Commit f2b8f3ce authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

block: move blk_steal_bios to blk-mq.c 



Keep all the request based code together.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarJohannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20211117061404.331732-8-hch@lst.de


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 52fdbbcc

block/blk-core.c

+0 −21
Original line number Diff line number Diff line
@@ -1167,27 +1167,6 @@ void disk_end_io_acct(struct gendisk *disk, unsigned int op, 
}

EXPORT_SYMBOL(disk_end_io_acct);



/*

 * Steal bios from a request and add them to a bio list.

 * The request must not have been partially completed before.

 */

void blk_steal_bios(struct bio_list *list, struct request *rq)

{

	if (rq->bio) {

		if (list->tail)

			list->tail->bi_next = rq->bio;

		else

			list->head = rq->bio;

		list->tail = rq->biotail;



		rq->bio = NULL;

		rq->biotail = NULL;

	}



	rq->__data_len = 0;

}

EXPORT_SYMBOL_GPL(blk_steal_bios);



/**

 * blk_lld_busy - Check if underlying low-level drivers of a device are busy

 * @q : the queue of the device being checked

block/blk-mq.c

+21 −0
Original line number Diff line number Diff line
@@ -3014,6 +3014,27 @@ int blk_rq_prep_clone(struct request *rq, struct request *rq_src, 
}

EXPORT_SYMBOL_GPL(blk_rq_prep_clone);



/*

 * Steal bios from a request and add them to a bio list.

 * The request must not have been partially completed before.

 */

void blk_steal_bios(struct bio_list *list, struct request *rq)

{

	if (rq->bio) {

		if (list->tail)

			list->tail->bi_next = rq->bio;

		else

			list->head = rq->bio;

		list->tail = rq->biotail;



		rq->bio = NULL;

		rq->biotail = NULL;

	}



	rq->__data_len = 0;

}

EXPORT_SYMBOL_GPL(blk_steal_bios);



static size_t order_to_size(unsigned int order)

{

	return (size_t)PAGE_SIZE << order;