From: Bart Van Assche <bvanassche@acm.org>
To: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
Bart Van Assche <bvanassche@acm.org>
Subject: [PATCH v4 0/8] Improve changing the number of hardware queues
Date: Mon, 9 Mar 2020 21:26:15 -0700 [thread overview]
Message-ID: <20200310042623.20779-1-bvanassche@acm.org> (raw)
Hi Jens,
These patches are what I came up with while analyzing syzbot and blktests
complaints related to dynamically changing the number of hardware queues.
Please consider these patches for the upstream kernel.
Thanks,
Bart.
Changes compared to v3:
- Added more Reviewed-by tags.
Changes compared to v2:
- Changed patch 2/8 such that .nr_queues is only set if nr_maps == 1.
Changes compared to v1:
- Reworked patch 2/8 as requested by Ming.
- Added three new null_blk patches.
Bart Van Assche (8):
blk-mq: Fix a comment in include/linux/blk-mq.h
blk-mq: Keep set->nr_hw_queues and set->map[].nr_queues in sync
blk-mq: Fix a recently introduced regression in
blk_mq_realloc_hw_ctxs()
null_blk: Suppress an UBSAN complaint triggered when setting
'memory_backed'
null_blk: Fix changing the number of hardware queues
null_blk: Fix the null_add_dev() error path
null_blk: Handle null_add_dev() failures properly
null_blk: Add support for init_hctx() fault injection
block/blk-mq.c | 9 ++-
drivers/block/null_blk_main.c | 124 +++++++++++++++++++++++-----------
include/linux/blk-mq.h | 5 +-
3 files changed, 97 insertions(+), 41 deletions(-)
next reply other threads:[~2020-03-10 4:26 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-10 4:26 Bart Van Assche [this message]
2020-03-10 4:26 ` [PATCH v4 1/8] blk-mq: Fix a comment in include/linux/blk-mq.h Bart Van Assche
2020-03-10 4:26 ` [PATCH v4 2/8] blk-mq: Keep set->nr_hw_queues and set->map[].nr_queues in sync Bart Van Assche
2020-03-10 4:26 ` [PATCH v4 3/8] blk-mq: Fix a recently introduced regression in blk_mq_realloc_hw_ctxs() Bart Van Assche
2020-03-10 4:26 ` [PATCH v4 4/8] null_blk: Suppress an UBSAN complaint triggered when setting 'memory_backed' Bart Van Assche
2020-03-10 4:26 ` [PATCH v4 5/8] null_blk: Fix changing the number of hardware queues Bart Van Assche
2020-03-10 4:26 ` [PATCH v4 6/8] null_blk: Fix the null_add_dev() error path Bart Van Assche
2020-03-10 4:26 ` [PATCH v4 7/8] null_blk: Handle null_add_dev() failures properly Bart Van Assche
2020-03-10 4:26 ` [PATCH v4 8/8] null_blk: Add support for init_hctx() fault injection Bart Van Assche
2020-03-10 13:10 ` [PATCH v4 0/8] Improve changing the number of hardware queues Jens Axboe
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