1. 19 6月, 2017 3 次提交
  2. 27 5月, 2017 1 次提交
  3. 21 4月, 2017 1 次提交
  4. 15 4月, 2017 1 次提交
  5. 08 4月, 2017 2 次提交
  6. 07 4月, 2017 3 次提交
  7. 24 2月, 2017 1 次提交
    • O
      blk-mq-sched: separate mark hctx and queue restart operations · d38d3515
      Omar Sandoval 提交于
      In blk_mq_sched_dispatch_requests(), we call blk_mq_sched_mark_restart()
      after we dispatch requests left over on our hardware queue dispatch
      list. This is so we'll go back and dispatch requests from the scheduler.
      In this case, it's only necessary to restart the hardware queue that we
      are running; there's no reason to run other hardware queues just because
      we are using shared tags.
      
      So, split out blk_mq_sched_mark_restart() into two operations, one for
      just the hardware queue and one for the whole request queue. The core
      code only needs the hctx variant, but I/O schedulers will want to use
      both.
      
      This also requires adjusting blk_mq_sched_restart_queues() to always
      check the queue restart flag, not just when using shared tags.
      Signed-off-by: NOmar Sandoval <osandov@fb.com>
      Signed-off-by: NJens Axboe <axboe@fb.com>
      d38d3515
  8. 11 2月, 2017 1 次提交
  9. 04 2月, 2017 1 次提交
    • J
      block: free merged request in the caller · e4d750c9
      Jens Axboe 提交于
      If we end up doing a request-to-request merge when we have completed
      a bio-to-request merge, we free the request from deep down in that
      path. For blk-mq-sched, the merge path has to hold the appropriate
      lock, but we don't need it for freeing the request. And in fact
      holding the lock is problematic, since we are now calling the
      mq sched put_rq_private() hook with the lock held. Other call paths
      do not hold this lock.
      
      Fix this inconsistency by ensuring that the caller frees a merged
      request. Then we can do it outside of the lock, making it both more
      efficient and fixing the blk-mq-sched problem of invoking parts of
      the scheduler with an unknown lock state.
      Reported-by: NPaolo Valente <paolo.valente@linaro.org>
      Signed-off-by: NJens Axboe <axboe@fb.com>
      Reviewed-by: NOmar Sandoval <osandov@fb.com>
      e4d750c9
  10. 03 2月, 2017 1 次提交
  11. 28 1月, 2017 1 次提交
  12. 27 1月, 2017 1 次提交
  13. 18 1月, 2017 2 次提交