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Message-Id: <20210319121745.440078590@linuxfoundation.org>
Date: Fri, 19 Mar 2021 13:19:07 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, "J. Bruce Fields" <bfields@...hat.com>,
Chuck Lever <chuck.lever@...cle.com>
Subject: [PATCH 5.10 10/13] Revert "nfsd4: remove check_conflicting_opens warning"
From: J. Bruce Fields <bfields@...hat.com>
commit 4aa5e002034f0701c3335379fd6c22d7f3338cce upstream.
This reverts commit 50747dd5e47b "nfsd4: remove check_conflicting_opens
warning", as a prerequisite for reverting 94415b06eb8a, which has a
serious bug.
Cc: stable@...r.kernel.org
Signed-off-by: J. Bruce Fields <bfields@...hat.com>
Signed-off-by: Chuck Lever <chuck.lever@...cle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
fs/nfsd/nfs4state.c | 1 +
1 file changed, 1 insertion(+)
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -4957,6 +4957,7 @@ static int nfsd4_check_conflicting_opens
writes--;
if (fp->fi_fds[O_RDWR])
writes--;
+ WARN_ON_ONCE(writes < 0);
if (writes > 0)
return -EAGAIN;
spin_lock(&fp->fi_lock);
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