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| author | Ming Lei <ming.lei@redhat.com> | 2017-06-06 18:22:08 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-06-18 23:24:48 +0300 |
| commit | 1d9e9bc6b56e1bb7e33e7e2e1b99d7088356c006 (patch) | |
| tree | 4a0929fa4e384718aabcc2180399b219f18f1615 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | 69e07c4adb8669fd77f3b59abdb436aca9f1bee9 (diff) | |
| download | linux-1d9e9bc6b56e1bb7e33e7e2e1b99d7088356c006.tar.xz | |
blk-mq: don't stop queue for quiescing
Queue can be started by other blk-mq APIs and can be used in
different cases, this limits uses of blk_mq_quiesce_queue()
if it is based on stopping queue, and make its usage very
difficult, especially users have to use the stop queue APIs
carefully for avoiding to break blk_mq_quiesce_queue().
We have applied the QUIESCED flag for draining and blocking
dispatch, so it isn't necessary to stop queue any more.
After stopping queue is removed, blk_mq_quiesce_queue() can
be used safely and easily, then users won't worry about queue
restarting during quiescing at all.
Reviewed-by: Bart Van Assche <Bart.VanAssche@sandisk.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions