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linux-2.6-nfs-handle-rpc-error-properly.patch
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File linux-2.6-nfs-handle-rpc-error-properly.patch of Package kernel
Date: Mon, 02 Oct 2006 09:17:22 -0400 From: Steve Dickson <SteveD@redhat.com> Subject: [RHEL5/FC6] [PATCH] fsstress on nfs trigger xmon on rhel5 beta1 The attached upstream patch stop a known regression in the direct I/O path in NFS. I have verified and IBM has also verified that this patch does indeed fix the oops.. See bz: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=207040 steved. If the RPC call tanked, we should not be checking the return value of data->res.verf->committed, since it is unlikely to even be initialised. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> --- fs/nfs/direct.c | 12 +++++++----- 1 files changed, 7 insertions(+), 5 deletions(-) --- linux-2.6.18.i686/fs/nfs/direct.c.dio 2006-09-28 14:08:30.816760000 -0400 +++ linux-2.6.18.i686/fs/nfs/direct.c 2006-10-02 08:53:06.772120000 -0400 @@ -534,10 +534,12 @@ spin_lock(&dreq->lock); - if (likely(status >= 0)) - dreq->count += data->res.count; - else - dreq->error = task->tk_status; + if (unlikely(status < 0)) { + dreq->error = status; + goto out_unlock; + } + + dreq->count += data->res.count; if (data->res.verf->committed != NFS_FILE_SYNC) { switch (dreq->flags) { @@ -552,7 +554,7 @@ } } } - +out_unlock: spin_unlock(&dreq->lock); }
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