From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <axboe@kernel.dk>
Cc: Bart Van Assche <bvanassche@acm.org>,
Damien Le Moal <dlemoal@kernel.org>,
linux-block@vger.kernel.org
Subject: RFC: less special casing for flush requests
Date: Sun, 16 Apr 2023 22:09:23 +0200 [thread overview]
Message-ID: <20230416200930.29542-1-hch@lst.de> (raw)
Hi all,
inspired by Barts quest for less reording during requeues, this series
aims to limit the scope of requeues. This is mostly done by simply
sending down more than we currently do down the normal submission path
with the help of Bart's patch to allow requests that are in the flush
state machine to still be seen by the I/O schedulers.
Diffstat:
block/blk-flush.c | 115 +++++++++++++++++++++++++++----------------------
block/blk-mq-debugfs.c | 1
block/blk-mq-sched.c | 14 +++++
block/blk-mq-sched.h | 1
block/blk-mq.c | 68 ++++++++++------------------
block/blk-mq.h | 5 --
block/blk.h | 2
include/linux/blk-mq.h | 31 +++++--------
include/linux/blkdev.h | 1
9 files changed, 119 insertions(+), 119 deletions(-)
next reply other threads:[~2023-04-16 20:09 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-16 20:09 Christoph Hellwig [this message]
2023-04-16 20:09 ` [PATCH 1/7] blk-mq: factor out a blk_rq_init_flush helper Christoph Hellwig
2023-04-17 6:22 ` Damien Le Moal
2023-04-17 6:24 ` Christoph Hellwig
2023-04-16 20:09 ` [PATCH 2/7] blk-mq: reflow blk_insert_flush Christoph Hellwig
2023-04-17 6:29 ` Damien Le Moal
2023-04-16 20:09 ` [PATCH 3/7] blk-mq: defer to the normal submission path for non-flush flush commands Christoph Hellwig
2023-04-17 6:31 ` Damien Le Moal
2023-04-17 19:48 ` Bart Van Assche
2023-04-16 20:09 ` [PATCH 4/7] blk-mq: also use the I/O scheduler for requests from the flush state machine Christoph Hellwig
2023-04-17 6:34 ` Damien Le Moal
2023-04-16 20:09 ` [PATCH 5/7] blk-mq: defer to the normal submission path for post-flush requests Christoph Hellwig
2023-04-17 6:36 ` Damien Le Moal
2023-04-17 6:39 ` Christoph Hellwig
2023-04-16 20:09 ` [PATCH 6/7] blk-mq: do not do head insertations post-pre-flush commands Christoph Hellwig
2023-04-17 6:38 ` Damien Le Moal
2023-04-17 19:51 ` Bart Van Assche
2023-04-16 20:09 ` [PATCH 7/7] blk-mq: don't use the requeue list to queue flush commands Christoph Hellwig
2023-04-16 21:01 ` Bart Van Assche
2023-04-17 4:26 ` Christoph Hellwig
2023-04-17 6:46 ` Damien Le Moal
2023-04-19 12:37 ` kernel test robot
2023-04-19 17:34 ` kernel test robot
2023-05-16 0:08 ` RFC: less special casing for flush requests Bart Van Assche
2023-05-16 4:03 ` Christoph Hellwig
2023-05-18 5:57 ` Christoph Hellwig
-- strict thread matches above, loose matches on Subject: below --
2023-04-16 19:48 Christoph Hellwig
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