Messages in this thread Patch in this message | | | Date | Tue, 8 Sep 2009 09:34:16 +0900 | From | Minchan Kim <> | Subject | [PATCH] trace bio queueing trial only when it occurs |
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It got lost in LKML mail storm. I resend this. Wu, Could you review this patch, please?
== CUT_HERE ==
If BIO is discarded or cross over end of device, BIO queueing trial doesn't occur.
Let's trace it only when it happens.
Signed-off-by: Minchan Kim <minchan.kim@gmail.com> --- block/blk-core.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/block/blk-core.c b/block/blk-core.c index 5b59592..1a0cfd5 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1463,8 +1463,6 @@ static inline void __generic_make_request(struct bio *bio) if (old_sector != -1) trace_block_remap(q, bio, old_dev, old_sector);
- trace_block_bio_queue(q, bio); - old_sector = bio->bi_sector; old_dev = bio->bi_bdev->bd_dev;
@@ -1477,6 +1475,8 @@ static inline void __generic_make_request(struct bio *bio) goto end_io; }
+ trace_block_bio_queue(q, bio); + ret = q->make_request_fn(q, bio); } while (ret);
-- 1.6.4
-- Kind regards, Minchan Kim
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