lkml.org 
[lkml]   [2018]   [Nov]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 4.19 020/361] block: make sure writesame bio is aligned with logical block size
    Date
    4.19-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Ming Lei <ming.lei@redhat.com>

    commit 34ffec60b27aa81d04e274e71e4c6ef740f75fc7 upstream.

    Obviously the created writesame bio has to be aligned with logical block
    size, and use bio_allowed_max_sectors() to retrieve this number.

    Cc: stable@vger.kernel.org
    Cc: Mike Snitzer <snitzer@redhat.com>
    Cc: Christoph Hellwig <hch@lst.de>
    Cc: Xiao Ni <xni@redhat.com>
    Cc: Mariusz Dabrowski <mariusz.dabrowski@intel.com>
    Fixes: b49a0871be31a745b2ef ("block: remove split code in blkdev_issue_{discard,write_same}")
    Tested-by: Rui Salvaterra <rsalvaterra@gmail.com>
    Signed-off-by: Ming Lei <ming.lei@redhat.com>
    Signed-off-by: Jens Axboe <axboe@kernel.dk>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    block/blk-lib.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/block/blk-lib.c
    +++ b/block/blk-lib.c
    @@ -161,7 +161,7 @@ static int __blkdev_issue_write_same(str
    return -EOPNOTSUPP;

    /* Ensure that max_write_same_sectors doesn't overflow bi_size */
    - max_write_same_sectors = UINT_MAX >> 9;
    + max_write_same_sectors = bio_allowed_max_sectors(q);

    while (nr_sects) {
    bio = next_bio(bio, 1, gfp_mask);

    \
     
     \ /
      Last update: 2018-11-12 01:20    [W:4.423 / U:0.008 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site