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Commit 832b52a1 authored by Richard Weinberger's avatar Richard Weinberger
Browse files

UBI: Block: Explain usage of blk_rq_map_sg() 



Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
parent 9aa272b4

drivers/mtd/ubi/block.c

+6 −0
Original line number Diff line number Diff line
@@ -301,6 +301,12 @@ static void ubiblock_do_work(struct work_struct *work) 
	struct request *req = blk_mq_rq_from_pdu(pdu);



	blk_mq_start_request(req);



	/*

	 * It is safe to ignore the return value of blk_rq_map_sg() because

	 * the number of sg entries is limited to UBI_MAX_SG_COUNT

	 * and ubi_read_sg() will check that limit.

	 */

	blk_rq_map_sg(req->q, req, pdu->usgl.sg);



	ret = ubiblock_read(pdu);