btrfs: add kbps discard rate limit for async discard

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Provide the ability to rate limit based on kbps in addition to iops as
additional guides for the target discard rate. The delay used ends up
being max(kbps_delay, iops_delay).

Signed-off-by: Dennis Zhou <dennis@kernel.org>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Dennis Zhou 2020-01-02 16:26:36 -05:00 • committed by David Sterba

parent a230930084

commit e93591bb6e

3 changed files with 54 additions and 2 deletions

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2

fs/btrfs/ctree.h

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23

fs/btrfs/discard.c

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31

fs/btrfs/sysfs.c

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