xfs: enforce synchronous writes in xfs_bwrite

xfs_bwrite is used with the intention of synchronously writing out
buffers, but currently it does not actually clear the async flag if
that's left from previous writes but instead implements async
behaviour if it finds it.  Remove the code handling asynchronous
writes as we've got rid of those entirely outside of the log and
delwri buffers, and make sure that we clear the async and read flags
before writing the buffer.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>

1 files changed, 6 insertions, 11 deletions

diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index f7ecc44cbbd3..f01de3c55c43 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -1007,25 +1007,20 @@ xfs_bwrite(
         struct xfs_mount        *mp,
         struct xfs_buf          *bp)
 {
-        int                     iowait = (bp->b_flags & XBF_ASYNC) == 0;
-        int                     error = 0;
+        int                     error;
 
         bp->b_strat = xfs_bdstrat_cb;
         bp->b_mount = mp;
         bp->b_flags |= XBF_WRITE;
-        if (!iowait)
-                bp->b_flags |= _XBF_RUN_QUEUES;
+        bp->b_flags &= ~(XBF_ASYNC | XBF_READ);
 
         xfs_buf_delwri_dequeue(bp);
         xfs_buf_iostrategy(bp);
 
-        if (iowait) {
-                error = xfs_buf_iowait(bp);
-                if (error)
-                        xfs_force_shutdown(mp, SHUTDOWN_META_IO_ERROR);
-                xfs_buf_relse(bp);
-        }
-
+        error = xfs_buf_iowait(bp);
+        if (error)
+                xfs_force_shutdown(mp, SHUTDOWN_META_IO_ERROR);
+        xfs_buf_relse(bp);
         return error;
 }