blk-mq: abstract tag allocation out into sbitmap library

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This is a generally useful data structure, so make it available to
anyone else who might want to use it. It's also a nice cleanup
separating the allocation logic from the rest of the tag handling logic.

The code is behind a new Kconfig option, CONFIG_SBITMAP, which is only
selected by CONFIG_BLOCK for now.

This should be a complete noop functionality-wise.

Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

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Omar Sandoval 2016-09-17 08:38:44 -06:00 • committed by Jens Axboe

parent 703fd1c0f1

commit 88459642cb

11 changed files with 789 additions and 476 deletions

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9

include/linux/blk-mq.h

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327

include/linux/sbitmap.h

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