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Date: Tue, 9 Jun 2009 10:57:46 +0900 From: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp> To: jens.axboe@...cle.com Cc: tj@...nel.org, giridhar.malavali@...gic.com, linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH] block: needs to set the residual length of a bidi request. This is against for-2.6.31. This should fix the following problem: http://marc.info/?l=linux-scsi&m=124449210813269&w=2 = From: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp> Subject: [PATCH] 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@....ntt.co.jp> --- block/blk-core.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/block/blk-core.c b/block/blk-core.c index 7ae83a1..03c5a64 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -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); -- 1.6.0.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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