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

Signed-off-by: Jan Kara <jack@suse.cz>
---
 fs/affs/affs.h    | 2 ++
 fs/affs/dir.c     | 1 +
 fs/affs/file.c    | 1 +
 fs/affs/super.c   | 6 ++++++
 fs/affs/symlink.c | 1 +
 5 files changed, 11 insertions(+)

diff --git a/fs/affs/affs.h b/fs/affs/affs.h
index ac4e9a02910b..a1eb400e1018 100644
--- a/fs/affs/affs.h
+++ b/fs/affs/affs.h
@@ -44,6 +44,7 @@ struct affs_inode_info {
 	struct mutex i_link_lock;		/* Protects internal inode access. */
 	struct mutex i_ext_lock;		/* Protects internal inode access. */
 #define i_hash_lock i_ext_lock
+	struct mapping_metadata_bhs i_metadata_bhs;
 	u32	 i_blkcnt;			/* block count */
 	u32	 i_extcnt;			/* extended block count */
 	u32	*i_lc;				/* linear cache of extended blocks */
@@ -151,6 +152,7 @@ extern bool	affs_nofilenametruncate(const struct dentry *dentry);
 extern int	affs_check_name(const unsigned char *name, int len,
 				bool notruncate);
 extern int	affs_copy_name(unsigned char *bstr, struct dentry *dentry);
+struct mapping_metadata_bhs *affs_get_metadata_bhs(struct inode *inode);
 
 /* bitmap. c */
 
diff --git a/fs/affs/dir.c b/fs/affs/dir.c
index 5c8d83387a39..6b0314c84972 100644
--- a/fs/affs/dir.c
+++ b/fs/affs/dir.c
@@ -72,6 +72,7 @@ const struct inode_operations affs_dir_inode_operations = {
 	.rmdir		= affs_rmdir,
 	.rename		= affs_rename2,
 	.setattr	= affs_notify_change,
+	.get_metadata_bhs = affs_get_metadata_bhs,
 };
 
 static int
diff --git a/fs/affs/file.c b/fs/affs/file.c
index 6c9258359ddb..4dbd9351eea0 100644
--- a/fs/affs/file.c
+++ b/fs/affs/file.c
@@ -1014,4 +1014,5 @@ const struct file_operations affs_file_operations = {
 
 const struct inode_operations affs_file_inode_operations = {
 	.setattr	= affs_notify_change,
+	.get_metadata_bhs = affs_get_metadata_bhs,
 };
diff --git a/fs/affs/super.c b/fs/affs/super.c
index 8451647f3fea..dff272df0636 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -108,6 +108,7 @@ static struct inode *affs_alloc_inode(struct super_block *sb)
 	i->i_lc = NULL;
 	i->i_ext_bh = NULL;
 	i->i_pa_cnt = 0;
+	mmb_init(&i->i_metadata_bhs);
 
 	return &i->vfs_inode;
 }
@@ -147,6 +148,11 @@ static void destroy_inodecache(void)
 	kmem_cache_destroy(affs_inode_cachep);
 }
 
+struct mapping_metadata_bhs *affs_get_metadata_bhs(struct inode *inode)
+{
+	return &AFFS_I(inode)->i_metadata_bhs;
+}
+
 static const struct super_operations affs_sops = {
 	.alloc_inode	= affs_alloc_inode,
 	.free_inode	= affs_free_inode,
diff --git a/fs/affs/symlink.c b/fs/affs/symlink.c
index 094aec8d17b8..68fa091bd377 100644
--- a/fs/affs/symlink.c
+++ b/fs/affs/symlink.c
@@ -72,4 +72,5 @@ const struct address_space_operations affs_symlink_aops = {
 const struct inode_operations affs_symlink_inode_operations = {
 	.get_link	= page_get_link,
 	.setattr	= affs_notify_change,
+	.get_metadata_bhs = affs_get_metadata_bhs,
 };
-- 
2.51.0