md: the bitmap code needs to use blk_plug_device_unlocked()



It doesn't hold the queue lock, so it's both racey on the queue flags
and thus spews a warning.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

parent 6c5e0c4d

drivers/md/bitmap.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1234,7 +1234,7 @@ int bitmap_startwrite(struct bitmap *bitmap, sector_t offset, unsigned long sect
		case 0:
		bitmap_file_set_bit(bitmap, offset);
		bitmap_count_page(bitmap,offset, 1);
		blk_plug_device(bitmap->mddev->queue);
		blk_plug_device_unlocked(bitmap->mddev->queue);
		/* fall through */
		case 1:
		*bmc = 2;