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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-03-19 17:02:01 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-03-19 17:02:01 -0700 |
| commit | 10ce3cc919f50c2043b41ca968b43c26a3672600 (patch) | |
| tree | ea409366a5208aced495bc0516a08b81fd43222e /drivers/md/raid1.h | |
| parent | 24e3e5ae1e4c2a3a32f5b1f96b4e3fd721806acd (diff) | |
| parent | 5c6a7a62c130afef3d61c1dee153012231ff5cd9 (diff) | |
Merge branch 'next' into for-linus
Diffstat (limited to 'drivers/md/raid1.h')
| -rw-r--r-- | drivers/md/raid1.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/md/raid1.h b/drivers/md/raid1.h index c732b6cce93..80ded139314 100644 --- a/drivers/md/raid1.h +++ b/drivers/md/raid1.h @@ -12,6 +12,9 @@ struct mirror_info { * pool was allocated for, so they know how much to allocate and free. * mddev->raid_disks cannot be used, as it can change while a pool is active * These two datums are stored in a kmalloced struct. + * The 'raid_disks' here is twice the raid_disks in r1conf. + * This allows space for each 'real' device can have a replacement in the + * second half of the array. */ struct pool_info { @@ -21,7 +24,9 @@ struct pool_info { struct r1conf { struct mddev *mddev; - struct mirror_info *mirrors; + struct mirror_info *mirrors; /* twice 'raid_disks' to + * allow for replacements. + */ int raid_disks; /* When choose the best device for a read (read_balance()) |