Message ID | 20230517174230.897144-5-bvanassche@acm.org (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | mq-deadline: Improve support for zoned block devices | expand |
On 5/18/23 02:42, Bart Van Assche wrote: > 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>
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index db24cf98ccfb..3952c52d6cd1 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -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)