md/bitmap: clean up plugging calls.
1/ use md_unplug in bitmap.c as we will soon be using bitmaps under
arrays with no queue attached.
2/ Don't bother plugging the queue when we set a bit in the bitmap.
The reason for this was to encourage as many bits as possible to
get set before we unplug and write stuff out.
However every personality already plugs the queue after
bitmap_startwrite either directly (raid1/raid10) or be setting
STRIPE_BIT_DELAY which causes the queue to be plugged later
(raid5).
Signed-off-by: NeilBrown <neilb@suse.de>
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index 8af4d65..3f04699 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -1296,7 +1296,7 @@
prepare_to_wait(&bitmap->overflow_wait, &__wait,
TASK_UNINTERRUPTIBLE);
spin_unlock_irq(&bitmap->lock);
- blk_unplug(bitmap->mddev->queue);
+ md_unplug(bitmap->mddev);
schedule();
finish_wait(&bitmap->overflow_wait, &__wait);
continue;
@@ -1306,7 +1306,6 @@
case 0:
bitmap_file_set_bit(bitmap, offset);
bitmap_count_page(bitmap, offset, 1);
- blk_plug_device_unlocked(bitmap->mddev->queue);
/* fall through */
case 1:
*bmc = 2;