[RFC PATCH 2/4] nfs: report the change attribute if requested
Jeff Layton
jlayton at kernel.org
Fri Aug 5 11:35:41 PDT 2022
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 at kernel.org>
---
fs/nfs/inode.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index b4e46b0ffa2d..8e0e7ecf6429 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_CHGATTR;
return reply_mask;
}
@@ -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->chgattr = inode_peek_iversion_raw(inode);
if (S_ISDIR(inode->i_mode))
stat->blksize = NFS_SERVER(inode)->dtsize;
out:
--
2.37.1
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