AcoSail/kernel_optimize_test
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ide: don't acquire queue_lock in ide_complete_pm_rq

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blk_mq_stop_hw_queues doesn't need any locking, and the ide
dev_flags field isn't protected by it either.

Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2018-11-16 09:10:05 +01:00 committed by Jens Axboe
parent b2101f655f
commit f04842734c
1 changed files with 0 additions and 3 deletions
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3
drivers/ide/ide-pm.c
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@ -201,7 +201,6 @@ void ide_complete_pm_rq(ide_drive_t *drive, struct request *rq)
{
struct request_queue *q = drive->queue;
struct ide_pm_state *pm = ide_req(rq)->special;
unsigned long flags;
ide_complete_power_step(drive, rq);
if (pm->pm_step != IDE_PM_COMPLETED)
@ -211,12 +210,10 @@ void ide_complete_pm_rq(ide_drive_t *drive, struct request *rq)
printk("%s: completing PM request, %s\n", drive->name,
(ide_req(rq)->type == ATA_PRIV_PM_SUSPEND) ? "suspend" : "resume");
#endif
spin_lock_irqsave(&q->queue_lock, flags);
if (ide_req(rq)->type == ATA_PRIV_PM_SUSPEND)
blk_mq_stop_hw_queues(q);
else
drive->dev_flags &= ~IDE_DFLAG_BLOCKED;
spin_unlock_irqrestore(&q->queue_lock, flags);
drive->hwif->rq = NULL;