn't pass anything. The filesystem now implicitly assumes `true`. And `lookup_open` used to pass `open_flag & O_EXCL`. Now, it doesn't pass anything, and the filesystem still implicitly assumes `true`. Hold on... if `lookup_open` used to pass the bitwise AND of the `open_flag` and `O_EXCL`, and now it's not passing anything, and the filesystem always assumes `true`, then for non-exclusive creates (`O_CREAT` without `O_EXCL`), the filesystem's `create` method is now behaving as if `O_EXCL` was passed! That's a breaking change. Is that really what this means? Am I understanding this correctly? I better double-check `lookup_open` in `fs/namei.c` to be certain. Gotta make sure I'm not missing something here.
32/2	2026/07/01 18:39	tool	read-file	0m Args: { "File": "fs/namei.c", "FirstLine": 4480, "LineCount": 50 } Results: { "Contents": "4480:\t\tif (d_in_lookup(dentry)) {\n4481:\t\t\tstruct dentry res = dir_inode-\u003ei_op-\u003elookup(dir_inode, dentry,\n4482:\t\t\t\t\t\t\t\t nd-\u003eflags);\n4483:\t\t\td_lookup_done(dentry);\n4484:\t\t\tif (unlikely(res)) {\n4485:\t\t\t\tif (IS_ERR(res)) {\n4486:\t\t\t\t\terror = PTR_ERR(res);\n4487:\t\t\t\t\tgoto out_dput;\n4488:\t\t\t\t}\n4489:\t\t\t\tdput(dentry);\n4490:\t\t\t\tdentry = res;\n4491:\t\t\t}\n4492:\t\t}\n4493:\t\n4494:\t\t/ Negative dentry, just create the file /\n4495:\t\tif (!dentry-\u003ed_inode \u0026\u0026 (open_flag \u0026 O_CREAT)) {\n4496:\t\t\t/ but break the directory lease first! /\n4497:\t\t\terror = try_break_deleg(dir_inode, LEASE_BREAK_DIR_CREATE, delegated_inode);\n4498:\t\t\tif (error)\n4499:\t\t\t\tgoto out_dput;\n4500:\t\n4501:\t\t\tfile-\u003ef_mode \|= FMODE_CREATED;\n4502:\t\t\taudit_inode_child(dir_inode, dentry, AUDIT_TYPE_CHILD_CREATE);\n4503:\t\t\tif (!dir_inode-\u003ei_op-\u003ecreate) {\n4504:\t\t\t\terror = -EACCES;\n4505:\t\t\t\tgoto out_dput;\n4506:\t\t\t}\n4507:\t\n4508:\t\t\terror = dir_inode-\u003ei_op-\u003ecreate(idmap, dir_inode, dentry, mode);\n4509:\t\t\tif (error)\n4510:\t\t\t\tgoto out_dput;\n4511:\t\t}\n4512:\t\tif (unlikely(create_error) \u0026\u0026 !dentry-\u003ed_inode) {\n4513:\t\t\terror = create_error;\n4514:\t\t\tgoto out_dput;\n4515:\t\t}\n4516:\t\treturn dentry;\n4517:\t\n4518:\tout_dput:\n4519:\t\tdput(dentry);\n4520:\t\treturn ERR_PTR(error);\n4521:\t}\n4522:\t\n4523:\tstatic inline bool trailing_slashes(struct nameidata nd)\n4524:\t{\n4525:\t\treturn (bool)nd-\u003elast.name[nd-\u003elast.len];\n4526:\t}\n4527:\t\n4528:\tstatic struct dentry lookup_fast_for_open(struct nameidata nd, int open_flag)\n4529:\t{\n" }
33/2	2026/07/01 18:39	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 31058 output: 35 thoughts: 52 Thoughts: Okay, let me think this through. Analyzing the `lookup_open` Function Hmm, the code reminds me that `lookup_open` gets invoked when `O_CREAT` is set. Now that's a key detail to keep in mind. The interesting thing is, that if the filesystem has an `atomic_open` implementation, it should actually be called earlier within `lookup_open`. So, that seems like a good place to start my analysis. Let me just quickly trace back through `lookup_open`, and get my bearings on what's happening at the beginning of the function. I want to see how that early call would fit in there.
34/2	2026/07/01 18:39	tool	read-file	0m Args: { "File": "fs/namei.c", "FirstLine": 4400, "LineCount": 80 } Results: { "Contents": "4400:\t * hadn't been specified.\n4401:\t \n4402:\t An error code is returned on failure.\n4403:\t /\n4404:\tstatic struct dentry lookup_open(struct nameidata nd, struct file file,\n4405:\t\t\t\t\t const struct open_flags op,\n4406:\t\t\t\t\t bool got_write, struct delegated_inode delegated_inode)\n4407:\t{\n4408:\t\tstruct mnt_idmap idmap;\n4409:\t\tstruct dentry dir = nd-\u003epath.dentry;\n4410:\t\tstruct inode dir_inode = dir-\u003ed_inode;\n4411:\t\tint open_flag = op-\u003eopen_flag;\n4412:\t\tstruct dentry dentry;\n4413:\t\tint error, create_error = 0;\n4414:\t\tumode_t mode = op-\u003emode;\n4415:\t\n4416:\t\tif (unlikely(IS_DEADDIR(dir_inode)))\n4417:\t\t\treturn ERR_PTR(-ENOENT);\n4418:\t\n4419:\t\tfile-\u003ef_mode \u0026= ~FMODE_CREATED;\n4420:\t\tdentry = d_lookup(dir, \u0026nd-\u003elast);\n4421:\t\tfor (;;) {\n4422:\t\t\tif (!dentry) {\n4423:\t\t\t\tdentry = d_alloc_parallel(dir, \u0026nd-\u003elast);\n4424:\t\t\t\tif (IS_ERR(dentry))\n4425:\t\t\t\t\treturn dentry;\n4426:\t\t\t}\n4427:\t\t\tif (d_in_lookup(dentry))\n4428:\t\t\t\tbreak;\n4429:\t\n4430:\t\t\terror = d_revalidate(dir_inode, \u0026nd-\u003elast, dentry, nd-\u003eflags);\n4431:\t\t\tif (likely(error \u003e 0))\n4432:\t\t\t\tbreak;\n4433:\t\t\tif (error)\n4434:\t\t\t\tgoto out_dput;\n4435:\t\t\td_invalidate(dentry);\n4436:\t\t\tdput(dentry);\n4437:\t\t\tdentry = NULL;\n4438:\t\t}\n4439:\t\tif (dentry-\u003ed_inode) {\n4440:\t\t\t/* Cached positive dentry: will open in f_op-\u003eopen /\n4441:\t\t\treturn dentry;\n4442:\t\t}\n4443:\t\n4444:\t\tif (open_flag \u0026 O_CREAT)\n4445:\t\t\taudit_inode(nd-\u003ename, dir, AUDIT_INODE_PARENT);\n4446:\t\n4447:\t\t/\n4448:\t\t * Checking write permission is tricky, bacuse we don't know if we are\n4449:\t\t * going to actually need it: O_CREAT opens should work as long as the\n4450:\t\t * file exists. But checking existence breaks atomicity. The trick is\n4451:\t\t * to check access and if not granted clear O_CREAT from the flags.\n4452:\t\t \n4453:\t\t Another problem is returing the \"right\" error value (e.g. for an\n4454:\t\t * O_EXCL open we want to return EEXIST not EROFS).\n4455:\t\t */\n4456:\t\tif (unlikely(!got_write))\n4457:\t\t\topen_flag \u0026= ~O_TRUNC;\n4458:\t\tidmap = mnt_idmap(nd-\u003epath.mnt);\n4459:\t\tif (open_flag \u0026 O_CREAT) {\n4460:\t\t\tif (open_flag \u0026 O_EXCL)\n4461:\t\t\t\topen_flag \u0026= ~O_TRUNC;\n4462:\t\t\tmode = vfs_prepare_mode(idmap, dir-\u003ed_inode, mode, mode, mode);\n4463:\t\t\tif (likely(got_write))\n4464:\t\t\t\tcreate_error = may_o_create(idmap, \u0026nd-\u003epath,\n4465:\t\t\t\t\t\t\t dentry, mode);\n4466:\t\t\telse\n4467:\t\t\t\tcreate_error = -EROFS;\n4468:\t\t}\n4469:\t\tif (create_error)\n4470:\t\t\topen_flag \u0026= ~O_CREAT;\n4471:\t\tif (dir_inode-\u003ei_op-\u003eatomic_open) {\n4472:\t\t\tif (nd-\u003eflags \u0026 LOOKUP_DIRECTORY)\n4473:\t\t\t\topen_flag \|= O_DIRECTORY;\n4474:\t\t\tdentry = atomic_open(\u0026nd-\u003epath, dentry, file, open_flag, mode);\n4475:\t\t\tif (unlikely(create_error) \u0026\u0026 dentry == ERR_PTR(-ENOENT))\n4476:\t\t\t\tdentry = ERR_PTR(create_error);\n4477:\t\t\treturn dentry;\n4478:\t\t}\n4479:\t\n" }
35/2	2026/07/01 18:39	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 32571 output: 36 thoughts: 361 Thoughts: Analyzing the Atomic Open and Non-Exclusive Create Flow Okay, so `atomic_open` gets called first, if it's there. Makes sense. If it's not present, the flow goes through `lookup` – assuming, of course, that `d_in_lookup(dentry)` returns true. If that still results in a negative outcome, and `O_CREAT` is specified, then the system calls `create`. So, when `atomic_open` isn't implemented, the VFS does a simple: 1. `lookup`, and 2. if negative, `create`. Now, if it's a non-exclusive create (`O_CREAT` without `O_EXCL`), and the file doesn't exist, it uses `create`. Before this patch, we passed `excl = false` to `create`. Now, we pass nothing, letting the filesystem assume `excl = true`. Wait... if the filesystem assumes `excl = true`, doesn't that mean it's going to fail if the file already exists? Yes, but wait. The VFS already confirmed that the file doesn't exist. It's a negative dentry. But what if there's a race? What if the file gets created concurrently between `lookup` and `create`? If the filesystem is using an exclusive create (e.g., `mknod`) because it assumes `excl = true`, it will fail with `EEXIST`. Then what does the VFS do? Hold on. If `create` returns `EEXIST`, `lookup_open` returns `ERR_PTR(-EEXIST)`. But in a non-exclusive create situation, we shouldn't fail with `EEXIST` if the file is created concurrently! We should just open the existing file. So, I need to check how the VFS handles `EEXIST` returned from `lookup_open` within `open_last_lookups`. That's where the problem lies.
