block: adapt blk_mq_plug() to not plug for writes that require a zone lock

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The current implementation of blk_mq_plug() disables plugging for all
operations that involves a transfer to the device as we just check if
the last bit in op_is_write() function.

Modify blk_mq_plug() to disable plugging only for REQ_OP_WRITE and
REQ_OP_WRITE_ZEROS as they might require a zone lock.

Suggested-by: Christoph Hellwig <hch@lst.de>
Suggested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Pankaj Raghav <p.raghav@samsung.com>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20220929074745.103073-2-p.raghav@samsung.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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This commit is contained in:

Pankaj Raghav 2022-09-29 09:47:44 +02:00 • committed by Jens Axboe

parent dfdcbf1fc3

commit 8cafdb5ab9

3 changed files with 14 additions and 7 deletions

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3

block/blk-mq.h

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9

block/blk-zoned.c

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9

include/linux/blkdev.h

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