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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable

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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
  Btrfs: do some plugging in the submit_bio threads
This commit is contained in:
Linus Torvalds 2011-04-26 08:25:16 -07:00
commit cb49f57787
1 changed files with 10 additions and 0 deletions
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10
fs/btrfs/volumes.c
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@ -155,6 +155,15 @@ static noinline int run_scheduled_bios(struct btrfs_device *device)
unsigned long limit;
unsigned long last_waited = 0;
int force_reg = 0;
struct blk_plug plug;
/*
* this function runs all the bios we've collected for
* a particular device. We don't want to wander off to
* another device without first sending all of these down.
* So, setup a plug here and finish it off before we return
*/
blk_start_plug(&plug);
bdi = blk_get_backing_dev_info(device->bdev);
fs_info = device->dev_root->fs_info;
@ -294,6 +303,7 @@ loop_lock:
spin_unlock(&device->io_lock);
done:
blk_finish_plug(&plug);
return 0;
}