36/2	2026/07/01 18:39	tool	read-file	0m Args: { "File": "fs/namei.c", "FirstLine": 4530, "LineCount": 100 } Results: { "Contents": "4530:\t\tstruct dentry dentry;\n4531:\t\n4532:\t\tif (open_flag \u0026 O_CREAT) {\n4533:\t\t\tif (trailing_slashes(nd))\n4534:\t\t\t\treturn ERR_PTR(-EISDIR);\n4535:\t\n4536:\t\t\t/ Don't bother on an O_EXCL create /\n4537:\t\t\tif (open_flag \u0026 O_EXCL)\n4538:\t\t\t\treturn NULL;\n4539:\t\t}\n4540:\t\n4541:\t\tif (trailing_slashes(nd))\n4542:\t\t\tnd-\u003eflags \|= LOOKUP_FOLLOW \| LOOKUP_DIRECTORY;\n4543:\t\n4544:\t\tdentry = lookup_fast(nd);\n4545:\t\tif (IS_ERR_OR_NULL(dentry))\n4546:\t\t\treturn dentry;\n4547:\t\n4548:\t\tif (open_flag \u0026 O_CREAT) {\n4549:\t\t\t/ Discard negative dentries. Need inode_lock to do the create /\n4550:\t\t\tif (!dentry-\u003ed_inode) {\n4551:\t\t\t\tif (!(nd-\u003eflags \u0026 LOOKUP_RCU))\n4552:\t\t\t\t\tdput(dentry);\n4553:\t\t\t\tdentry = NULL;\n4554:\t\t\t}\n4555:\t\t}\n4556:\t\treturn dentry;\n4557:\t}\n4558:\t\n4559:\tstatic const char open_last_lookups(struct nameidata nd,\n4560:\t\t\t struct file file, const struct open_flags op)\n4561:\t{\n4562:\t\tstruct delegated_inode delegated_inode = { };\n4563:\t\tstruct dentry dir = nd-\u003epath.dentry;\n4564:\t\tint open_flag = op-\u003eopen_flag;\n4565:\t\tbool got_write = false;\n4566:\t\tstruct dentry dentry;\n4567:\t\tconst char res;\n4568:\t\n4569:\t\tnd-\u003eflags \|= op-\u003eintent;\n4570:\t\n4571:\t\tif (nd-\u003elast_type != LAST_NORM) {\n4572:\t\t\tif (nd-\u003edepth)\n4573:\t\t\t\tput_link(nd);\n4574:\t\t\treturn handle_dots(nd, nd-\u003elast_type);\n4575:\t\t}\n4576:\t\n4577:\t\t/* We _can_ be in RCU mode here /\n4578:\t\tdentry = lookup_fast_for_open(nd, open_flag);\n4579:\t\tif (IS_ERR(dentry))\n4580:\t\t\treturn ERR_CAST(dentry);\n4581:\t\n4582:\t\tif (likely(dentry))\n4583:\t\t\tgoto finish_lookup;\n4584:\t\n4585:\t\tif (!(open_flag \u0026 O_CREAT)) {\n4586:\t\t\tif (WARN_ON_ONCE(nd-\u003eflags \u0026 LOOKUP_RCU))\n4587:\t\t\t\treturn ERR_PTR(-ECHILD);\n4588:\t\t} else {\n4589:\t\t\tif (nd-\u003eflags \u0026 LOOKUP_RCU) {\n4590:\t\t\t\tif (!try_to_unlazy(nd))\n4591:\t\t\t\t\treturn ERR_PTR(-ECHILD);\n4592:\t\t\t}\n4593:\t\t}\n4594:\tretry:\n4595:\t\tif (open_flag \u0026 (O_CREAT \| O_TRUNC \| O_WRONLY \| O_RDWR)) {\n4596:\t\t\tgot_write = !mnt_want_write(nd-\u003epath.mnt);\n4597:\t\t\t/\n4598:\t\t\t * do _not_ fail yet - we might not need that or fail with\n4599:\t\t\t * a different error; let lookup_open() decide; we'll be\n4600:\t\t\t * dropping this one anyway.\n4601:\t\t\t */\n4602:\t\t}\n4603:\t\tif (open_flag \u0026 O_CREAT)\n4604:\t\t\tinode_lock(dir-\u003ed_inode);\n4605:\t\telse\n4606:\t\t\tinode_lock_shared(dir-\u003ed_inode);\n4607:\t\tdentry = lookup_open(nd, file, op, got_write, \u0026delegated_inode);\n4608:\t\tif (!IS_ERR(dentry)) {\n4609:\t\t\tif (file-\u003ef_mode \u0026 FMODE_CREATED)\n4610:\t\t\t\tfsnotify_create(dir-\u003ed_inode, dentry);\n4611:\t\t\tif (file-\u003ef_mode \u0026 FMODE_OPENED)\n4612:\t\t\t\tfsnotify_open(file);\n4613:\t\t}\n4614:\t\tif (open_flag \u0026 O_CREAT)\n4615:\t\t\tinode_unlock(dir-\u003ed_inode);\n4616:\t\telse\n4617:\t\t\tinode_unlock_shared(dir-\u003ed_inode);\n4618:\t\n4619:\t\tif (got_write)\n4620:\t\t\tmnt_drop_write(nd-\u003epath.mnt);\n4621:\t\n4622:\t\tif (IS_ERR(dentry)) {\n4623:\t\t\tif (is_delegated(\u0026delegated_inode)) {\n4624:\t\t\t\tint error = break_deleg_wait(\u0026delegated_inode);\n4625:\t\n4626:\t\t\t\tif (!error)\n4627:\t\t\t\t\tgoto retry;\n4628:\t\t\t\treturn ERR_PTR(error);\n4629:\t\t\t}\n" }
37/2	2026/07/01 18:39	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 34877 output: 35 thoughts: 32 Thoughts: Okay, here's my attempt at summarizing that thought process, keeping in mind I'm speaking to a fellow expert: Internal Review of `open_last_lookups` Functionality Hmm, hold on. Does `open_last_lookups` actually account for `EEXIST` errors? That's a critical detail I need to verify. I need to be absolutely sure that function behaves as expected in that particular scenario. I'm going to quickly re-examine the implementation of `open_last_lookups` to confirm it handles that edge case correctly. I need to refresh my memory on that section of code to make sure there aren't any potential vulnerabilities related to file already exists errors.
