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block: set up rq->rq_disk properly for flush requests
author
FUJITA Tomonori
<fujita.tomonori@lab.ntt.co.jp>
Fri, 9 Jul 2010 00:38:25 +0000
(09:38 +0900)
committer
Jens Axboe
<jaxboe@fusionio.com>
Sat, 7 Aug 2010 16:52:41 +0000
(18:52 +0200)
q->bar_rq.rq_disk is NULL. Use the rq_disk of the original request
instead.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
block/blk-barrier.c
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diff --git
a/block/blk-barrier.c
b/block/blk-barrier.c
index
d95a144
..
f0faefc
100644
(file)
--- a/
block/blk-barrier.c
+++ b/
block/blk-barrier.c
@@
-136,7
+136,7
@@
static void queue_flush(struct request_queue *q, unsigned which)
blk_rq_init(q, rq);
rq->cmd_type = REQ_TYPE_FS;
rq->cmd_flags = REQ_HARDBARRIER | REQ_FLUSH;
- rq->rq_disk = q->
bar_rq.
rq_disk;
+ rq->rq_disk = q->
orig_bar_rq->
rq_disk;
rq->end_io = end_io;
elv_insert(q, rq, ELEVATOR_INSERT_FRONT);