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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>
This commit is contained in:
Andre Noll 2009-06-18 08:46:47 +10:00 committed by NeilBrown
parent 0ba459d262
commit cdc2ae6d6a
2 changed files with 1 additions and 3 deletions
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2
drivers/md/raid5.c
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@ -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)

2
include/linux/raid/md_p.h
View File

@ -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 */