Commit a3707982 authored by Bart Van Assche's avatar Bart Van Assche Committed by Jens Axboe
Browse files

block: Introduce op_needs_zoned_write_locking() 



Introduce a helper function for checking whether write serialization is
required if the operation will be sent to a zoned device. A second caller
for op_needs_zoned_write_locking() will be introduced in the next patch
in this series.

Suggested-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Cc: Damien Le Moal <dlemoal@kernel.org>
Cc: Ming Lei <ming.lei@redhat.com>
Signed-off-by: default avatarBart Van Assche <bvanassche@acm.org>
Reviewed-by: default avatarDamien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20230517174230.897144-5-bvanassche@acm.org


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 3ddbe2a7

include/linux/blkdev.h

+7 −4
Original line number Diff line number Diff line
@@ -1281,13 +1281,16 @@ static inline unsigned int bdev_zone_no(struct block_device *bdev, sector_t sec) 
	return disk_zone_no(bdev->bd_disk, sec);

}



/* Whether write serialization is required for @op on zoned devices. */

static inline bool op_needs_zoned_write_locking(enum req_op op)

{

	return op == REQ_OP_WRITE || op == REQ_OP_WRITE_ZEROES;

}



static inline bool bdev_op_is_zoned_write(struct block_device *bdev,

					  enum req_op op)

{

	if (!bdev_is_zoned(bdev))

		return false;



	return op == REQ_OP_WRITE || op == REQ_OP_WRITE_ZEROES;

	return bdev_is_zoned(bdev) && op_needs_zoned_write_locking(op);

}



static inline sector_t bdev_zone_sectors(struct block_device *bdev)