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blk-mq: Exit queue on alloc failure
author
Keith Busch
<keith.busch@intel.com>
Sat, 20 Dec 2014 00:54:13 +0000
(17:54 -0700)
committer
Jens Axboe
<axboe@fb.com>
Sat, 20 Dec 2014 17:33:53 +0000
(10:33 -0700)
Fixes usage counter when a request could not be allocated.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
block/blk-mq.c
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diff --git
a/block/blk-mq.c
b/block/blk-mq.c
index
da1ab56
..
bfe0f1f
100644
(file)
--- a/
block/blk-mq.c
+++ b/
block/blk-mq.c
@@
-258,8
+258,10
@@
struct request *blk_mq_alloc_request(struct request_queue *q, int rw, gfp_t gfp,
ctx = alloc_data.ctx;
}
blk_mq_put_ctx(ctx);
- if (!rq)
+ if (!rq) {
+ blk_mq_queue_exit(q);
return ERR_PTR(-EWOULDBLOCK);
+ }
return rq;
}
EXPORT_SYMBOL(blk_mq_alloc_request);