38/2	2026/07/01 18:39	tool	read-file	0m Args: { "File": "fs/namei.c", "FirstLine": 4630, "LineCount": 50 } Results: { "Contents": "4630:\t\t\treturn ERR_CAST(dentry);\n4631:\t\t}\n4632:\t\n4633:\t\tif (file-\u003ef_mode \u0026 (FMODE_OPENED \| FMODE_CREATED)) {\n4634:\t\t\tdput(nd-\u003epath.dentry);\n4635:\t\t\tnd-\u003epath.dentry = dentry;\n4636:\t\t\treturn NULL;\n4637:\t\t}\n4638:\t\n4639:\tfinish_lookup:\n4640:\t\tif (nd-\u003edepth)\n4641:\t\t\tput_link(nd);\n4642:\t\tres = step_into(nd, WALK_TRAILING, dentry);\n4643:\t\tif (unlikely(res))\n4644:\t\t\tnd-\u003eflags \u0026= ~(LOOKUP_OPEN\|LOOKUP_CREATE\|LOOKUP_EXCL);\n4645:\t\treturn res;\n4646:\t}\n4647:\t\n4648:\t/\n4649:\t Handle the last step of open()\n4650:\t /\n4651:\tstatic int do_open(struct nameidata nd,\n4652:\t\t\t struct file file, const struct open_flags op)\n4653:\t{\n4654:\t\tstruct mnt_idmap *idmap;\n4655:\t\tint open_flag = op-\u003eopen_flag;\n4656:\t\tbool do_truncate;\n4657:\t\tint acc_mode;\n4658:\t\tint error;\n4659:\t\n4660:\t\tif (!(file-\u003ef_mode \u0026 (FMODE_OPENED \| FMODE_CREATED))) {\n4661:\t\t\terror = complete_walk(nd);\n4662:\t\t\tif (error)\n4663:\t\t\t\treturn error;\n4664:\t\t}\n4665:\t\tif (!(file-\u003ef_mode \u0026 FMODE_CREATED))\n4666:\t\t\taudit_inode(nd-\u003ename, nd-\u003epath.dentry, 0);\n4667:\t\tidmap = mnt_idmap(nd-\u003epath.mnt);\n4668:\t\tif (open_flag \u0026 O_CREAT) {\n4669:\t\t\tif ((open_flag \u0026 O_EXCL) \u0026\u0026 !(file-\u003ef_mode \u0026 FMODE_CREATED))\n4670:\t\t\t\treturn -EEXIST;\n4671:\t\t\tif (d_is_dir(nd-\u003epath.dentry))\n4672:\t\t\t\treturn -EISDIR;\n4673:\t\t\terror = may_create_in_sticky(idmap, nd,\n4674:\t\t\t\t\t\t d_backing_inode(nd-\u003epath.dentry));\n4675:\t\t\tif (unlikely(error))\n4676:\t\t\t\treturn error;\n4677:\t\t}\n4678:\t\n4679:\t\tif ((open_flag \u0026 __O_REGULAR) \u0026\u0026 !d_is_reg(nd-\u003epath.dentry))\n" }
39/2	2026/07/01 18:39	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 35856 output: 27 thoughts: 718 Thoughts: Analyzing the Refactoring of the `create` Inode Operation Okay, let's break this down. The core issue is the `excl` argument passed to the `create` inode operation. Initially, I thought that if `lookup_open` returns `EEXIST`, it simply returns `EEXIST`. But wait, if `create` returns `EEXIST`, it suggests a concurrent creation. If `O_EXCL` wasn't set, then `open` shouldn't fail with `EEXIST` when opening. However, considering that `inode_lock(dir->d_inode)` is held when `create` is called by the VFS, no other process on the same machine can concurrently create the file in the same directory. The `inode_lock(dir->d_inode)` confirms this; the lookup and creation are effectively atomic for local filesystems. Then the thought crossed my mind, what about a network filesystem and a file created concurrently by another machine? If it's a network filesystem, it should implement `atomic_open`. Otherwise, if it doesn't implement `atomic_open`, it can't handle concurrent creates from other machines properly anyway, or just returns `EEXIST` and fails the open. Therefore, the `excl` argument to `create` was largely pointless for local filesystems since the `inode_lock` guarantees the file doesn't exist when `create` is called. Network filesystems are the ones that should use `atomic_open` to deal with concurrency from other machines. This perfectly aligns with the porting documentation's guidance: ".create inode_operation no longer receives the 'excl' arg. It must always assume the file does not already exist. If the filesystem needs to be involved in non-exclusive create, it should provide atomic_open." So, this patch is a pure refactoring. It eliminates an argument that was essentially always `true` (or, should be treated as such) for local filesystems, and for network filesystems they are supposed to use `atomic_open` to handle concurrency. The changes are largely cosmetic. Does this introduce any new functional logic that would need fuzzing? No. It's simply removing a redundant argument from a VFS callback and updating all the filesystems to fit the new signature. The underlying logic of the filesystems remains unchanged; they simply drop the `excl` argument. For instance, `ext4_create`, `btrfs_create` and `vfs_create` all just dropped the `excl` argument. `lookup_open` also dropped `open_flag & O_EXCL`. Let's do a quick double-check to make sure no filesystem unexpectedly changed its behavior. `gfs2_create` now passes `1` instead of `excl`, but since `gfs2` implements `atomic_open`, `gfs2_create` is only called by `vfs_create` (which always passed `true` before) or by `lookup_open` if `atomic_open` is not used (but it is used). Then I remembered that `vfs_create` is called by `mknod` and `open(O_CREAT)` if `atomic_open` is not used. However, `open` uses `lookup_open`, so I'm covered. And `vfs_create` is a separate function, so I'm not confusing this with `vfs_mknod`. This confirms that this is truly just a cleanup.
40/2	2026/07/01 18:39	tool	grepper	0m Args: { "Expression": "vfs_create\\(", "PathPrefix": "fs/" } Results: { "Output": "fs/9p/vfs_inode.c=654=static int\nfs/9p/vfs_inode.c:655:v9fs_vfs_create(struct mnt_idmap idmap, struct inode dir,\nfs/9p/vfs_inode.c-656-\t\tstruct dentry dentry, umode_t mode)\n--\nfs/ecryptfs/inode.c=185=ecryptfs_do_create(struct inode directory_inode,\n--\nfs/ecryptfs/inode.c-196-\tlower_dir = lower_dentry-\u003ed_parent-\u003ed_inode;\nfs/ecryptfs/inode.c:197:\trc = vfs_create(\u0026nop_mnt_idmap, lower_dentry, mode, NULL);\nfs/ecryptfs/inode.c-198-\tif (rc) {\n--\nfs/libfs.c=2267=void stashed_dentry_prune(struct dentry dentry)\n--\nfs/libfs.c-2293- \nfs/libfs.c:2294: * Returns: a negative dentry on which vfs_create() or similar may\nfs/libfs.c-2295- * be attempted, or an error.\n--\nfs/namei.c=4150=static inline umode_t vfs_prepare_mode(struct mnt_idmap idmap,\n--\nfs/namei.c-4181- /\nfs/namei.c:4182:int vfs_create(struct mnt_idmap idmap, struct dentry dentry, umode_t mode,\nfs/namei.c-4183-\t struct delegated_inode di)\n--\nfs/namei.c=5022=struct file dentry_create(struct path path, int flags, umode_t mode,\n--\nfs/namei.c-5071-\t} else {\nfs/namei.c:5072:\t\terror = vfs_create(mnt_idmap(path-\u003emnt), path-\u003edentry, mode, NULL);\nfs/namei.c-5073-\t\tif (!error)\n--\nfs/namei.c=5154=int filename_mknodat(int dfd, struct filename name, umode_t mode,\n--\nfs/namei.c-5179-\t\tcase 0: case S_IFREG:\nfs/namei.c:5180:\t\t\terror = vfs_create(idmap, dentry, mode, \u0026di);\nfs/namei.c-5181-\t\t\tif (!error)\n--\nfs/nfsd/nfs3proc.c=253=nfsd3_create_file(struct svc_rqst rqstp, struct svc_fh fhp,\n--\nfs/nfsd/nfs3proc.c-265-\nfs/nfsd/nfs3proc.c:266:\ttrace_nfsd_vfs_create(rqstp, fhp, S_IFREG, argp-\u003ename, argp-\u003elen);\nfs/nfsd/nfs3proc.c-267-\n--\nfs/nfsd/nfs3proc.c-343-\t\tgoto out;\nfs/nfsd/nfs3proc.c:344:\thost_err = vfs_create(\u0026nop_mnt_idmap, child, iap-\u003eia_mode, NULL);\nfs/nfsd/nfs3proc.c-345-\tif (host_err \u003c 0) {\n--\nfs/nfsd/nfs4proc.c=204=static __be32\nfs/nfsd/nfs4proc.c:205:nfsd4_vfs_create(struct svc_fh fhp, struct dentry child,\nfs/nfsd/nfs4proc.c-206-\t\t struct nfsd4_open open)\n--\nfs/nfsd/nfs4proc.c=248=nfsd4_create_file(struct svc_rqst rqstp, struct svc_fh fhp,\n--\nfs/nfsd/nfs4proc.c-381-\t\tgoto out;\nfs/nfsd/nfs4proc.c:382:\tstatus = nfsd4_vfs_create(fhp, \u0026child, open);\nfs/nfsd/nfs4proc.c-383-\tif (status != nfs_ok)\n--\nfs/nfsd/vfs.c=1727=nfsd_create_setattr(struct svc_rqst rqstp, struct svc_fh fhp,\n--\nfs/nfsd/vfs.c-1777- \nfs/nfsd/vfs.c:1778: call this only after vfs_create() is called.