lkml.org 
[lkml]   [2006]   [Oct]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Date
    Subject[PATCH 006 of 6] md: Enable bypassing cache for reads.

    Call the chunk_aligned_read where appropriate.

    cc: "Raz Ben-Jehuda(caro)" <raziebe@gmail.com>
    Signed-off-by: Neil Brown <neilb@suse.de>

    ### Diffstat output
    ./drivers/md/raid5.c | 5 +++++
    1 file changed, 5 insertions(+)

    diff .prev/drivers/md/raid5.c ./drivers/md/raid5.c
    --- .prev/drivers/md/raid5.c 2006-10-31 16:42:30.000000000 +1100
    +++ ./drivers/md/raid5.c 2006-10-31 16:47:53.000000000 +1100
    @@ -2798,6 +2798,11 @@ static int make_request(request_queue_t
    disk_stat_inc(mddev->gendisk, ios[rw]);
    disk_stat_add(mddev->gendisk, sectors[rw], bio_sectors(bi));

    + if ( bio_data_dir(bi) == READ &&
    + mddev->reshape_position == MaxSector &&
    + chunk_aligned_read(q,bi))
    + return 0;
    +
    logical_sector = bi->bi_sector & ~((sector_t)STRIPE_SECTORS-1);
    last_sector = bi->bi_sector + (bi->bi_size>>9);
    bi->bi_next = NULL;
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/
    \
     
     \ /
      Last update: 2006-10-31 07:05    [W:0.020 / U:0.596 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site