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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2011-07-27 01:09:03 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-07-27 01:49:46 +0200 |
| commit | b2c9cd3793e5878e301ec2219785a7b8ca402ef1 (patch) | |
| tree | e0a8a447ea8c6d59c20a1e190e2c397bfcd46a49 /block | |
| parent | fail_page_alloc: simplify debugfs initialization (diff) | |
| download | linux-b2c9cd3793e5878e301ec2219785a7b8ca402ef1.tar.xz linux-b2c9cd3793e5878e301ec2219785a7b8ca402ef1.zip | |
fail_make_request: cleanup should_fail_request
This changes should_fail_request() to more usable wrapper function of
should_fail(). It can avoid putting #ifdef CONFIG_FAIL_MAKE_REQUEST in
the middle of a function.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-core.c | 26 |
1 files changed, 12 insertions, 14 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index f9255815a5bb..b850bedad229 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1361,14 +1361,9 @@ static int __init setup_fail_make_request(char *str) } __setup("fail_make_request=", setup_fail_make_request); -static int should_fail_request(struct bio *bio) +static bool should_fail_request(struct hd_struct *part, unsigned int bytes) { - struct hd_struct *part = bio->bi_bdev->bd_part; - - if (part_to_disk(part)->part0.make_it_fail || part->make_it_fail) - return should_fail(&fail_make_request, bio->bi_size); - - return 0; + return part->make_it_fail && should_fail(&fail_make_request, bytes); } static int __init fail_make_request_debugfs(void) @@ -1381,9 +1376,10 @@ late_initcall(fail_make_request_debugfs); #else /* CONFIG_FAIL_MAKE_REQUEST */ -static inline int should_fail_request(struct bio *bio) +static inline bool should_fail_request(struct hd_struct *part, + unsigned int bytes) { - return 0; + return false; } #endif /* CONFIG_FAIL_MAKE_REQUEST */ @@ -1466,6 +1462,7 @@ static inline void __generic_make_request(struct bio *bio) old_dev = 0; do { char b[BDEVNAME_SIZE]; + struct hd_struct *part; q = bdev_get_queue(bio->bi_bdev); if (unlikely(!q)) { @@ -1489,7 +1486,10 @@ static inline void __generic_make_request(struct bio *bio) if (unlikely(test_bit(QUEUE_FLAG_DEAD, &q->queue_flags))) goto end_io; - if (should_fail_request(bio)) + part = bio->bi_bdev->bd_part; + if (should_fail_request(part, bio->bi_size) || + should_fail_request(&part_to_disk(part)->part0, + bio->bi_size)) goto end_io; /* @@ -1704,11 +1704,9 @@ int blk_insert_cloned_request(struct request_queue *q, struct request *rq) if (blk_rq_check_limits(q, rq)) return -EIO; -#ifdef CONFIG_FAIL_MAKE_REQUEST - if (rq->rq_disk && rq->rq_disk->part0.make_it_fail && - should_fail(&fail_make_request, blk_rq_bytes(rq))) + if (rq->rq_disk && + should_fail_request(&rq->rq_disk->part0, blk_rq_bytes(rq))) return -EIO; -#endif spin_lock_irqsave(q->queue_lock, flags); |