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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>
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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9
include/linux/blkdev.h
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@@ -1304,6 +1304,15 @@ static inline bool bdev_is_zoned(struct block_device *bdev)
return false;
}
static inline bool bdev_op_is_zoned_write(struct block_device *bdev,
blk_opf_t op)
{
if (!bdev_is_zoned(bdev))
return false;
return op == REQ_OP_WRITE || op == REQ_OP_WRITE_ZEROES;
}
static inline sector_t bdev_zone_sectors(struct block_device *bdev)
{
struct request_queue *q = bdev_get_queue(bdev);