block: simplify tag allocation policy selection

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Use a plain BLK_MQ_F_* flag to select the round robin tag selection
instead of overlaying an enum with just two possible values into the
flags space.

Doing so allows adding a BLK_MQ_F_MAX sentinel for simplified overflow
checking in the messy debugfs helpers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20250106083531.799976-5-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Christoph Hellwig 2025-01-06 09:35:11 +01:00 • committed by Jens Axboe

parent e7602bb4f3

commit ce32496ec1

14 changed files with 29 additions and 55 deletions

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22

include/linux/blk-mq.h

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4

include/linux/libata.h

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6

include/scsi/scsi_host.h

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