path: root/fs/ext4/namei.c
diff options
authorJeff Layton <jlayton@redhat.com>2018-01-29 06:41:30 -0500
committerJeff Layton <jlayton@redhat.com>2018-01-29 06:41:30 -0500
commitae5e165d855dd978a461b22175531b07f54fb61f (patch)
tree8b603c15aff71082d3d9e67b7eab089396349ce0 /fs/ext4/namei.c
parent7a11ac289c437cb06633620940b191a63dec1f4a (diff)
fs: new API for handling inode->i_version
Add a documentation blob that explains what the i_version field is, how it is expected to work, and how it is currently implemented by various filesystems. We already have inode_inc_iversion. Add several other functions for manipulating and accessing the i_version counter. For now, the implementation is trivial and basically works the way that all of the open-coded i_version accesses work today. Future patches will convert existing users of i_version to use the new API, and then convert the backend implementation to do things more efficiently. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/ext4/namei.c')
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 798b3ac680db..bcf0dff517be 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -34,6 +34,7 @@
#include <linux/quotaops.h>
#include <linux/buffer_head.h>
#include <linux/bio.h>
+#include <linux/iversion.h>
#include "ext4.h"
#include "ext4_jbd2.h"