From 199050ea1ff2270174ee525b73bc4c3323098897 Mon Sep 17 00:00:00 2001 From: Neil Brown Date: Sat, 28 Jun 2008 08:31:33 +1000 Subject: rationalise return value for ->hot_add_disk method. For all array types but linear, ->hot_add_disk returns 1 on success, 0 on failure. For linear, it returns 0 on success and -errno on failure. This doesn't cause a functional problem because the ->hot_add_disk function of linear is used quite differently to the others. However it is confusing. So convert all to return 0 for success or -errno on failure and fix call sites to match. Signed-off-by: Neil Brown --- drivers/md/multipath.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers/md/multipath.c') diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c index 4a1d714c048e..541cbe3414bd 100644 --- a/drivers/md/multipath.c +++ b/drivers/md/multipath.c @@ -281,7 +281,7 @@ static int multipath_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) { multipath_conf_t *conf = mddev->private; struct request_queue *q; - int found = 0; + int err = -EEXIST; int path; struct multipath_info *p; int first = 0; @@ -312,11 +312,13 @@ static int multipath_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) rdev->raid_disk = path; set_bit(In_sync, &rdev->flags); rcu_assign_pointer(p->rdev, rdev); - found = 1; + err = 0; + break; } print_multipath_conf(conf); - return found; + + return err; } static int multipath_remove_disk(mddev_t *mddev, int number) -- cgit v1.2.2