[PATCH] md: make 'repair' actually work for raid1

When 'repair' finds a block that is different one the various parts of the
mirror.  it is meant to write a chosen good version to the others.  However it
currently writes out the original data to each.  The memcpy to make all the
data the same is missing.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 164b25dca101..ab74d40cac98 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1266,6 +1266,11 @@ static void sync_request_write(mddev_t *mddev, r1bio_t *r1_bio)
                                         sbio->bi_sector = r1_bio->sector +
                                                 conf->mirrors[i].rdev->data_offset;
                                         sbio->bi_bdev = conf->mirrors[i].rdev->bdev;
+                                        for (j = 0; j < vcnt ; j++)
+                                                memcpy(page_address(sbio->bi_io_vec[j].bv_page),
+                                                       page_address(pbio->bi_io_vec[j].bv_page),
+                                                       PAGE_SIZE);
+
                                 }
                         }
         }