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556910e392
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> |
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| admin-guide | ||
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| features | ||
| filesystems | ||
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| .gitignore | ||
| arch.rst | ||
| asm-annotations.rst | ||
| atomic_bitops.txt | ||
| atomic_t.txt | ||
| Changes | ||
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| conf.py | ||
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| docutils.conf | ||
| dontdiff | ||
| index.rst | ||
| Kconfig | ||
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| Makefile | ||
| memory-barriers.txt | ||
| SubmittingPatches | ||
| watch_queue.rst | ||
