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-rw-r--r--drivers/md/raid1.c8
-rw-r--r--drivers/md/raid6main.c10
2 files changed, 12 insertions, 6 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 2da9d3ba902..3066c587b53 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -953,9 +953,6 @@ static int raid1_add_disk(mddev_t *mddev, mdk_rdev_t *rdev)
int mirror = 0;
mirror_info_t *p;
- if (rdev->saved_raid_disk >= 0 &&
- conf->mirrors[rdev->saved_raid_disk].rdev == NULL)
- mirror = rdev->saved_raid_disk;
for (mirror=0; mirror < mddev->raid_disks; mirror++)
if ( !(p=conf->mirrors+mirror)->rdev) {
@@ -972,7 +969,10 @@ static int raid1_add_disk(mddev_t *mddev, mdk_rdev_t *rdev)
p->head_position = 0;
rdev->raid_disk = mirror;
found = 1;
- if (rdev->saved_raid_disk != mirror)
+ /* As all devices are equivalent, we don't need a full recovery
+ * if this was recently any drive of the array
+ */
+ if (rdev->saved_raid_disk < 0)
conf->fullsync = 1;
rcu_assign_pointer(p->rdev, rdev);
break;
diff --git a/drivers/md/raid6main.c b/drivers/md/raid6main.c
index 00da37848d0..0000d162d19 100644
--- a/drivers/md/raid6main.c
+++ b/drivers/md/raid6main.c
@@ -2158,9 +2158,15 @@ static int raid6_add_disk(mddev_t *mddev, mdk_rdev_t *rdev)
/* no point adding a device */
return 0;
/*
- * find the disk ...
+ * find the disk ... but prefer rdev->saved_raid_disk
+ * if possible.
*/
- for (disk=0; disk < mddev->raid_disks; disk++)
+ if (rdev->saved_raid_disk >= 0 &&
+ conf->disks[rdev->saved_raid_disk].rdev == NULL)
+ disk = rdev->saved_raid_disk;
+ else
+ disk = 0;
+ for ( ; disk < mddev->raid_disks; disk++)
if ((p=conf->disks + disk)->rdev == NULL) {
clear_bit(In_sync, &rdev->flags);
rdev->raid_disk = disk;