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Commit e3335de9 authored by Jens Axboe's avatar Jens Axboe
Browse files

block: blk_cleanup_queue() should call blk_sync_queue() 



When a driver calls blk_cleanup_queue(), the device should be fully idle.
However, the block layer may have pending plugging timers and the IO
schedulers may have pending work in the work queues. So quisce the device
by waiting for the timer and flushing the work queues.

Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent 9246b5f0

block/blk-core.c

+8 −0
Original line number Diff line number Diff line
@@ -436,6 +436,14 @@ void blk_put_queue(struct request_queue *q) 


void blk_cleanup_queue(struct request_queue *q)

{

	/*

	 * We know we have process context here, so we can be a little

	 * cautious and ensure that pending block actions on this device

	 * are done before moving on. Going into this function, we should

	 * not have processes doing IO to this device.

	 */

	blk_sync_queue(q);



	mutex_lock(&q->sysfs_lock);

	queue_flag_set_unlocked(QUEUE_FLAG_DEAD, q);

	mutex_unlock(&q->sysfs_lock);