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* [PATCH v3 0/2] improve quiesce time for large amount of namespaces
@ 2020-07-26  0:22 Sagi Grimberg
  2020-07-26  0:23 ` [PATCH v3 1/2] blk-mq: add async quiesce interface Sagi Grimberg
  2020-07-26  0:23 ` [PATCH v3 2/2] nvme: improve quiesce time for large amount of namespaces Sagi Grimberg
  0 siblings, 2 replies; 19+ messages in thread
From: Sagi Grimberg @ 2020-07-26  0:22 UTC (permalink / raw)
  To: linux-nvme, Christoph Hellwig, Keith Busch, Jens Axboe
  Cc: linux-block, Chao Leng

This set attempts to improve the quiesce time when using a large set of
namespaces, which also improves I/O failover time in a multipath environment.

We improve for both non-blocking hctxs (e.g. pci, fc, rdma) and blocking
hctxs (e.g. tcp) by splitting queue auiesce to async call_(s)rcu and
async_wait to wait for it to complete.

Changes from v2:
- made blk_mq_quiesce_queue_async operate on both blocking and
  non-blocking hctxs.
- removed separation between blocking vs. non-blocking queues
- dropeed patch from Chao
- dropped nvme-rdma test patch

Changes from v1:
- trivial typo fixes

Sagi Grimberg (2):
  blk-mq: add async quiesce interface
  nvme: improve quiesce time for large amount of namespaces

 block/blk-mq.c           | 32 ++++++++++++++++++++++++++++++++
 drivers/nvme/host/core.c |  4 +++-
 include/linux/blk-mq.h   |  4 ++++
 3 files changed, 39 insertions(+), 1 deletion(-)

-- 
2.25.1


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^ permalink raw reply	[flat|nested] 19+ messages in thread

end of thread, other threads:[~2020-07-28  1:09 UTC | newest]

Thread overview: 19+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-07-26  0:22 [PATCH v3 0/2] improve quiesce time for large amount of namespaces Sagi Grimberg
2020-07-26  0:23 ` [PATCH v3 1/2] blk-mq: add async quiesce interface Sagi Grimberg
2020-07-26  9:31   ` Ming Lei
2020-07-26 16:27     ` Sagi Grimberg
2020-07-27  2:08       ` Ming Lei
2020-07-27  3:33         ` Chao Leng
2020-07-27  3:50           ` Ming Lei
2020-07-27  5:55             ` Chao Leng
2020-07-27  6:32               ` Ming Lei
2020-07-27 18:40                 ` Sagi Grimberg
2020-07-27 18:38             ` Sagi Grimberg
2020-07-27 18:36         ` Sagi Grimberg
2020-07-27 20:37           ` Jens Axboe
2020-07-27 21:00             ` Sagi Grimberg
2020-07-27 21:05               ` Jens Axboe
2020-07-27 21:21                 ` Keith Busch
2020-07-27 21:30                   ` Jens Axboe
2020-07-28  1:09               ` Ming Lei
2020-07-26  0:23 ` [PATCH v3 2/2] nvme: improve quiesce time for large amount of namespaces Sagi Grimberg

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