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Add UNPLUG traces to all appropriate places

Browse source 
Added blk_unplug interface, allowing all invocations of unplugs to result
in a generated blktrace UNPLUG.

Signed-off-by: Alan D. Brunelle <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Alan D. Brunelle 2007-11-07 14:26:56 -05:00 • committed by Jens Axboe
commit 2ad8b1ef11
11 changed files with 26 additions and 27 deletions
Download patch file Download diff file Expand all files Collapse all files

3
drivers/md/bitmap.c
View file

@ -1207,8 +1207,7 @@ int bitmap_startwrite(struct bitmap *bitmap, sector_t offset, unsigned long sect
prepare_to_wait(&bitmap->overflow_wait, &__wait,
TASK_UNINTERRUPTIBLE);
spin_unlock_irq(&bitmap->lock);
bitmap->mddev->queue
->unplug_fn(bitmap->mddev->queue);
blk_unplug(bitmap->mddev->queue);
schedule();
finish_wait(&bitmap->overflow_wait, &__wait);
continue;

3
drivers/md/dm-table.c
View file

@ -1000,8 +1000,7 @@ void dm_table_unplug_all(struct dm_table *t)
struct dm_dev *dd = list_entry(d, struct dm_dev, list);
struct request_queue *q = bdev_get_queue(dd->bdev);
if (q->unplug_fn)
q->unplug_fn(q);
blk_unplug(q);
}
}

3
drivers/md/linear.c
View file

@ -87,8 +87,7 @@ static void linear_unplug(struct request_queue *q)
for (i=0; i < mddev->raid_disks; i++) {
struct request_queue *r_queue = bdev_get_queue(conf->disks[i].rdev->bdev);
if (r_queue->unplug_fn)
r_queue->unplug_fn(r_queue);
blk_unplug(r_queue);
}
}

4
drivers/md/md.c
View file

@ -5445,7 +5445,7 @@ void md_do_sync(mddev_t *mddev)
* about not overloading the IO subsystem. (things like an
* e2fsck being done on the RAID array should execute fast)
*/
mddev->queue->unplug_fn(mddev->queue);
blk_unplug(mddev->queue);
cond_resched();
currspeed = ((unsigned long)(io_sectors-mddev->resync_mark_cnt))/2
@ -5464,7 +5464,7 @@ void md_do_sync(mddev_t *mddev)
* this also signals 'finished resyncing' to md_stop
*/
out:
mddev->queue->unplug_fn(mddev->queue);
blk_unplug(mddev->queue);
wait_event(mddev->recovery_wait, !atomic_read(&mddev->recovery_active));

3
drivers/md/multipath.c
View file

@ -125,8 +125,7 @@ static void unplug_slaves(mddev_t *mddev)
atomic_inc(&rdev->nr_pending);
rcu_read_unlock();
if (r_queue->unplug_fn)
r_queue->unplug_fn(r_queue);
blk_unplug(r_queue);
rdev_dec_pending(rdev, mddev);
rcu_read_lock();

3
drivers/md/raid0.c
View file

@ -35,8 +35,7 @@ static void raid0_unplug(struct request_queue *q)
for (i=0; i<mddev->raid_disks; i++) {
struct request_queue *r_queue = bdev_get_queue(devlist[i]->bdev);
if (r_queue->unplug_fn)
r_queue->unplug_fn(r_queue);
blk_unplug(r_queue);
}
}

3
drivers/md/raid1.c
View file

@ -549,8 +549,7 @@ static void unplug_slaves(mddev_t *mddev)
atomic_inc(&rdev->nr_pending);
rcu_read_unlock();
if (r_queue->unplug_fn)
r_queue->unplug_fn(r_queue);
blk_unplug(r_queue);
rdev_dec_pending(rdev, mddev);
rcu_read_lock();

3
drivers/md/raid10.c
View file

@ -593,8 +593,7 @@ static void unplug_slaves(mddev_t *mddev)
atomic_inc(&rdev->nr_pending);
rcu_read_unlock();
if (r_queue->unplug_fn)
r_queue->unplug_fn(r_queue);
blk_unplug(r_queue);
rdev_dec_pending(rdev, mddev);
rcu_read_lock();

3
drivers/md/raid5.c
View file

@ -3186,8 +3186,7 @@ static void unplug_slaves(mddev_t *mddev)
atomic_inc(&rdev->nr_pending);
rcu_read_unlock();
if (r_queue->unplug_fn)
r_queue->unplug_fn(r_queue);
blk_unplug(r_queue);
rdev_dec_pending(rdev, mddev);
rcu_read_lock();