md: fix some comments.

1/ Raid5 has learned to take over also raid4 and raid6 arrays.
2/ new_chunk in mdp_superblock_1 is in sectors, not bytes.

Signed-off-by: NeilBrown <neilb@suse.de>

2 files changed, 1 insertions, 3 deletions

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 72e8a324dcfb..009344156751 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -5231,8 +5231,6 @@ static void *raid5_takeover(mddev_t *mddev)
          *  raid1 - if there are two drives.  We need to know the chunk size
          *  raid4 - trivial - just use a raid4 layout.
          *  raid6 - Providing it is a *_6 layout
-         *
-         * For now, just do raid1
          */
 
         if (mddev->level == 1)
diff --git a/include/linux/raid/md_p.h b/include/linux/raid/md_p.h
index 6ba830fa8538..ffa2efbbe382 100644
--- a/include/linux/raid/md_p.h
+++ b/include/linux/raid/md_p.h
@@ -232,7 +232,7 @@ struct mdp_superblock_1 {
         __le64  reshape_position;       /* next address in array-space for reshape */
         __le32  delta_disks;    /* change in number of raid_disks               */
         __le32  new_layout;     /* new layout                                   */
-        __le32  new_chunk;      /* new chunk size (bytes)                       */
+        __le32  new_chunk;      /* new chunk size (512byte sectors)             */
         __u8    pad1[128-124];  /* set to 0 when written */
 
         /* constant this-device information - 64 bytes */