NFS: Fix two bugs in the O_DIRECT write code

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Do not flag an error if the COMMIT call fails and we decide to resend the
writes. Let the resend flag the error if it fails.

If a write has failed, then nfs_direct_write_result should not attempt to
send a commit. It should just exit asap and return the error to the user.

Signed-off-by: Trond Myklebust <[email protected]>
Cc: Chuck Lever <[email protected]>
---

 fs/nfs/direct.c |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index b1c98ea..2877744 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -432,10 +432,10 @@ static void nfs_direct_commit_result(struct rpc_task *task, void *calldata)
 	if (NFS_PROTO(data->inode)->commit_done(task, data) != 0)
 		return;
 	if (unlikely(task->tk_status < 0)) {
-		dreq->error = task->tk_status;
+		dprintk("NFS: %5u commit failed with error %d.\n",
+				task->tk_pid, task->tk_status);
 		dreq->flags = NFS_ODIRECT_RESCHED_WRITES;
-	}
-	if (memcmp(&dreq->verf, &data->verf, sizeof(data->verf))) {
+	} else if (memcmp(&dreq->verf, &data->verf, sizeof(data->verf))) {
 		dprintk("NFS: %5u commit verify failed\n", task->tk_pid);
 		dreq->flags = NFS_ODIRECT_RESCHED_WRITES;
 	}
@@ -531,9 +531,12 @@ static void nfs_direct_write_result(struct rpc_task *task, void *calldata)
 
 	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 */
+		dreq->flags = 0;
 		dreq->error = status;
-		goto out_unlock;
 	}
 
 	dreq->count += data->res.count;
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux