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| author | Bart Van Assche <bvanassche@acm.org> | 2021-06-17 17:44:44 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-06-21 15:03:40 -0600 |
| commit | 556910e39249d55e23deaec479f49e7d85bc0d24 (patch) | |
| tree | a62be8dec496a444ab8e691e406ee33609939246 /block/blk-cgroup.c | |
| parent | fb44023e70224c3bd9eb949bd3ab66876bd14c56 (diff) | |
| download | linux-556910e39249d55e23deaec479f49e7d85bc0d24.tar.gz | |
block: Introduce the ioprio rq-qos policy
Introduce an rq-qos policy that assigns an I/O priority to requests based on blk-cgroup configuration settings. This policy has the following advantages over the ioprio_set() system call: - This policy is cgroup based so it has all the advantages of cgroups. - While ioprio_set() does not affect page cache writeback I/O, this rq-qos controller affects page cache writeback I/O for filesystems that support assiociating a cgroup with writeback I/O. See also Documentation/admin-guide/cgroup-v2.rst. Cc: Damien Le Moal <damien.lemoal@wdc.com> Cc: Hannes Reinecke <hare@suse.de> Cc: Christoph Hellwig <hch@lst.de> Cc: Ming Lei <ming.lei@redhat.com> Cc: Johannes Thumshirn <johannes.thumshirn@wdc.com> Cc: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Link: https://lore.kernel.org/r/20210618004456.7280-5-bvanassche@acm.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-cgroup.c')
| -rw-r--r-- | block/blk-cgroup.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 3b0f6efaa2b6..7b06a5fa3cac 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -31,6 +31,7 @@ #include <linux/tracehook.h> #include <linux/psi.h> #include "blk.h" +#include "blk-ioprio.h" /* * blkcg_pol_mutex protects blkcg_policy[] and policy [de]activation. @@ -1187,6 +1188,10 @@ int blkcg_init_queue(struct request_queue *q) if (ret) goto err_destroy_all; + ret = blk_ioprio_init(q); + if (ret) + goto err_destroy_all; + ret = blk_throtl_init(q); if (ret) goto err_destroy_all; |