diff options
Diffstat (limited to 'drivers/md/raid1.c')
| -rw-r--r-- | drivers/md/raid1.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index c610b947218..f05d5983efb 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1100,11 +1100,16 @@ static int raid1_spare_active(mddev_t *mddev) static int raid1_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) { conf_t *conf = mddev->private; - int found = 0; + int err = -EEXIST; int mirror = 0; mirror_info_t *p; + int first = 0; + int last = mddev->raid_disks - 1; - for (mirror=0; mirror < mddev->raid_disks; mirror++) + if (rdev->raid_disk >= 0) + first = last = rdev->raid_disk; + + for (mirror = first; mirror <= last; mirror++) if ( !(p=conf->mirrors+mirror)->rdev) { blk_queue_stack_limits(mddev->queue, @@ -1119,7 +1124,7 @@ static int raid1_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) p->head_position = 0; rdev->raid_disk = mirror; - found = 1; + err = 0; /* As all devices are equivalent, we don't need a full recovery * if this was recently any drive of the array */ @@ -1130,7 +1135,7 @@ static int raid1_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) } print_conf(conf); - return found; + return err; } static int raid1_remove_disk(mddev_t *mddev, int number) |