\nfs/nfsd/vfs.c-1779- * /\n--\nfs/nfsd/vfs.c=1789=nfsd_create_locked(struct svc_rqst rqstp, struct svc_fh fhp,\n--\nfs/nfsd/vfs.c-1817-\tcase S_IFREG:\nfs/nfsd/vfs.c:1818:\t\thost_err = vfs_create(\u0026nop_mnt_idmap, dchild, iap-\u003eia_mode, NULL);\nfs/nfsd/vfs.c-1819-\t\tif (!host_err)\n--\nfs/nfsd/vfs.c=1869=nfsd_create(struct svc_rqst rqstp, struct svc_fh fhp,\n--\nfs/nfsd/vfs.c-1876-\nfs/nfsd/vfs.c:1877:\ttrace_nfsd_vfs_create(rqstp, fhp, type, fname, flen);\nfs/nfsd/vfs.c-1878-\n--\nfs/overlayfs/overlayfs.h=240=static inline int ovl_do_create(struct ovl_fs ofs,\n--\nfs/overlayfs/overlayfs.h-243-{\nfs/overlayfs/overlayfs.h:244:\tint err = vfs_create(ovl_upper_mnt_idmap(ofs), dentry, mode, NULL);\nfs/overlayfs/overlayfs.h-245-\n--\nfs/smb/server/smb2pdu.c=2798=static int smb2_creat(struct ksmbd_work work,\n--\nfs/smb/server/smb2pdu.c-2821-\t\tmode = share_config_create_mode(share, posix_mode);\nfs/smb/server/smb2pdu.c:2822:\t\trc = ksmbd_vfs_create(work, name, mode);\nfs/smb/server/smb2pdu.c-2823-\t\tif (rc)\n--\nfs/smb/server/vfs.c=116=void ksmbd_vfs_query_maximal_access(struct mnt_idmap idmap,\n--\nfs/smb/server/vfs.c-137-/*\nfs/smb/server/vfs.c:138: ksmbd_vfs_create() - vfs helper for smb create file\nfs/smb/server/vfs.c-139- * @work:\twork\n--\nfs/smb/server/vfs.c-144- /\nfs/smb/server/vfs.c:145:int ksmbd_vfs_create(struct ksmbd_work work, const char name, umode_t mode)\nfs/smb/server/vfs.c-146-{\n--\nfs/smb/server/vfs.c-161-\tmode \|= S_IFREG;\nfs/smb/server/vfs.c:162:\terr = vfs_create(mnt_idmap(path.mnt), dentry, mode, NULL);\nfs/smb/server/vfs.c-163-\tif (!err) {\n--\nfs/smb/server/vfs.h=76=void ksmbd_vfs_query_maximal_access(struct mnt_idmap idmap,\nfs/smb/server/vfs.h-77-\t\t\t\t struct dentry dentry, __le32 daccess);\nfs/smb/server/vfs.h:78:int ksmbd_vfs_create(struct ksmbd_work work, const char name, umode_t mode);\nfs/smb/server/vfs.h-79-int ksmbd_vfs_mkdir(struct ksmbd_work work, const char name, umode_t mode);\n" }
41/2	2026/07/01 18:39	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 39584 output: 26 thoughts: 113 Thoughts: Delving into the Kernel's File System Creation Mechanisms Okay, so I'm tracing the origins of `vfs_create`. My initial thought was that it's called by `filename_mknodat`, which is the underlying function for the `mknod` system call. That seems straightforward enough. But then I started thinking about `dentry_create`. My memory is a bit fuzzy on this, and I need to solidify my understanding. I initially considered if `dentry_create` was involved in `open` in some cases – that feels wrong. Ah, right! I recall `dentry_create` is used by `path_openat`. Wait, no that isn't correct. I know I have seen it in other code paths. Okay, let me think. Ah! `cachefiles`, `overlayfs`, `nfsd`, and `ksmbd` all use `dentry_create`. Those are all interesting use cases. `cachefiles`, now that's intriguing. I need to refresh my memory on the interactions of `cachefiles` and the directory entry cache. I'd better double-check the code to confirm if my understanding is correct.
42/2	2026/07/01 18:40	tool	grepper	0m Args: { "Expression": "dentry_create", "PathPrefix": "fs/" } Results: { "Output": "fs/namei.c=5003=EXPORT_SYMBOL(start_creating_user_path);\n--\nfs/namei.c-5005-/*\nfs/namei.c:5006: dentry_create - Create and open a file\nfs/namei.c-5007- * @path: path to create\n--\nfs/namei.c-5021- /\nfs/namei.c:5022:struct file dentry_create(struct path path, int flags, umode_t mode,\nfs/namei.c-5023-\t\t\t const struct cred cred)\n--\nfs/namei.c-5080-}\nfs/namei.c:5081:EXPORT_SYMBOL(dentry_create);\nfs/namei.c-5082-\n--\nfs/nfsd/nfs4proc.c=205=nfsd4_vfs_create(struct svc_fh fhp, struct dentry child,\n--\nfs/nfsd/nfs4proc.c-228-\tpath.dentry = child;\nfs/nfsd/nfs4proc.c:229:\tfilp = dentry_create(\u0026path, oflags, open-\u003eop_iattr.ia_mode,\nfs/nfsd/nfs4proc.c-230-\t\t\t current_cred());\n--\nfs/overlayfs/dir.c=599=static const struct cred ovl_override_creator_creds(const struct cred original_creds,\n--\nfs/overlayfs/dir.c-613-\nfs/overlayfs/dir.c:614:\terr = security_dentry_create_files_as(dentry, mode, \u0026dentry-\u003ed_name,\nfs/overlayfs/dir.c-615-\t\t\t\t\t original_creds, override_cred);\n" }
43/2	2026/07/01 18:40	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 40456 output: 38 thoughts: 963 Thoughts: Analyzing the Redundant 'excl' Argument in `vfs_create` Right, let's break this down. It seems `nfsd` uses `dentry_create` and both `nfsd`, `ksmbd`, `overlayfs`, `ecryptfs`, and `mknod` use `vfs_create`. And before this patch, they were all passing `true` to `vfs_create` for the `excl` argument. Wait, hold on, wasn't `vfs_create`'s signature different before the patch? Let me check… Yeah, `int vfs_create(struct mnt_idmap idmap, struct dentry dentry, umode_t mode, bool want_excl)`. But the patch diff in `fs/namei.c` shows the `vfs_create` call change! It's not taking that argument at all now! It was always passing `true`! So, the original `vfs_create` implementation didn't even have that `want_excl` argument. It was just implicitly passing `true` to `dir->i_op->create`. Meanwhile, `lookup_open` was taking the `open_flag & O_EXCL` value. So, the only place the `excl` value could be `false` was in `lookup_open` if `O_EXCL` wasn't set. And critically, when `lookup_open` is called, the VFS is holding `inode_lock(dir->d_inode)`. This means concurrent creation on the same machine is impossible. If it's a local filesystem, `create` just… creates the file. The `excl` argument is irrelevant, since the file doesn't exist yet anyway! If it's a network filesystem, it should be using `atomic_open` to handle concurrent creations from different machines. If it doesn't, it just calls `create`, and if it fails with `EEXIST`, `lookup_open` returns `EEXIST`. (Which is incorrect for a non-exclusive creation, but that's a filesystem bug for not implementing `atomic_open`). Therefore, that `excl` argument to `create` was entirely redundant. It's useless. That's why it was removed. No functional changes are needed to be fuzzed here; it's a pure API refactoring, removing a useless argument. The kernel's behavior is exactly the same as before. The only difference is that filesystems that previously checked that `excl` value – like `gfs2`, `nfs`, and `vboxsf` – are now just hardcoding `1`, `O_EXCL`, or `true` in their internal calls when called from `create`. Wait, but `gfs2_create` now passes `1` to `gfs2_create_inode`. Previously, it passed `excl`. `gfs2_create` was only called from `vfs_create` (which passed `true`) or `lookup_open` (which passed `open_flag & O_EXCL`). Ah! If `lookup_open` passed `open_flag & O_EXCL` to `gfs2_create` and `O_EXCL` was not set, `gfs2_create` would receive `false`. Then it would pass `0` to `gfs2_create_inode`. Now, it always passes `1`. Does `gfs2_create_inode` behave differently if `excl` is `1` versus `0`? Let's check `gfs2_create_inode`…
44/2	2026/07/01 18:40	tool	read-file	0m Args: { "File": "fs/gfs2/inode.c", "FirstLine": 700, "LineCount": 100 } Results: { "Contents": " 700:\tstatic int gfs2_create_inode(struct inode dir, struct dentry dentry,\n 701:\t\t\t\t struct file file,\n 702:\t\t\t\t umode_t mode, dev_t dev, const char symname,\n 703:\t\t\t\t unsigned int size, int excl)\n 704:\t{\n 705:\t\tconst struct qstr name = \u0026dentry-\u003ed_name;\n 706:\t\tstruct posix_acl default_acl, acl;\n 707:\t\tstruct gfs2_holder d_gh, gh;\n 708:\t\tstruct inode inode = NULL;\n 709:\t\tstruct gfs2_inode dip = GFS2_I(dir), ip;\n 710:\t\tstruct gfs2_sbd sdp = GFS2_SB(\u0026dip-\u003ei_inode);\n 711:\t\tstruct gfs2_glock io_gl;\n 712:\t\tint error, dealloc_error;\n 713:\t\tu32 aflags = 0;\n 714:\t\tunsigned blocks = 1;\n 715:\t\tstruct gfs2_diradd da = { .bh = NULL, .save_loc = 1, };\n 716:\t\tbool xattr_initialized = false;\n 717:\t\n 718:\t\tif (!name-\u003elen \|\| name-\u003elen \u003e GFS2_FNAMESIZE)\n 719:\t\t\treturn -ENAMETOOLONG;\n 720:\t\n 721:\t\terror = gfs2_qa_get(dip);\n 722:\t\tif (error)\n 723:\t\t\treturn error;\n 724:\t\n 725:\t\terror = gfs2_rindex_update(sdp);\n 726:\t\tif (error)\n 727:\t\t\tgoto fail;\n 728:\t\n 729:\t\terror = gfs2_glock_nq_init(dip-\u003ei_gl, LM_ST_EXCLUSIVE, 0, \u0026d_gh);\n 730:\t\tif (error)\n 731:\t\t\tgoto fail;\n 732:\t\tgfs2_holder_mark_uninitialized(\u0026gh);\n 733:\t\n 734:\t\terror = create_ok(dip, name, mode);\n 735:\t\tif (error)\n 736:\t\t\tgoto fail_gunlock;\n 737:\t\n 738:\t\tinode = gfs2_dir_search(dir, \u0026dentry-\u003ed_name, !S_ISREG(mode) \|\| excl);\n 739:\t\terror = PTR_ERR(inode);\n 740:\t\tif (!IS_ERR(inode)) {\n 741:\t\t\tif (file \u0026\u0026 (file-\u003ef_flags \u0026 __O_REGULAR) \u0026\u0026\n 742:\t\t\t !S_ISREG(inode-\u003ei_mode)) {\n 743:\t\t\t\tiput(inode);\n 744:\t\t\t\tinode = NULL;\n 745:\t\t\t\terror = -EFTYPE;\n 746:\t\t\t\tgoto fail_gunlock;\n 747:\t\t\t}\n 748:\t\t\tif (S_ISDIR(inode-\u003ei_mode)) {\n 749:\t\t\t\tiput(inode);\n 750:\t\t\t\tinode = NULL;\n 751:\t\t\t\terror = -EISDIR;\n 752:\t\t\t\tgoto fail_gunlock;\n 753:\t\t\t}\n 754:\t\t\td_instantiate(dentry, inode);\n 755:\t\t\terror = 0;\n 756:\t\t\tif (file) {\n 757:\t\t\t\tif (S_ISREG(inode-\u003ei_mode))\n 758:\t\t\t\t\terror = finish_open(file, dentry, gfs2_open_common);\n 759:\t\t\t\telse\n 760:\t\t\t\t\terror = finish_no_open(file, NULL);\n 761:\t\t\t}\n 762:\t\t\tgfs2_glock_dq_uninit(\u0026d_gh);\n 763:\t\t\tgoto fail;\n 764:\t\t} else if (error != -ENOENT) {\n 765:\t\t\tgoto fail_gunlock;\n 766:\t\t}\n 767:\t\n 768:\t\terror = gfs2_diradd_alloc_required(dir, name, \u0026da);\n 769:\t\tif (error \u003c 0)\n 770:\t\t\tgoto fail_gunlock;\n 771:\t\n 772:\t\tinode = new_inode(sdp-\u003esd_vfs);\n 773:\t\terror = -ENOMEM;\n 774:\t\tif (!inode)\n 775:\t\t\tgoto fail_gunlock;\n 776:\t\tgfs2_setup_inode(inode);\n 777:\t\tip = GFS2_I(inode);\n 778:\t\n 779:\t\terror = posix_acl_create(dir, \u0026mode, \u0026default_acl, \u0026acl);\n 780:\t\tif (error)\n 781:\t\t\tgoto fail_gunlock;\n 782:\t\n 783:\t\terror = gfs2_qa_get(ip);\n 784:\t\tif (error)\n 785:\t\t\tgoto fail_free_acls;\n 786:\t\n 787:\t\tinode-\u003ei_mode = mode;\n 788:\t\tset_nlink(inode, S_ISDIR(mode) ? 2 : 1);\n 789:\t\tinode-\u003ei_rdev = dev;\n 790:\t\tinode-\u003ei_size = size;\n 791:\t\tsimple_inode_init_ts(inode);\n 792:\t\tmunge_mode_uid_gid(dip, inode);\n 793:\t\tcheck_and_update_goal(dip);\n 794:\t\tip-\u003ei_goal = dip-\u003ei_goal;\n 795:\t\tip-\u003ei_diskflags = 0;\n 796:\t\tip-\u003ei_eattr = 0;\n 797:\t\tip-\u003ei_height = 0;\n 798:\t\tip-\u003ei_depth = 0;\n 799:\t\tip-\u003ei_entries = 0;\n" }
45/2	2026/07/01 18:40	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 43861 output: 31 thoughts: 573 Thoughts: Analyzing the Implications of `excl` in File Creation Okay, so I'm looking at how this `excl` flag is being passed around in the file creation process, specifically in relation to `gfs2_create_inode`. I see it being used in `gfs2_dir_search` via: ```c inode = gfs2_dir_search(dir, &dentry->d_name, !S_ISREG(mode) \|\| excl); ``` My initial thought was, "Hey, if `gfs2_create` gets called by `lookup_open` with `excl = false`, wouldn't that mean `gfs2_create_inode` would get `excl = 0`?" But then, I remembered that `gfs2` implements `atomic_open`. Aha! That's a key detail. `lookup_open` calls `gfs2_atomic_open`, NOT `gfs2_create`. Let's check `gfs2_atomic_open`: ```c static int gfs2_atomic_open(struct inode dir, struct dentry dentry, struct file file, unsigned flags, umode_t mode) { bool excl = !!(flags & O_EXCL); if (!d_in_lookup(dentry)) goto skip_lookup; return gfs2_create_inode(dir, dentry, file, S_IFREG \| mode, 0, NULL, 0, excl); ``` Okay, so `gfs2_atomic_open` does pass the correct `excl` value. And thinking it through, `gfs2_create` is ONLY called by `vfs_create`. And `vfs_create` always* passes `true` for `excl`. So the situation, with `gfs2_create` passing `1`, is exactly the same as before. That makes sense. Next, I need to check the other filesystems. Let's start with `nfs`. `nfs` implements `atomic_open` too. The same logic should apply: `nfs_create` is only called by `vfs_create`, which always passes `true`. Therefore, passing `O_EXCL` in `nfs_create` is exactly the same behavior as before. Now, on to `vboxsf`. Same pattern. `vboxsf` implements `atomic_open`, so `vboxsf_dir_mkfile` is called by `vfs_create`, which always passes `true`. So, passing `true` is the same behavior. Finally, `cifs`. `cifs` also implements `atomic_open`. This means `cifs_create` is also called only by `vfs_create`. Which always passed `true` for `excl`. But, wait a minute, I don't remember `cifs_create` even using `excl` before. Need to verify that...
