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>

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 72e8a32..0093441 100644 (file)
--- 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 6ba830f..ffa2efb 100644 (file)
--- 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 */