• Shaohua Li's avatar
    blk-throttle: cap discard request size · ea0ea2bc
    Shaohua Li authored
    discard request usually is very big and easily use all bandwidth budget
    of a cgroup. discard request size doesn't really mean the size of data
    written, so it doesn't make sense to account it into bandwidth budget.
    Jens pointed out treating the size 0 doesn't make sense too, because
    discard request does have cost. But it's not easy to find the actual
    cost. This patch simply makes the size one sector.
    Signed-off-by: default avatarShaohua Li <shli@fb.com>
    Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
    ea0ea2bc
blk-throttle.c 67.8 KB