md: support REQ_OP_WRITE_ZEROES

[mirror_ubuntu-eoan-kernel.git] / drivers / md / md.h

diff --git a/drivers/md/md.h b/drivers/md/md.h
index dde8ecb760c87113ba36d50c0d6867bc6e215f02..1e76d64ce1803be229477fd83887514980390dee 100644 (file)
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -709,4 +709,11 @@ static inline void mddev_check_writesame(struct mddev *mddev, struct bio *bio)
            !bdev_get_queue(bio->bi_bdev)->limits.max_write_same_sectors)
                mddev->queue->limits.max_write_same_sectors = 0;
 }
+
+static inline void mddev_check_write_zeroes(struct mddev *mddev, struct bio *bio)
+{
+       if (bio_op(bio) == REQ_OP_WRITE_ZEROES &&
+           !bdev_get_queue(bio->bi_bdev)->limits.max_write_zeroes_sectors)
+               mddev->queue->limits.max_write_zeroes_sectors = 0;
+}
 #endif /* _MD_MD_H */