[md PATCH 06/10] md: teach sync_page_io about new_data_offset.
From: NeilBrown <hidden>
Date: 2012-04-03 05:53:01
Subsystem:
software raid (multiple disks) support, the rest · Maintainers:
Song Liu, Yu Kuai, Linus Torvalds
Some code in raid1 and raid10 use sync_page_io to read/write pages when responding to read errors. As we will shortly support changing data_offset for raid10, this function must understand new_data_offset. So add that understanding. Signed-off-by: NeilBrown <redacted> --- drivers/md/md.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 0db613d..8da63d1 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c@@ -886,6 +886,10 @@ int sync_page_io(struct md_rdev *rdev, sector_t sector, int size, rdev->meta_bdev : rdev->bdev; if (metadata_op) bio->bi_sector = sector + rdev->sb_start; + else if (rdev->mddev->reshape_position != MaxSector && + (rdev->mddev->reshape_backwards == + (sector >= rdev->mddev->reshape_position))) + bio->bi_sector = sector + rdev->new_data_offset; else bio->bi_sector = sector + rdev->data_offset; bio_add_page(bio, page, size, 0);