From 233fca36bb439eadcad28500b5139fed7c64a0ae Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Wed, 14 Apr 2010 17:02:09 +1000 Subject: [PATCH] md: Relax checks on ->max_disks when external metadata handling is used. When metadata is being managed by user-space, md doesn't know what the maximum number of devices allowed in an array is so ->max_disks is 0. In this case we should allow any (+ve) number of disks. Signed-off-by: NeilBrown --- drivers/md/md.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/md/md.c b/drivers/md/md.c index 766be8701281..46bdf4b38be8 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -2801,8 +2801,9 @@ static void analyze_sbs(mddev_t * mddev) i = 0; rdev_for_each(rdev, tmp, mddev) { - if (rdev->desc_nr >= mddev->max_disks || - i > mddev->max_disks) { + if (mddev->max_disks && + (rdev->desc_nr >= mddev->max_disks || + i > mddev->max_disks)) { printk(KERN_WARNING "md: %s: %s: only %d devices permitted\n", mdname(mddev), bdevname(rdev->bdev, b), @@ -5406,7 +5407,7 @@ static int update_raid_disks(mddev_t *mddev, int raid_disks) if (mddev->pers->check_reshape == NULL) return -EINVAL; if (raid_disks <= 0 || - raid_disks >= mddev->max_disks) + (mddev->max_disks && raid_disks >= mddev->max_disks)) return -EINVAL; if (mddev->sync_thread || mddev->reshape_position != MaxSector) return -EBUSY; -- GitLab