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_is_zoned_write() will be introduced in the next patch in this
series.
Suggested-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Cc: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx>
Cc: Ming Lei <ming.lei@xxxxxxxxxx>
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
---
include/linux/blkdev.h | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index db24cf98ccfb..a4f85781060c 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_is_zoned_write(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_is_zoned_write(op);
}
static inline sector_t bdev_zone_sectors(struct block_device *bdev)
