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authorJens Axboe <jens.axboe@oracle.com>2008-09-14 05:56:33 -0700
committerJens Axboe <jens.axboe@oracle.com>2008-10-09 08:56:17 +0200
commit581d4e28d9195aa8b2231383dbabc288988d615e (patch)
tree093bcac9a538ef67edcf91826f7532bdb88e6248 /block/blk-softirq.c
parent0a0d96b03a1f3bfd6bc3ea08008699e8e59fccd9 (diff)
downloadlinux-linaro-stable-581d4e28d9195aa8b2231383dbabc288988d615e.tar.gz
block: add fault injection mechanism for faking request timeouts
Only works for the generic request timer handling. Allows one to sporadically ignore request completions, thus exercising the timeout handling. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/blk-softirq.c')
-rw-r--r--block/blk-softirq.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/block/blk-softirq.c b/block/blk-softirq.c
index 7ab344afb16f..e660d26ca656 100644
--- a/block/blk-softirq.c
+++ b/block/blk-softirq.c
@@ -154,6 +154,8 @@ do_local:
**/
void blk_complete_request(struct request *req)
{
+ if (unlikely(blk_should_fake_timeout(req->q)))
+ return;
if (!blk_mark_rq_complete(req))
__blk_complete_request(req);
}