Allow NFS to report the i_version in statx. Since the cost to fetch it
is relatively cheap, do it unconditionally and just set the flag if it
looks like it's valid.
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
---
fs/nfs/inode.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index b4e46b0ffa2d..43e23ec2a64d 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -829,6 +829,8 @@ static u32 nfs_get_valid_attrmask(struct inode *inode)
reply_mask |= STATX_UID | STATX_GID;
if (!(cache_validity & NFS_INO_INVALID_BLOCKS))
reply_mask |= STATX_BLOCKS;
+ if (!(cache_validity & NFS_INO_INVALID_CHANGE))
+ reply_mask |= STATX_CHANGE_ATTR;
return reply_mask;
}
@@ -847,7 +849,7 @@ int nfs_getattr(struct user_namespace *mnt_userns, const struct path *path,
request_mask &= STATX_TYPE | STATX_MODE | STATX_NLINK | STATX_UID |
STATX_GID | STATX_ATIME | STATX_MTIME | STATX_CTIME |
- STATX_INO | STATX_SIZE | STATX_BLOCKS;
+ STATX_INO | STATX_SIZE | STATX_BLOCKS | STATX_CHANGE_ATTR;
if ((query_flags & AT_STATX_DONT_SYNC) && !force_sync) {
if (readdirplus_enabled)
@@ -876,7 +878,7 @@ int nfs_getattr(struct user_namespace *mnt_userns, const struct path *path,
/* Is the user requesting attributes that might need revalidation? */
if (!(request_mask & (STATX_MODE|STATX_NLINK|STATX_ATIME|STATX_CTIME|
STATX_MTIME|STATX_UID|STATX_GID|
- STATX_SIZE|STATX_BLOCKS)))
+ STATX_SIZE|STATX_BLOCKS|STATX_CHANGE_ATTR)))
goto out_no_revalidate;
/* Check whether the cached attributes are stale */
@@ -914,6 +916,7 @@ int nfs_getattr(struct user_namespace *mnt_userns, const struct path *path,
generic_fillattr(&init_user_ns, inode, stat);
stat->ino = nfs_compat_user_ino64(NFS_FILEID(inode));
+ stat->change_attr = inode_peek_iversion_raw(inode);
if (S_ISDIR(inode->i_mode))
stat->blksize = NFS_SERVER(inode)->dtsize;
out:
--
2.37.2
