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| author | Bart Van Assche <bvanassche@acm.org> | 2024-03-13 14:42:18 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-04-03 15:32:22 +0200 |
| commit | 3fd977ac6fe76abee57a12407fdc309c7c4a5951 (patch) | |
| tree | 31771daa6adf8357b2c36279be8a106fa43ba137 /security/selinux/hooks.c | |
| parent | eb791e51e6be2bc52050c2f0bf741b972ac9f41f (diff) | |
Revert "block/mq-deadline: use correct way to throttling write requests"
[ Upstream commit 256aab46e31683d76d45ccbedc287b4d3f3e322b ]
The code "max(1U, 3 * (1U << shift) / 4)" comes from the Kyber I/O
scheduler. The Kyber I/O scheduler maintains one internal queue per hwq
and hence derives its async_depth from the number of hwq tags. Using
this approach for the mq-deadline scheduler is wrong since the
mq-deadline scheduler maintains one internal queue for all hwqs
combined. Hence this revert.
Cc: stable@vger.kernel.org
Cc: Damien Le Moal <dlemoal@kernel.org>
Cc: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Cc: Zhiguo Niu <Zhiguo.Niu@unisoc.com>
Fixes: d47f9717e5cf ("block/mq-deadline: use correct way to throttling write requests")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20240313214218.1736147-1-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'security/selinux/hooks.c')
0 files changed, 0 insertions, 0 deletions