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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2009-06-09 05:47:10 +0200
committerJens Axboe <jens.axboe@oracle.com>2009-06-09 05:47:10 +0200
commitdbb66c4be020b01dc2f3d7c609ddb0e09d2c0af7 (patch)
treeb80ec96749fdc8f26a33496ee4593ddbcc58f6ed /block/blk-core.c
parent172124e220f1854acc99ee394671781b8b5e2120 (diff)
downloadlinux-2.6.34-ux500-dbb66c4be020b01dc2f3d7c609ddb0e09d2c0af7.tar.gz
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>
Diffstat (limited to 'block/blk-core.c')
-rw-r--r--block/blk-core.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index 7ae83a1e2ac..03c5a64b6cc 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);