AcoSail/kernel_optimize_test
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ide: use queue lock instead of ide_lock when possible

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This is just a preparation for future changes and there should be no
functional changes caused by this patch since ide_lock is currently
also used as queue lock.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-12-29 20:27:31 +01:00
parent 3c8a2cce47
commit 6ea52226ca
2 changed files with 18 additions and 15 deletions
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14
drivers/ide/ide-cd.c
View File

@ -424,16 +424,17 @@ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
if (time_after(jiffies, info->write_timeout))
do_end_request = 1;
else {
struct request_queue *q = drive->queue;
unsigned long flags;
/*
* take a breather relying on the unplug
* timer to kick us again
*/
spin_lock_irqsave(&ide_lock, flags);
blk_plug_device(drive->queue);
spin_unlock_irqrestore(&ide_lock,
flags);
spin_lock_irqsave(q->queue_lock, flags);
blk_plug_device(q);
spin_unlock_irqrestore(q->queue_lock, flags);
return 1;
}
}
@ -502,11 +503,12 @@ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
end_request:
if (stat & ATA_ERR) {
struct request_queue *q = drive->queue;
unsigned long flags;
spin_lock_irqsave(&ide_lock, flags);
spin_lock_irqsave(q->queue_lock, flags);
blkdev_dequeue_request(rq);
spin_unlock_irqrestore(&ide_lock, flags);
spin_unlock_irqrestore(q->queue_lock, flags);
hwgroup->rq = NULL;

19
drivers/ide/ide-io.c
View File

@ -247,20 +247,21 @@ EXPORT_SYMBOL_GPL(ide_end_dequeued_request);
*/
static void ide_complete_pm_request (ide_drive_t *drive, struct request *rq)
{
struct request_queue *q = drive->queue;
unsigned long flags;
#ifdef DEBUG_PM
printk("%s: completing PM request, %s\n", drive->name,
blk_pm_suspend_request(rq) ? "suspend" : "resume");
#endif
spin_lock_irqsave(&ide_lock, flags);
spin_lock_irqsave(q->queue_lock, flags);
if (blk_pm_suspend_request(rq)) {
blk_stop_queue(drive->queue);
blk_stop_queue(q);
} else {
drive->dev_flags &= ~IDE_DFLAG_BLOCKED;
blk_start_queue(drive->queue);
blk_start_queue(q);
}
spin_unlock_irqrestore(&ide_lock, flags);
spin_unlock_irqrestore(q->queue_lock, flags);
drive->hwif->hwgroup->rq = NULL;
@ -1469,16 +1470,16 @@ irqreturn_t ide_intr (int irq, void *dev_id)
void ide_do_drive_cmd(ide_drive_t *drive, struct request *rq)
{
ide_hwgroup_t *hwgroup = drive->hwif->hwgroup;
struct request_queue *q = drive->queue;
unsigned long flags;
hwgroup->rq = NULL;
spin_lock_irqsave(&ide_lock, flags);
__elv_add_request(drive->queue, rq, ELEVATOR_INSERT_FRONT, 0);
blk_start_queueing(drive->queue);
spin_unlock_irqrestore(&ide_lock, flags);
spin_lock_irqsave(q->queue_lock, flags);
__elv_add_request(q, rq, ELEVATOR_INSERT_FRONT, 0);
blk_start_queueing(q);
spin_unlock_irqrestore(q->queue_lock, flags);
}
EXPORT_SYMBOL(ide_do_drive_cmd);
void ide_pktcmd_tf_load(ide_drive_t *drive, u32 tf_flags, u16 bcount, u8 dma)