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authorChristoph Hellwig <hch@lst.de>2017-04-05 19:21:03 +0200
committerJens Axboe <axboe@fb.com>2017-04-08 11:25:38 -0600
commit3deff1a70d5901342f460f8cc36e5d0c5d51c319 (patch)
treea74cc58c2a3105a9505028c87f8991378979e33c /drivers/md/md.h
parent02d261034f1c90ac8b052406bd7b18d2564b0b3c (diff)
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md: support REQ_OP_WRITE_ZEROES
Copy & paste from the REQ_OP_WRITE_SAME code. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/md/md.h')
-rw-r--r--drivers/md/md.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/md/md.h b/drivers/md/md.h
index dde8ecb760c8..1e76d64ce180 100644
--- 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 */