[RFC PATCH 2/4] nfs: report the change attribute if requested
From: Jeff Layton <jlayton@kernel.org>
Date: 2022-08-05 18:35:52
Also in:
ceph-devel, linux-btrfs, linux-fsdevel, linux-nfs, linux-xfs
Subsystem:
filesystems (vfs and infrastructure), nfs, sunrpc, and lockd clients, the rest · Maintainers:
Alexander Viro, Christian Brauner, Trond Myklebust, Anna Schumaker, Linus Torvalds
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@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