block: Provide blk_mq_sched_get_icq()

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Currently we lookup ICQ only after the request is allocated. However BFQ
will want to decide how many scheduler tags it allows a given bfq queue
(effectively a process) to consume based on cgroup weight. So provide a
function blk_mq_sched_get_icq() so that BFQ can lookup ICQ earlier.

Acked-by: Paolo Valente <paolo.valente@linaro.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20211125133645.27483-1-jack@suse.cz
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Jan Kara 2021-11-25 14:36:34 +01:00 • committed by Jens Axboe

parent 639d353143

commit 790cf9c848

2 changed files with 16 additions and 11 deletions

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block/blk-mq-sched.c

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block/blk-mq-sched.h

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