[PATCH v3 17/21] md/raid10: split reshape bios before bitmap accounting

From: Yu Kuai <[email protected]>

Use the shared mddev_bio_split_at_reshape_offset() helper so RAID10
submits only one-side bios to llbitmap during reshape.

Signed-off-by: Yu Kuai <[email protected]>
---
 drivers/md/raid10.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index e50e4adee389..fd364a2e2fd9 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1911,6 +1911,12 @@ static bool raid10_make_request(struct mddev *mddev, struct bio *bio)
 		sectors = chunk_sects -
 			(bio->bi_iter.bi_sector &
 			 (chunk_sects - 1));
+
+	bio = mddev_bio_split_at_reshape_offset(mddev, bio, &sectors,
+						&conf->bio_split);
+	if (!bio)
+		return true;
+
 	if (!__make_request(mddev, bio, sectors))
 		md_write_end(mddev);
 
-- 
2.51.0