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block: handle blk_pm_resume_request() requests in blk_execute_rq_nowait() 

For blk_pm_resume_request() requests (which are used only by IDE subsystem
currently) the queue is stopped so we need to call ->request_fn explicitly.

Thanks to:
- Rafael for reporting/bisecting the bug
- Borislav/Rafael for testing the fix

This is a preparation for converting IDE to use blk_execute_rq().

Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Borislav Petkov <petkovbb@gmail.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-07-15 21:21:43 +02:00
parent 64ea1b4ab7
commit 9a2d43b756
1 changed files with 3 additions and 0 deletions
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3
block/blk-exec.c
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@ -58,6 +58,9 @@ void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk,
spin_lock_irq(q->queue_lock); spin_lock_irq(q->queue_lock);
__elv_add_request(q, rq, where, 1); __elv_add_request(q, rq, where, 1);
__generic_unplug_device(q); __generic_unplug_device(q);
/* the queue is stopped so it won't be plugged+unplugged */
if (blk_pm_resume_request(rq))
q->request_fn(q);
spin_unlock_irq(q->queue_lock); spin_unlock_irq(q->queue_lock);
} }
EXPORT_SYMBOL_GPL(blk_execute_rq_nowait); EXPORT_SYMBOL_GPL(blk_execute_rq_nowait);