46/2	2026/07/01 18:40	tool	grepper	0m Args: { "Expression": "cifs_create", "PathPrefix": "fs/smb/client/" } Results: { "Output": "fs/smb/client/cached_dir.c=134=int open_cached_dir(unsigned int xid, struct cifs_tcon tcon,\n--\nfs/smb/client/cached_dir.c-275-\t\t.path = path,\nfs/smb/client/cached_dir.c:276:\t\t.create_options = cifs_create_options(cifs_sb, CREATE_NOT_FILE),\nfs/smb/client/cached_dir.c-277-\t\t.desired_access = FILE_READ_DATA \| FILE_READ_ATTRIBUTES \|\n--\nfs/smb/client/cifsacl.c=1575=static struct smb_ntsd get_cifs_acl_by_path(struct cifs_sb_info cifs_sb,\n--\nfs/smb/client/cifsacl.c-1596-\t\t.desired_access = READ_CONTROL,\nfs/smb/client/cifsacl.c:1597:\t\t.create_options = cifs_create_options(cifs_sb, 0),\nfs/smb/client/cifsacl.c-1598-\t\t.disposition = FILE_OPEN,\n--\nfs/smb/client/cifsacl.c=1640=int set_cifs_acl(struct smb_ntsd pnntsd, __u32 acllen,\n--\nfs/smb/client/cifsacl.c-1668-\t\t.desired_access = access_flags,\nfs/smb/client/cifsacl.c:1669:\t\t.create_options = cifs_create_options(cifs_sb, 0),\nfs/smb/client/cifsacl.c-1670-\t\t.disposition = FILE_OPEN,\n--\nfs/smb/client/cifsfs.c=1228=const struct inode_operations cifs_dir_inode_ops = {\nfs/smb/client/cifsfs.c:1229:\t.create = cifs_create,\nfs/smb/client/cifsfs.c-1230-\t.atomic_open = cifs_atomic_open,\n--\nfs/smb/client/cifsfs.h=55=struct inode cifs_root_iget(struct super_block sb);\nfs/smb/client/cifsfs.h:56:int cifs_create(struct mnt_idmap idmap, struct inode dir,\nfs/smb/client/cifsfs.h-57-\t\tstruct dentry direntry, umode_t mode);\n--\nfs/smb/client/cifsglob.h=2232=static inline void move_cifs_info_to_smb2(struct smb2_file_all_info dst, const FILE_ALL_INFO src)\n--\nfs/smb/client/cifsglob.h-2249-\t\t.disposition = (_cd), \\\nfs/smb/client/cifsglob.h:2250:\t\t.create_options = cifs_create_options(_cifs_sb, (_co)), \\\nfs/smb/client/cifsglob.h-2251-\t\t.mode = (_mode), \\\n--\nfs/smb/client/cifsproto.h=340=int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon tcon,\n--\nfs/smb/client/cifsproto.h-343-\t\t\t unsigned int pbytes_read);\nfs/smb/client/cifsproto.h:344:int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon tcon,\nfs/smb/client/cifsproto.h-345-\t\t\t struct cifs_sb_info cifs_sb,\n--\nfs/smb/client/cifsproto.h=421=static inline int cifs_inval_name_dfs_link_error(const unsigned int xid,\n--\nfs/smb/client/cifsproto.h-431-\nfs/smb/client/cifsproto.h:432:static inline int cifs_create_options(struct cifs_sb_info cifs_sb, int options)\nfs/smb/client/cifsproto.h-433-{\n--\nfs/smb/client/cifssmb.c=2954=int cifs_query_reparse_point(const unsigned int xid,\n--\nfs/smb/client/cifssmb.c-2984-\t\t.desired_access = FILE_READ_ATTRIBUTES,\nfs/smb/client/cifssmb.c:2985:\t\t.create_options = cifs_create_options(cifs_sb,\nfs/smb/client/cifssmb.c-2986-\t\t\t\t\t\t OPEN_REPARSE_POINT),\n--\nfs/smb/client/cifssmb.c-3084-\nfs/smb/client/cifssmb.c:3085:struct inode cifs_create_reparse_inode(struct cifs_open_info_data data,\nfs/smb/client/cifssmb.c-3086-\t\t\t\t\tstruct super_block sb,\n--\nfs/smb/client/cifssmb.c=5833=CIFSSMBSetPathInfoFB(const unsigned int xid, struct cifs_tcon tcon,\n--\nfs/smb/client/cifssmb.c-5846-\t\t.desired_access = GENERIC_WRITE,\nfs/smb/client/cifssmb.c:5847:\t\t.create_options = cifs_create_options(cifs_sb, 0),\nfs/smb/client/cifssmb.c-5848-\t\t.disposition = FILE_OPEN,\n--\nfs/smb/client/dir.c=201=static int __cifs_do_create(struct inode dir, struct dentry direntry,\n--\nfs/smb/client/dir.c-240-\t\t\t\t/* query inode info /\nfs/smb/client/dir.c:241:\t\t\t\tgoto cifs_create_get_file_info;\nfs/smb/client/dir.c-242-\t\t\t}\n--\nfs/smb/client/dir.c-264-\t\t\t\tCIFSSMBClose(xid, tcon, fid-\u003enetfid);\nfs/smb/client/dir.c:265:\t\t\t\tgoto cifs_create_get_file_info;\nfs/smb/client/dir.c-266-\t\t\t}\nfs/smb/client/dir.c-267-\t\t\t/ success, no need to query /\nfs/smb/client/dir.c:268:\t\t\tgoto cifs_create_set_dentry;\nfs/smb/client/dir.c-269-\nfs/smb/client/dir.c-270-\t\tcase -ENOENT:\nfs/smb/client/dir.c:271:\t\t\tgoto cifs_create_get_file_info;\nfs/smb/client/dir.c-272-\n--\nfs/smb/client/dir.c-373-\t\t.desired_access = desired_access,\nfs/smb/client/dir.c:374:\t\t.create_options = cifs_create_options(cifs_sb, create_options),\nfs/smb/client/dir.c-375-\t\t.disposition = disposition,\n--\nfs/smb/client/dir.c-382-\tif (rc) {\nfs/smb/client/dir.c:383:\t\tcifs_dbg(FYI, \"cifs_create returned 0x%x\\n\", rc);\nfs/smb/client/dir.c-384-\t\tif (rc == -EACCES \u0026\u0026 rdwr_for_fscache == 1) {\n--\nfs/smb/client/dir.c-429-\nfs/smb/client/dir.c:430:cifs_create_get_file_info:\nfs/smb/client/dir.c-431-\t/ server might mask mode so we have to query for it /\n--\nfs/smb/client/dir.c-458-#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY\nfs/smb/client/dir.c:459:cifs_create_set_dentry:\nfs/smb/client/dir.c-460-#endif / CONFIG_CIFS_ALLOW_INSECURE_LEGACY /\n--\nfs/smb/client/dir.c=520=int cifs_atomic_open(struct inode dir, struct dentry direntry,\n--\nfs/smb/client/dir.c-646- /\nfs/smb/client/dir.c:647:int cifs_create(struct mnt_idmap idmap, struct inode dir,\nfs/smb/client/dir.c-648-\t\tstruct dentry direntry, umode_t mode)\n--\nfs/smb/client/dir.c-668-\nfs/smb/client/dir.c:669:\tcifs_dbg(FYI, \"cifs_create parent inode = 0x%p name is: %pd and dentry = 0x%p\\n\",\nfs/smb/client/dir.c-670-\t\t dir, direntry, direntry);\n--\nfs/smb/client/file.c=547=static int cifs_nt_open(const char full_path, struct inode inode, struct cifs_sb_info cifs_sb,\n--\nfs/smb/client/file.c-600-\t\t.desired_access = desired_access,\nfs/smb/client/file.c:601:\t\t.create_options = cifs_create_options(cifs_sb, create_options),\nfs/smb/client/file.c-602-\t\t.disposition = disposition,\n--\nfs/smb/client/file.c=1233=cifs_reopen_file(struct cifsFileInfo cfile, bool can_flush)\n--\nfs/smb/client/file.c-1328-\t\t.desired_access = desired_access,\nfs/smb/client/file.c:1329:\t\t.create_options = cifs_create_options(cifs_sb, create_options),\nfs/smb/client/file.c-1330-\t\t.disposition = disposition,\n--\nfs/smb/client/inode.c=269=cifs_unix_basic_to_fattr(struct cifs_fattr fattr, FILE_UNIX_BASIC_INFO info,\n--\nfs/smb/client/inode.c-362- /\nfs/smb/client/inode.c:363:static void cifs_create_junction_fattr(struct cifs_fattr fattr,\nfs/smb/client/inode.c-364-\t\t\t\t struct super_block sb)\n--\nfs/smb/client/inode.c=408=cifs_get_file_info_unix(struct file filp)\n--\nfs/smb/client/inode.c-432-\t} else if (rc == -EREMOTE) {\nfs/smb/client/inode.c:433:\t\tcifs_create_junction_fattr(\u0026fattr, inode-\u003ei_sb);\nfs/smb/client/inode.c-434-\t} else\n--\nfs/smb/client/inode.c=444=static int cifs_get_unix_fattr(const unsigned char full_path,\n--\nfs/smb/client/inode.c-473-\t} else if (rc == -EREMOTE) {\nfs/smb/client/inode.c:474:\t\tcifs_create_junction_fattr(fattr, sb);\nfs/smb/client/inode.c-475-\t\trc = 0;\n--\nfs/smb/client/inode.c=535=cifs_sfu_type(struct cifs_fattr fattr, const char path,\n--\nfs/smb/client/inode.c-575-\t\t.desired_access = GENERIC_READ,\nfs/smb/client/inode.c:576:\t\t.