From: Damien Le Moal <damien.lemoal@wdc.com>
To: linux-block@vger.kernel.org, Jens Axboe <axboe@kernel.dk>
Cc: Adam Manzanares <adam.manzanares@wdc.com>,
Alexander Viro <viro@zeniv.linux.org.uk>,
linux-fsdevel@vger.kernel.org
Subject: [PATCH 0/7] Improve I/O priority handling
Date: Mon, 19 Nov 2018 12:51:24 +0900 [thread overview]
Message-ID: <20181119035131.11255-1-damien.lemoal@wdc.com> (raw)
This small series based on for-4.21/block brings improvements to I/O priority
hanlding. The main fixes are in patches 5, 6 and 7. These fix BIO and request
I/O priority initialization for both the synchronous and asynchronous pathes.
Of note is that patch 3 is what I beleive a clear bug fix but can result in
userland applications behavior change since a different I/O priority values
will be returned for processes that have *not* executed ioprio_set(). This
needs careful review.
Damien Le Moal (7):
aio: Comment use of IOCB_FLAG_IOPRIO aio flag
block: Remove bio->bi_ioc
block: Fix get_task_ioprio() default return value
block: Introduce get_current_ioprio()
aio: Fix fallback I/O priority value
block: prevent merging of requests with different priorities
block: Initialize BIO I/O priority early
block/bio.c | 4 ----
block/blk-core.c | 12 +-----------
block/blk-merge.c | 14 ++++++++++++--
block/blk-mq-sched.c | 4 ++--
block/blk-mq-sched.h | 2 +-
block/blk-mq.c | 4 ++--
block/blk.h | 16 ----------------
block/ioprio.c | 2 +-
fs/aio.c | 2 +-
include/linux/blk_types.h | 3 +--
include/linux/fs.h | 2 +-
include/linux/ioprio.h | 13 +++++++++++++
include/uapi/linux/aio_abi.h | 2 ++
13 files changed, 37 insertions(+), 43 deletions(-)
--
2.19.1
next reply other threads:[~2018-11-19 3:51 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-19 3:51 Damien Le Moal [this message]
2018-11-19 3:51 ` [PATCH 1/7] aio: Comment use of IOCB_FLAG_IOPRIO aio flag Damien Le Moal
2018-11-19 8:12 ` Christoph Hellwig
2018-11-19 8:15 ` Johannes Thumshirn
2018-11-19 3:51 ` [PATCH 2/7] block: Remove bio->bi_ioc Damien Le Moal
2018-11-19 8:13 ` Christoph Hellwig
2018-11-19 8:16 ` Johannes Thumshirn
2018-11-19 19:07 ` Adam Manzanares
2018-11-20 17:21 ` Ming Lei
2018-11-20 17:31 ` Jens Axboe
2018-11-20 23:58 ` Damien Le Moal
2018-11-21 1:24 ` Ming Lei
2018-11-21 1:31 ` Damien Le Moal
2018-11-21 2:10 ` Jens Axboe
2018-11-21 2:14 ` Damien Le Moal
2018-11-21 2:45 ` Damien Le Moal
2018-11-21 2:48 ` Jens Axboe
2018-11-21 2:50 ` Damien Le Moal
2018-11-21 1:21 ` Ming Lei
2018-11-19 3:51 ` [PATCH 3/7] block: Fix get_task_ioprio() default return value Damien Le Moal
2018-11-19 8:16 ` Christoph Hellwig
2018-11-20 1:47 ` Damien Le Moal
2018-11-19 3:51 ` [PATCH 4/7] block: Introduce get_current_ioprio() Damien Le Moal
2018-11-19 8:17 ` Christoph Hellwig
2018-11-19 8:26 ` Johannes Thumshirn
2018-11-19 18:17 ` Adam Manzanares
2018-11-19 23:46 ` Damien Le Moal
2018-11-19 3:51 ` [PATCH 5/7] aio: Fix fallback I/O priority value Damien Le Moal
2018-11-19 8:18 ` Christoph Hellwig
2018-11-19 8:27 ` Johannes Thumshirn
2018-11-19 19:08 ` Adam Manzanares
2018-11-19 3:51 ` [PATCH 6/7] block: prevent merging of requests with different priorities Damien Le Moal
2018-11-19 8:19 ` Christoph Hellwig
2018-11-19 8:31 ` Johannes Thumshirn
2018-11-19 3:51 ` [PATCH 7/7] block: Initialize BIO I/O priority early Damien Le Moal
2018-11-19 8:19 ` Christoph Hellwig
2018-11-19 19:11 ` Adam Manzanares
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