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| author | Elias Oltmanns <eo@nebensachen.de> | 2008-10-01 16:02:33 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-10-09 08:56:20 +0200 |
| commit | 336c3d8ce771608815b65bcfa27a17a83b297328 (patch) | |
| tree | 91841449cf24ee051ff1daefcb60a8fbefe2522a | |
| parent | c0ddffa84a7d12da9943a94d04dadbfb1883b904 (diff) | |
| download | linux-336c3d8ce771608815b65bcfa27a17a83b297328.tar.gz linux-336c3d8ce771608815b65bcfa27a17a83b297328.tar.bz2 linux-336c3d8ce771608815b65bcfa27a17a83b297328.zip | |
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.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index fa212348c4c9..c66333d8e48d 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); |