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR),\nfs/smb/client/inode.c-577-\t\t.disposition = FILE_OPEN,\n--\nfs/smb/client/inode.c=980=cifs_get_file_info(struct file filp)\n--\nfs/smb/client/inode.c-1018-\tcase -EREMOTE:\nfs/smb/client/inode.c:1019:\t\tcifs_create_junction_fattr(\u0026fattr, inode-\u003ei_sb);\nfs/smb/client/inode.c-1020-\t\tbreak;\n--\nfs/smb/client/inode.c=1172=static int reparse_info_to_fattr(struct cifs_open_info_data data,\n--\nfs/smb/client/inode.c-1214-\t\tif (le32_to_cpu(data-\u003efi.Attributes) \u0026 ATTR_DIRECTORY) {\nfs/smb/client/inode.c:1215:\t\t\tcifs_create_junction_fattr(fattr, sb);\nfs/smb/client/inode.c-1216-\t\t\tgoto out;\n--\nfs/smb/client/inode.c-1239-\t\t\t\trc = 0;\nfs/smb/client/inode.c:1240:\t\t\t\tcifs_create_junction_fattr(fattr, sb);\nfs/smb/client/inode.c-1241-\t\t\t\tgoto out;\n--\nfs/smb/client/inode.c=1272=static int cifs_get_fattr(struct cifs_open_info_data data,\n--\nfs/smb/client/inode.c-1327-\t\t/ DFS link, no metadata available on this server /\nfs/smb/client/inode.c:1328:\t\tcifs_create_junction_fattr(fattr, sb);\nfs/smb/client/inode.c-1329-\t\trc = 0;\n--\nfs/smb/client/inode.c=1463=static int smb311_posix_get_fattr(struct cifs_open_info_data data,\n--\nfs/smb/client/inode.c-1506-\t\t/* DFS link, no metadata available on this server /\nfs/smb/client/inode.c:1507:\t\tcifs_create_junction_fattr(fattr, sb);\nfs/smb/client/inode.c-1508-\t\trc = 0;\n--\nfs/smb/client/inode.c=1805=cifs_rename_pending_delete(const char full_path, struct dentry dentry,\n--\nfs/smb/client/inode.c-1837-\t\t.desired_access = DELETE \| FILE_WRITE_ATTRIBUTES,\nfs/smb/client/inode.c:1838:\t\t.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR),\nfs/smb/client/inode.c-1839-\t\t.disposition = FILE_OPEN,\n--\nfs/smb/client/inode.c=2435=cifs_do_rename(const unsigned int xid, struct dentry from_dentry,\n--\nfs/smb/client/inode.c-2493-\t\t.desired_access = DELETE,\nfs/smb/client/inode.c:2494:\t\t.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR),\nfs/smb/client/inode.c-2495-\t\t.disposition = FILE_OPEN,\n--\nfs/smb/client/link.c=227=cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon tcon,\n--\nfs/smb/client/link.c-242-\t\t.desired_access = GENERIC_READ,\nfs/smb/client/link.c:243:\t\t.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR),\nfs/smb/client/link.c-244-\t\t.disposition = FILE_OPEN,\n--\nfs/smb/client/link.c=271=int\nfs/smb/client/link.c:272:cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon tcon,\nfs/smb/client/link.c-273-\t\t struct cifs_sb_info cifs_sb, const unsigned char path,\n--\nfs/smb/client/link.c-285-\t\t.desired_access = GENERIC_WRITE,\nfs/smb/client/link.c:286:\t\t.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR),\nfs/smb/client/link.c-287-\t\t.disposition = FILE_CREATE,\n--\nfs/smb/client/link.c=312=smb3_query_mf_symlink(unsigned int xid, struct cifs_tcon tcon,\n--\nfs/smb/client/link.c-329-\t\t.desired_access = GENERIC_READ,\nfs/smb/client/link.c:330:\t\t.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR),\nfs/smb/client/link.c-331-\t\t.disposition = FILE_OPEN,\n--\nfs/smb/client/link.c=375=smb3_create_mf_symlink(unsigned int xid, struct cifs_tcon tcon,\n--\nfs/smb/client/link.c-397-\t\t.desired_access = GENERIC_WRITE,\nfs/smb/client/link.c:398:\t\t.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR),\nfs/smb/client/link.c-399-\t\t.disposition = FILE_CREATE,\n--\nfs/smb/client/reparse.c=247=static int detect_directory_symlink_target(struct cifs_sb_info cifs_sb,\n--\nfs/smb/client/reparse.c-332-\toplock = 0;\nfs/smb/client/reparse.c:333:\toparms.create_options = cifs_create_options(cifs_sb,\nfs/smb/client/reparse.c-334-\t\t\t\t\t\t CREATE_NOT_FILE \| OPEN_REPARSE_POINT);\n--\nfs/smb/client/reparse.c-351-\t\toplock = 0;\nfs/smb/client/reparse.c:352:\t\toparms.create_options = cifs_create_options(cifs_sb,\nfs/smb/client/reparse.c-353-\t\t\t\t\t\t\t CREATE_NOT_DIR \| OPEN_REPARSE_POINT);\n--\nfs/smb/client/reparse.c=1235=bool cifs_reparse_point_to_fattr(struct cifs_sb_info cifs_sb,\n--\nfs/smb/client/reparse.c-1266-\t\t\treturn false;\nfs/smb/client/reparse.c:1267:\t\t/* See cifs_create_junction_fattr() /\nfs/smb/client/reparse.c-1268-\t\tfattr-\u003ecf_mode = S_IFDIR \| 0711;\n--\nfs/smb/client/smb1ops.c=942=smb_set_file_info(struct inode inode, const char full_path,\n--\nfs/smb/client/smb1ops.c-1026-\t\t.desired_access = SYNCHRONIZE \| FILE_WRITE_ATTRIBUTES,\nfs/smb/client/smb1ops.c:1027:\t\t.create_options = cifs_create_options(cifs_sb, 0),\nfs/smb/client/smb1ops.c-1028-\t\t.disposition = FILE_OPEN,\n--\nfs/smb/client/smb1ops.c=1387=struct smb_version_operations smb1_operations = {\n--\nfs/smb/client/smb1ops.c-1439-\t.get_reparse_point_buffer = cifs_get_reparse_point_buffer,\nfs/smb/client/smb1ops.c:1440:\t.create_reparse_inode = cifs_create_reparse_inode,\nfs/smb/client/smb1ops.c-1441-\t.open = cifs_open_file,\n--\nfs/smb/client/smb1ops.c-1458-\t.query_mf_symlink = cifs_query_mf_symlink,\nfs/smb/client/smb1ops.c:1459:\t.create_mf_symlink = cifs_create_mf_symlink,\nfs/smb/client/smb1ops.c-1460-\t.is_read_op = cifs_is_read_op,\n--\nfs/smb/client/smb1proto.h=108=int cifs_query_reparse_point(const unsigned int xid, struct cifs_tcon tcon,\n--\nfs/smb/client/smb1proto.h-111-\t\t\t int rsp_buftype);\nfs/smb/client/smb1proto.h:112:struct inode cifs_create_reparse_inode(struct cifs_open_info_data data,\nfs/smb/client/smb1proto.h-113-\t\t\t\t\tstruct super_block sb,\n--\nfs/smb/client/smb2ops.c=883=smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon tcon,\n--\nfs/smb/client/smb2ops.c-897-\t\t.disposition = FILE_OPEN,\nfs/smb/client/smb2ops.c:898:\t\t.create_options = cifs_create_options(cifs_sb, 0),\nfs/smb/client/smb2ops.c-899-\t\t.fid = \u0026fid,\n--\nfs/smb/client/smb2ops.c=928=smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon tcon,\n--\nfs/smb/client/smb2ops.c-941-\t\t.disposition = FILE_OPEN,\nfs/smb/client/smb2ops.c:942:\t\t.create_options = cifs_create_options(cifs_sb, 