Track metadata bhs for an inode in fs-private part of the inode.

Signed-off-by: Jan Kara <jack@suse.cz>
---
 fs/udf/file.c    | 1 +
 fs/udf/namei.c   | 1 +
 fs/udf/super.c   | 6 ++++++
 fs/udf/symlink.c | 1 +
 fs/udf/udf_i.h   | 1 +
 fs/udf/udfdecl.h | 1 +
 6 files changed, 11 insertions(+)

diff --git a/fs/udf/file.c b/fs/udf/file.c
index 32ae7cfd72c5..8d51313173f3 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -251,4 +251,5 @@ static int udf_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
 
 const struct inode_operations udf_file_inode_operations = {
 	.setattr		= udf_setattr,
+	.get_metadata_bhs	= udf_get_metadata_bhs,
 };
diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 5f2e9a892bff..ef9eadb96f4e 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -1025,4 +1025,5 @@ const struct inode_operations udf_dir_inode_operations = {
 	.mknod				= udf_mknod,
 	.rename				= udf_rename,
 	.tmpfile			= udf_tmpfile,
+	.get_metadata_bhs		= udf_get_metadata_bhs,
 };
diff --git a/fs/udf/super.c b/fs/udf/super.c
index 27f463fd1d89..eb62972c9fda 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -166,6 +166,7 @@ static struct inode *udf_alloc_inode(struct super_block *sb)
 	ei->cached_extent.lstart = -1;
 	spin_lock_init(&ei->i_extent_cache_lock);
 	inode_set_iversion(&ei->vfs_inode, 1);
+	mmb_init(&ei->i_metadata_bhs);
 
 	return &ei->vfs_inode;
 }
@@ -205,6 +206,11 @@ static void destroy_inodecache(void)
 	kmem_cache_destroy(udf_inode_cachep);
 }
 
+struct mapping_metadata_bhs *udf_get_metadata_bhs(struct inode *inode)
+{
+	return &UDF_I(inode)->i_metadata_bhs;
+}
+
 /* Superblock operations */
 static const struct super_operations udf_sb_ops = {
 	.alloc_inode	= udf_alloc_inode,
diff --git a/fs/udf/symlink.c b/fs/udf/symlink.c
index fe03745d09b1..56c860a10b91 100644
--- a/fs/udf/symlink.c
+++ b/fs/udf/symlink.c
@@ -168,4 +168,5 @@ const struct address_space_operations udf_symlink_aops = {
 const struct inode_operations udf_symlink_inode_operations = {
 	.get_link	= page_get_link,
 	.getattr	= udf_symlink_getattr,
+	.get_metadata_bhs	= udf_get_metadata_bhs,
 };
diff --git a/fs/udf/udf_i.h b/fs/udf/udf_i.h
index 312b7c9ef10e..fdaa88c49c2b 100644
--- a/fs/udf/udf_i.h
+++ b/fs/udf/udf_i.h
@@ -50,6 +50,7 @@ struct udf_inode_info {
 	struct kernel_lb_addr	i_locStreamdir;
 	__u64			i_lenStreams;
 	struct rw_semaphore	i_data_sem;
+	struct mapping_metadata_bhs i_metadata_bhs;
 	struct udf_ext_cache cached_extent;
 	/* Spinlock for protecting extent cache */
 	spinlock_t i_extent_cache_lock;
diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h
index d159f20d61e8..db2b92217bf5 100644
--- a/fs/udf/udfdecl.h
+++ b/fs/udf/udfdecl.h
@@ -126,6 +126,7 @@ static inline void udf_updated_lvid(struct super_block *sb)
 extern u64 lvid_get_unique_id(struct super_block *sb);
 struct inode *udf_find_metadata_inode_efe(struct super_block *sb,
 					u32 meta_file_loc, u32 partition_num);
+struct mapping_metadata_bhs *udf_get_metadata_bhs(struct inode *inode);
 
 /* namei.c */
 static inline unsigned int udf_dir_entry_len(struct fileIdentDesc *cfi)
-- 
2.51.0