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block: Introduce op_needs_zoned_write_locking()

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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: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Damien Le Moal <dlemoal@kernel.org>
Cc: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20230517174230.897144-5-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Bart Van Assche 2023-05-17 10:42:22 -07:00 committed by Jens Axboe
parent 3ddbe2a7e0
commit a370798201
1 changed files with 7 additions and 4 deletions
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11
include/linux/blkdev.h
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@ -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)