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Message-Id: <1193173753.20475.54.camel@heimdal.trondhjem.org>
Date: Tue, 23 Oct 2007 17:09:13 -0400
From: Trond Myklebust <Trond.Myklebust@...app.com>
To: Linus Torvalds <torvalds@...l.org>
Cc: Chuck Lever <chuck.lever@...cle.com>, Neil Brown <neilb@...e.de>,
nfs@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: [PATCH]NFS: Fix for bug in handling of errors for O_DIRECT writes
From: Neil Brown <neilb@...e.de>
commit eda3cef8dd2b838 ensured that if a WRITE returns an error, then
data->res.verf->committed is not tested (as it is not initialised).
commit 60fa3f769f inadvertently reverted this while fixing other problems.
So move the test so that we never examine ->committed in an error
case, and fix a speeling error while we are there.
Cc: Chuck Lever <chuck.lever@...cle.com>
Signed-off-by: Neil Brown <neilb@...e.de>
Acked-by: Chuck Lever <chuck.lever@...cle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@...app.com>
---
Note: only compile tested - I haven't tried triggering the bug yet.
NeilBrown
### Diffstat output
./fs/nfs/direct.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff .prev/fs/nfs/direct.c ./fs/nfs/direct.c
--- .prev/fs/nfs/direct.c 2007-10-23 12:31:29.000000000 +1000
+++ ./fs/nfs/direct.c 2007-10-23 12:32:07.000000000 +1000
@@ -549,13 +549,13 @@ static void nfs_direct_write_result(stru
spin_lock(&dreq->lock);
- if (unlikely(dreq->error != 0))
- goto out_unlock;
if (unlikely(status < 0)) {
- /* An error has occured, so we should not commit */
+ /* An error has occurred, so we should not commit */
dreq->flags = 0;
dreq->error = status;
}
+ if (unlikely(dreq->error != 0))
+ goto out_unlock;
dreq->count += data->res.count;
-
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