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blk-cgroup: separate out blkg_rwstat under CONFIG_BLK_CGROUP_RWSTAT

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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>
This commit is contained in:
Tejun Heo
2019-11-07 11:18:04 -08:00
committed by Jens Axboe
parent f733164829
commit 1d156646e0
9 changed files with 287 additions and 256 deletions
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block/blk-throttle.c
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@@ -12,6 +12,7 @@
#include <linux/blktrace_api.h>
#include <linux/blk-cgroup.h>
#include "blk.h"
#include "blk-cgroup-rwstat.h"
/* Max dispatch from a group in 1 round */
static int throtl_grp_quantum = 8;