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[PATCH] dm: don't enable bouncing by default 

DM doesn't need to bounce bio's on its own, but the block layer defaults
to that in blk_queue_make_request(). The lower level drivers should
bounce ios themselves, that is what they need to do if not layered below
dm anyways.

Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jens Axboe 2006-01-10 10:48:02 +01:00 committed by Linus Torvalds
parent 00d6da9b4d
commit daef265f15
1 changed files with 1 additions and 0 deletions
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drivers/md/dm.c
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@ -768,6 +768,7 @@ static struct mapped_device *alloc_dev(unsigned int minor, int persistent)
md->queue->backing_dev_info.congested_fn = dm_any_congested;
md->queue->backing_dev_info.congested_data = md;
blk_queue_make_request(md->queue, dm_request);
blk_queue_bounce_limit(md->queue, BLK_BOUNCE_ANY);
md->queue->unplug_fn = dm_unplug_all;
md->queue->issue_flush_fn = dm_flush_all;