mmc: block: Add blk-mq support

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Define and use a blk-mq queue. Discards and flushes are processed
synchronously, but reads and writes asynchronously. In order to support
slow DMA unmapping, DMA unmapping is not done until after the next request
is started. That means the request is not completed until then. If there is
no next request then the completion is done by queued work.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>

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Adrian Hunter 2017-11-29 15:41:03 +02:00 • committed by Ulf Hansson

parent c3d53d0da6

commit 81196976ed

4 changed files with 808 additions and 31 deletions

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502

drivers/mmc/core/block.c

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9

drivers/mmc/core/block.h

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320

drivers/mmc/core/queue.c

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32

drivers/mmc/core/queue.h

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