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From:   trondmy@kernel.org
To:     linux-nfs@vger.kernel.org
Subject: [PATCH 1/5] NFS: Don't set NFS_INO_DATA_INVAL_DEFER and NFS_INO_INVALID_DATA
Date:   Wed, 29 Sep 2021 09:49:40 -0400
Message-Id: <20210929134944.632844-1-trondmy@kernel.org>
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From: Trond Myklebust <trond.myklebust@hammerspace.com>

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@hammerspace.com>
---
 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 0f092ccb0ca1..dcb885b7ad73 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);
 
-- 
2.31.1