This is a note to let you know that I've just added the patch titled
NFS: fix nfs_fetch_iversion()
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
nfs-fix-nfs_fetch_iversion.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 93c843c093f4a2a3385e19e18e733a469a0439e1
Author: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Date: Wed Mar 24 15:32:21 2021 -0400
NFS: fix nfs_fetch_iversion()
[ Upstream commit b876d708316bf9b6b9678eb2beb289b93cfe6369 ]
The change attribute is always set by all NFS client versions so get rid
of the open-coded version.
Fixes: 3cc55f4434b4 ("nfs: use change attribute for NFS re-exports")
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/nfs/export.c b/fs/nfs/export.c
index f2b34cfe286c2..b347e3ce0cc8e 100644
--- a/fs/nfs/export.c
+++ b/fs/nfs/export.c
@@ -171,17 +171,10 @@ static u64 nfs_fetch_iversion(struct inode *inode)
{
struct nfs_server *server = NFS_SERVER(inode);
- /* Is this the right call?: */
- nfs_revalidate_inode(server, inode);
- /*
- * Also, note we're ignoring any returned error. That seems to be
- * the practice for cache consistency information elsewhere in
- * the server, but I'm not sure why.
- */
- if (server->nfs_client->rpc_ops->version >= 4)
- return inode_peek_iversion_raw(inode);
- else
- return time_to_chattr(&inode->i_ctime);
+ if (nfs_check_cache_invalid(inode, NFS_INO_INVALID_CHANGE |
+ NFS_INO_REVAL_PAGECACHE))
+ __nfs_revalidate_inode(server, inode);
+ return inode_peek_iversion_raw(inode);
}
const struct export_operations nfs_export_ops = {
