[PATCH 5.14 676/849] NFS: Dont set NFS_INO_DATA_INVAL_DEFER and NFS_INO_INVALID_DATA

[Greg Kroah-Hartman]

From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>

[ Upstream commit 488796ec1e39fb9194cc8175f770823d40fbf0ed ]

NFS_INO_DATA_INVAL_DEFER and NFS_INO_INVALID_DATA should be considered
mutually exclusive.

Fixes: 1c341b777501 ("NFS: Add deferred cache invalidation for close-to-open consistency violations")
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Tested-by: Benjamin Coddington <bcodding@xxxxxxxxxx>
Reviewed-by: Benjamin Coddington <bcodding@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 fs/nfs/inode.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 6ea1bde33cb62..f9d3ad3acf114 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -210,10 +210,15 @@ void nfs_set_cache_invalid(struct inode *inode, unsigned long flags)
 		flags &= ~NFS_INO_INVALID_XATTR;
 	if (flags & NFS_INO_INVALID_DATA)
 		nfs_fscache_invalidate(inode);
-	if (inode->i_mapping->nrpages == 0)
-		flags &= ~(NFS_INO_INVALID_DATA|NFS_INO_DATA_INVAL_DEFER);
 	flags &= ~(NFS_INO_REVAL_PAGECACHE | NFS_INO_REVAL_FORCED);
+
 	nfsi->cache_validity |= flags;
+
+	if (inode->i_mapping->nrpages == 0)
+		nfsi->cache_validity &= ~(NFS_INO_INVALID_DATA |
+					  NFS_INO_DATA_INVAL_DEFER);
+	else if (nfsi->cache_validity & NFS_INO_INVALID_DATA)
+		nfsi->cache_validity &= ~NFS_INO_DATA_INVAL_DEFER;
 }
 EXPORT_SYMBOL_GPL(nfs_set_cache_invalid);
 
-- 
2.33.0