Support readwrite unified configuration, so we can more
easily configure the bps/iops of the cgroup.
Add readwrite_dynamic_ratio interface. Support anticipate ratio
via previous data to control readwrite block throttle dynamically.
Anticipate readwrite ratio based on dispatched bytes/iops in the
last slice. Considering read and write slice are not aligned and
able to trim orextent. Use the elapsed slice numbers to get an
approximate rate.
Tencent-internal-TAPDID: 878345747
Signed-off-by: Chunguang Xu <brookxu@tencent.com>
Signed-off-by: Haisu Wang <haisuwang@tencent.com>
Reviewed-by: Alex Shi <alexsshi@tencent.com>
Reviewed-by: Hongbo Li <herberthbli@tencent.com>
Use the new blk_opf_t type for arguments and variables that represent
request flags or a bitwise combination of a request operation and
request flags. Rename the function arguments and also a structure member
that hold a request operation and flags from 'rw' into 'opf'.
This patch does not change any functionality.
Cc: Christoph Hellwig <hch@lst.de>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Damien Le Moal <damien.lemoal@wdc.com>
Cc: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20220714180729.1065367-7-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Partition include/linux/blk-cgroup.h into two parts: one is public part,
the other is block layer private part.
Suggested by Christoph Hellwig.
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220211101149.2368042-4-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
blkg_rwstat is now only used by bfq-iosched and blk-throtl when on
cgroup1. Let's move it into its own files and gate it behind a config
option.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Haisu Wang