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xfs: do not flush data workqueues in xfs_flush_buftarg

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When we call xfs_flush_buftarg (generally from sync or umount) it already
is too late to flush the data workqueues, as I/O completion is signalled
for them and we are thus already done with the data we would flush here.

There are places where flushing them might be useful, but the current
sync interface doesn't give us that opportunity.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
This commit is contained in:
Christoph Hellwig 2011-10-10 16:52:53 +00:00 committed by Alex Elder
parent a9add83e5a
commit 5a93a064d2
1 changed files with 1 additions and 10 deletions
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11
fs/xfs/xfs_buf.c
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@ -1623,13 +1623,6 @@ xfs_buf_delwri_promote(
spin_unlock(&btp->bt_delwri_lock);
}
STATIC void
xfs_buf_runall_queues(
struct workqueue_struct *queue)
{
flush_workqueue(queue);
}
/*
* Move as many buffers as specified to the supplied list
* idicating if we skipped any buffers to prevent deadlocks.
@ -1752,9 +1745,7 @@ xfs_flush_buftarg(
LIST_HEAD(wait_list);
struct blk_plug plug;
xfs_buf_runall_queues(xfsconvertd_workqueue);
xfs_buf_runall_queues(xfsdatad_workqueue);
xfs_buf_runall_queues(xfslogd_workqueue);
flush_workqueue(xfslogd_workqueue);
set_bit(XBT_FORCE_FLUSH, &target->bt_flags);
pincount = xfs_buf_delwri_split(target, &tmp_list, 0);