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-rw-r--r--drivers/md/raid10.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 4db34edfd87f..7f636283a1ba 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -2060,7 +2060,13 @@ static int run(mddev_t *mddev)
/*
* Ok, everything is just fine now
*/
- size = conf->stride * conf->raid_disks;
+ if (conf->far_offset) {
+ size = mddev->size >> (conf->chunk_shift-1);
+ size *= conf->raid_disks;
+ size <<= conf->chunk_shift;
+ sector_div(size, conf->far_copies);
+ } else
+ size = conf->stride * conf->raid_disks;
sector_div(size, conf->near_copies);
mddev->array_size = size/2;
mddev->resync_max_sectors = size;