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authorElias Oltmanns <eo@nebensachen.de>2008-10-01 16:02:33 +0200
committerJens Axboe <jens.axboe@oracle.com>2008-10-09 08:56:20 +0200
commit336c3d8ce771608815b65bcfa27a17a83b297328 (patch)
tree91841449cf24ee051ff1daefcb60a8fbefe2522a
parentc0ddffa84a7d12da9943a94d04dadbfb1883b904 (diff)
downloadconfigs-336c3d8ce771608815b65bcfa27a17a83b297328.tar.gz
block: Fix blk_start_queueing() to not kick a stopped queue
blk_start_queueing() should act like the generic queue unplugging and kicking and ignore a stopped queue. Such a queue may not be run until after a call to blk_start_queue(). Signed-off-by: Elias Oltmanns <eo@nebensachen.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
-rw-r--r--block/blk-core.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index fa212348c4c..c66333d8e48 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -890,9 +890,11 @@ EXPORT_SYMBOL(blk_get_request);
*/
void blk_start_queueing(struct request_queue *q)
{
- if (!blk_queue_plugged(q))
+ if (!blk_queue_plugged(q)) {
+ if (unlikely(blk_queue_stopped(q)))
+ return;
q->request_fn(q);
- else
+ } else
__generic_unplug_device(q);
}
EXPORT_SYMBOL(blk_start_queueing);