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authorDan Williams <dan.j.williams@intel.com>2009-03-17 18:10:40 -0700
committerDan Williams <dan.j.williams@intel.com>2009-03-31 14:57:49 +1100
commit80c3a6ce4ba4470379b9e6a4d9bcd9d2ee26ae03 (patch)
treede88622f05a7e681ac7bff7714e8f2d8953b66ac /drivers/md/md.h
parent93ed05e2a56b5ee06c0100a169433b11c4aa5d0b (diff)
downloadlinux-80c3a6ce4ba4470379b9e6a4d9bcd9d2ee26ae03.tar.bz2
md: add 'size' as a personality method
In preparation for giving userspace control over ->array_sectors we need to be able to retrieve the 'default' size, and the 'anticipated' size when a reshape is requested. For personalities that do not reshape emit a warning if anything but the default size is requested. In the raid5 case we need to update ->previous_raid_disks to make the new 'default' size available. Reviewed-by: Andre Noll <maan@systemlinux.org> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/md/md.h')
-rw-r--r--drivers/md/md.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/md.h b/drivers/md/md.h
index 8034f62a9d28..d2c50da1ae7f 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -312,6 +312,7 @@ struct mdk_personality
int (*spare_active) (mddev_t *mddev);
sector_t (*sync_request)(mddev_t *mddev, sector_t sector_nr, int *skipped, int go_faster);
int (*resize) (mddev_t *mddev, sector_t sectors);
+ sector_t (*size) (mddev_t *mddev, sector_t sectors, int raid_disks);
int (*check_reshape) (mddev_t *mddev);
int (*start_reshape) (mddev_t *mddev);
int (*reconfig) (mddev_t *mddev, int layout, int chunk_size);