static int __issue_discard_async(struct f2fs_sb_info *sbi,
		struct block_device *bdev, block_t blkstart, block_t blklen)
{
#ifdef CONFIG_BLK_DEV_ZONED
	if (f2fs_sb_mounted_blkzoned(sbi->sb) &&
				bdev_zoned_model(bdev) != BLK_ZONED_NONE)
		return __f2fs_issue_discard_zone(sbi, bdev, blkstart, blklen);
#endif
	return __queue_discard_cmd(sbi, bdev, blkstart, blklen);
}
static int __issue_discard_async(struct f2fs_sb_info *sbi,
		struct block_device *bdev, block_t blkstart, block_t blklen)
{
#ifdef CONFIG_BLK_DEV_ZONED
	if (f2fs_sb_mounted_blkzoned(sbi->sb) &&
				bdev_zoned_model(bdev) != BLK_ZONED_NONE)
		return __f2fs_issue_discard_zone(sbi, bdev, blkstart, blklen);
#endif
	return __queue_discard_cmd(sbi, bdev, blkstart, blklen);
}