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Commit 9ced0b95 authored by Jens Axboe's avatar Jens Axboe
Browse files

ide: ensure that we re-run the queue handler 



The conversion to blk_delay_queue() missed parts of IDE.
Add a blk_delay_queue() to ensure that the request handler
gets reinvoked when it needs to.

Note that in all but one place the old plug re-run delay of
3 msecs is used, even though it probably could be shorter
for performance reasons in some of those cases.

Reported-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: default avatarJens Axboe <jaxboe@fusionio.com>
parent 40471856

drivers/ide/ide-io.c

+11 −1
Original line number Diff line number Diff line
@@ -440,6 +440,7 @@ void do_ide_request(struct request_queue *q) 
	struct ide_host *host = hwif->host;

	struct request	*rq = NULL;

	ide_startstop_t	startstop;

	unsigned long queue_run_ms = 3; /* old plug delay */



	spin_unlock_irq(q->queue_lock);
@@ -459,6 +460,9 @@ void do_ide_request(struct request_queue *q) 
		prev_port = hwif->host->cur_port;

		if (drive->dev_flags & IDE_DFLAG_SLEEPING &&

		    time_after(drive->sleep, jiffies)) {

			unsigned long left = jiffies - drive->sleep;



			queue_run_ms = jiffies_to_msecs(left + 1);

			ide_unlock_port(hwif);

			goto plug_device;

		}
@@ -547,8 +551,10 @@ void do_ide_request(struct request_queue *q) 
plug_device_2:

	spin_lock_irq(q->queue_lock);



	if (rq)

	if (rq) {

		blk_requeue_request(q, rq);

		blk_delay_queue(q, queue_run_ms);

	}

}



void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq)
@@ -562,6 +568,10 @@ void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq) 
		blk_requeue_request(q, rq);



	spin_unlock_irqrestore(q->queue_lock, flags);



	/* Use 3ms as that was the old plug delay */

	if (rq)

		blk_delay_queue(q, 3);

}



static int drive_is_ready(ide_drive_t *drive)