lkml.org 
[lkml]   [2009]   [Sep]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    Subject[PATCH] trace bio queueing trial only when it occurs

    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


    \
     
     \ /
      Last update: 2009-09-08 02:37    [W:2.393 / U:0.028 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site