blk-cgroup: pass blkg_rwstat structures by reference

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Returning a structure generates rather bad code, so switch to passing
by reference.  Also don't require the structure to be zeroed and add
to the 0-initialized counters, but actually set the counters to the
calculated value.

Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Christoph Hellwig 2019-06-06 12:26:20 +02:00 • committed by Jens Axboe

parent 239eeb0857

commit 5d0b6e48cb

3 changed files with 32 additions and 28 deletions

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15

block/bfq-cgroup.c

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31

block/blk-cgroup.c

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14

include/linux/blk-cgroup.h

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