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| author | Mike Snitzer <snitzer@redhat.com> | 2016-09-09 19:24:57 -0400 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2016-09-14 13:56:38 -0400 |
| commit | a8ac51e4ab97765838ae6a07d6ff7f7bfaaa0ea3 (patch) | |
| tree | 1bc9e863ee44b4991b9c467659503f681bb4398e /tools/perf/scripts/python/bin/stackcollapse-report | |
| parent | dm: convert wait loops to use autoremove_wake_function() (diff) | |
| download | linux-a8ac51e4ab97765838ae6a07d6ff7f7bfaaa0ea3.tar.gz linux-a8ac51e4ab97765838ae6a07d6ff7f7bfaaa0ea3.zip | |
dm rq: add DM_MAPIO_DELAY_REQUEUE to delay requeue of blk-mq requests
Otherwise blk-mq will immediately dispatch requests that are requeued
via a BLK_MQ_RQ_QUEUE_BUSY return from blk_mq_ops .queue_rq.
Delayed requeue is implemented using blk_mq_delay_kick_requeue_list()
with a delay of 5 secs. In the context of DM multipath (all paths down)
it doesn't make any sense to requeue more quickly.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-report')
0 files changed, 0 insertions, 0 deletions