block: Document the role of the two attribute groups
It is nontrivial to derive the role of the two attribute groups in source file block/blk-sysfs.c. Hence add a comment that explains their roles. See also commit 6d85ebf9 ("blk-sysfs: add a new attr_group for blk_mq"). Cc: Christoph Hellwig <hch@lst.de> Cc: Yu Kuai <yukuai3@huawei.com> Signed-off-by:Bart Van Assche <bvanassche@acm.org> Link: https://lore.kernel.org/r/20231128194019.72762-1-bvanassche@acm.org Signed-off-by:
Jens Axboe <axboe@kernel.dk>
parent
67d995e0
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