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| author | Jens Axboe | 2008-09-14 14:56:33 +0200 |
|---|---|---|
| committer | Jens Axboe | 2008-10-09 08:56:17 +0200 |
| commit | 581d4e28d9195aa8b2231383dbabc288988d615e (patch) | |
| tree | 093bcac9a538ef67edcf91826f7532bdb88e6248 /block/blk.h | |
| parent | block: add bio_kmalloc() (diff) | |
| download | kernel-qcow2-linux-581d4e28d9195aa8b2231383dbabc288988d615e.tar.gz kernel-qcow2-linux-581d4e28d9195aa8b2231383dbabc288988d615e.tar.xz kernel-qcow2-linux-581d4e28d9195aa8b2231383dbabc288988d615e.zip | |
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.h')
| -rw-r--r-- | block/blk.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/block/blk.h b/block/blk.h index a4f4a50aefaa..e5c579769963 100644 --- a/block/blk.h +++ b/block/blk.h @@ -42,6 +42,18 @@ static inline void blk_clear_rq_complete(struct request *rq) clear_bit(REQ_ATOM_COMPLETE, &rq->atomic_flags); } +#ifdef CONFIG_FAIL_IO_TIMEOUT +int blk_should_fake_timeout(struct request_queue *); +ssize_t part_timeout_show(struct device *, struct device_attribute *, char *); +ssize_t part_timeout_store(struct device *, struct device_attribute *, + const char *, size_t); +#else +static inline int blk_should_fake_timeout(struct request_queue *q) +{ + return 0; +} +#endif + struct io_context *current_io_context(gfp_t gfp_flags, int node); int ll_back_merge_fn(struct request_queue *q, struct request *req, |