0),\nfs/smb/client/smb2ops.c-943-\t\t.fid = \u0026fid,\n--\nfs/smb/client/smb2ops.c=959=smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon tcon,\n--\nfs/smb/client/smb2ops.c-986-\t\t.disposition = FILE_OPEN,\nfs/smb/client/smb2ops.c:987:\t\t.create_options = cifs_create_options(cifs_sb, 0),\nfs/smb/client/smb2ops.c-988-\t\t.fid = \u0026fid,\n--\nfs/smb/client/smb2ops.c=1181=smb2_set_ea(const unsigned int xid, struct cifs_tcon tcon,\n--\nfs/smb/client/smb2ops.c-1283-\t\t.disposition = FILE_OPEN,\nfs/smb/client/smb2ops.c:1284:\t\t.create_options = cifs_create_options(cifs_sb, 0),\nfs/smb/client/smb2ops.c-1285-\t\t.fid = \u0026fid,\n--\nfs/smb/client/smb2ops.c=1577=smb2_ioctl_query_info(const unsigned int xid,\n--\nfs/smb/client/smb2ops.c-1652-\t\t.disposition = FILE_OPEN,\nfs/smb/client/smb2ops.c:1653:\t\t.create_options = cifs_create_options(cifs_sb, create_options),\nfs/smb/client/smb2ops.c-1654-\t\t.fid = \u0026fid,\n--\nfs/smb/client/smb2ops.c=2371=smb3_notify(const unsigned int xid, struct file pfile,\n--\nfs/smb/client/smb2ops.c-2420-\t\t.disposition = FILE_OPEN,\nfs/smb/client/smb2ops.c:2421:\t\t.create_options = cifs_create_options(cifs_sb, 0),\nfs/smb/client/smb2ops.c-2422-\t\t.fid = \u0026fid,\n--\nfs/smb/client/smb2ops.c=2454=smb2_query_dir_first(const unsigned int xid, struct cifs_tcon tcon,\n--\nfs/smb/client/smb2ops.c-2499-\t\t.disposition = FILE_OPEN,\nfs/smb/client/smb2ops.c:2500:\t\t.create_options = cifs_create_options(cifs_sb, 0),\nfs/smb/client/smb2ops.c-2501-\t\t.fid = fid,\n--\nfs/smb/client/smb2ops.c=2830=smb2_query_info_compound(const unsigned int xid, struct cifs_tcon tcon,\n--\nfs/smb/client/smb2ops.c-2890-\t\t.disposition = FILE_OPEN,\nfs/smb/client/smb2ops.c:2891:\t\t.create_options = cifs_create_options(cifs_sb, 0),\nfs/smb/client/smb2ops.c-2892-\t\t.fid = \u0026fid,\n--\nfs/smb/client/smb2ops.c=3027=smb311_queryfs(const unsigned int xid, struct cifs_tcon tcon,\n--\nfs/smb/client/smb2ops.c-3043-\t\t.disposition = FILE_OPEN,\nfs/smb/client/smb2ops.c:3044:\t\t.create_options = cifs_create_options(cifs_sb, 0),\nfs/smb/client/smb2ops.c-3045-\t\t.fid = \u0026fid,\n--\nfs/smb/client/smb2ops.c=3238=get_smb2_acl_by_path(struct cifs_sb_info cifs_sb,\n--\nfs/smb/client/smb2ops.c-3274-\t\t /\nfs/smb/client/smb2ops.c:3275:\t\t.create_options = cifs_create_options(cifs_sb, 0) \|\nfs/smb/client/smb2ops.c-3276-\t\t\t\t OPEN_REPARSE_POINT,\n--\nfs/smb/client/smb2ops.c=3304=set_smb2_acl(struct smb_ntsd *pnntsd, __u32 acllen,\n--\nfs/smb/client/smb2ops.c-3339-\t\t.desired_access = access_flags,\nfs/smb/client/smb2ops.c:3340:\t\t.create_options = cifs_create_options(cifs_sb, 0),\nfs/smb/client/smb2ops.c-3341-\t\t.disposition = FILE_OPEN,\n" }
47/2	2026/07/01 18:40	llm	patch-evaluator	0m Model: gemini-3.1-pro-preview Args: null Results: null Tokens: input: 52328 output: 190 thoughts: 413 Thoughts: Analysis of the CIFS Create Operation Patch Okay, so I've looked at this patch removing the `excl` argument from the `cifs_create` function. My initial thought is that before this modification, the `cifs_create` function itself didn't even use the `excl` parameter, right? It was effectively being ignored: ```c int cifs_create(struct mnt_idmap idmap, struct inode dir, struct dentry direntry, umode_t mode, bool excl) ``` So, as I understand it, this patch is purely a refactoring operation. It's about cleaning up the API, making things more streamlined. This is important to note; it's not* a functional change. Let me break down my understanding for clarity: * The primary change is the removal of the `excl` argument from the `create` inode operation. * The VFS functions `vfs_create` and `lookup_open` have been updated to no longer pass this `excl` flag. * Filesystems are being updated to drop the `excl` argument from their corresponding implementations as well. * The few filesystems that were previously forwarding an `excl` argument in calls to internal functions such as `gfs2`, `nfs`, and `vboxsf`, now consistently pass a value like `1`, `true`, or `O_EXCL`, in alignment with the previous behavior. Since `vfs_create` always passed `true` and the original `lookup_open` passed `open_flag & O_EXCL` and there is `inode_lock` on non-exclusive creates, the parameter was redundant. * Network filesystems, which should use `atomic_open` for non-exclusive creates, are already doing so (e.g. `gfs2`, `nfs`, `vboxsf`, `cifs`, `9p`, and `fuse`). Therefore, there is no change in the kernel's logical behavior that necessitates fuzzing. It's a pure API refactor and I'm going to set `WorthFuzzing=false` and explain that this is a straightforward API refactoring of the VFS `create` inode operation. The patch removes a redundant argument, but leaves the kernel logic untouched.
48/2	2026/07/01 18:40	tool	set-results	0m Args: { "EnableConfigs": [], "FocusSymbols": [], "Reasoning": "This patch is a tree-wide API refactoring that removes the redundant 'excl' argument from the 'create' inode operation. VFS previously passed 'true' from vfs_create() and 'open_flag \u0026 O_EXCL' from lookup_open(). However, for local filesystems, VFS holds the inode_lock during create, making concurrent creation impossible and the 'excl' argument redundant. For network filesystems, non-exclusive creates are handled via atomic_open(). The filesystems that used the argument internally (like gfs2, nfs, vboxsf) now hardcode 'true' or 'O_EXCL', which exactly matches the previous behavior when called from vfs_create. There are no functional changes to the kernel logic.", "WorthFuzzing": false } Results: { "EnableConfigs": null, "FocusSymbols": [], "Reasoning": "This patch is a tree-wide API refactoring that removes the redundant 'excl' argument from the 'create' inode operation. VFS previously passed 'true' from vfs_create() and 'open_flag \u0026 O_EXCL' from lookup_open(). However, for local filesystems, VFS holds the inode_lock during create, making concurrent creation impossible and the 'excl' argument redundant. For network filesystems, non-exclusive creates are handled via atomic_open(). The filesystems that used the argument internally (like gfs2, nfs, vboxsf) now hardcode 'true' or 'O_EXCL', which exactly matches the previous behavior when called from vfs_create. There are no functional changes to the kernel logic.", "WorthFuzzing": false }

LLM Calls Summary:
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Tool Calls Summary:
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