Commit dbb66c4b authored Jun 09, 2009 by FUJITA Tomonori Committed by Jens Axboe Jun 09, 2009

block: needs to set the residual length of a bidi request



Tejun's "block: set rq->resid_len to blk_rq_bytes() on issue" patch
seems to be incomplete; It doesn't set rq->resid_len to blk_rq_bytes()
for a bidi request (req->next_rq). As a result, all bidi users are
broken.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

parent 172124e2

block/blk-core.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -1846,6 +1846,9 @@ void blk_start_request(struct request *req)
		* resid_len to full count and add the timeout handler.
		*/
		req->resid_len = blk_rq_bytes(req);
		if (unlikely(blk_bidi_rq(req)))
		req->next_rq->resid_len = blk_rq_bytes(req->next_rq);

		blk_add_timer(req);
		}
		EXPORT_SYMBOL(blk_start_request);

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