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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>
This commit is contained in:
Christoph Hellwig 2010-03-12 10:59:40 +00:00 committed by Alex Elder
parent df308bcfec
commit 8c38366f99
2 changed files with 6 additions and 12 deletions
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17
fs/xfs/linux-2.6/xfs_buf.c
View File

@ -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;
}

1
fs/xfs/linux-2.6/xfs_sync.c
View File

@ -372,7 +372,6 @@ xfs_sync_fsdata(
if (XFS_BUF_ISPINNED(bp))
xfs_log_force(mp, 0);
XFS_BUF_UNASYNC(bp);
return xfs_bwrite(mp, bp);
}