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| author | Neil Brown <neilb@notabene.brown> | 2008-06-28 08:31:33 +1000 |
|---|---|---|
| committer | Neil Brown <neilb@notabene.brown> | 2008-06-28 08:31:33 +1000 |
| commit | 199050ea1ff2270174ee525b73bc4c3323098897 (patch) | |
| tree | b2a7851511b2ddb943b9ff7ce7c8a96c3ac2a8bb /drivers/md/raid10.c | |
| parent | 6c2fce2ef6b4821c21b5c42c7207cb9cf8c87eda (diff) | |
| download | lwn-199050ea1ff2270174ee525b73bc4c3323098897.tar.gz lwn-199050ea1ff2270174ee525b73bc4c3323098897.zip | |
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 <neilb@suse.de>
Diffstat (limited to 'drivers/md/raid10.c')
| -rw-r--r-- | drivers/md/raid10.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 50ad8d2ae0e8..df08a9fa3a1f 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1113,7 +1113,7 @@ static int raid10_spare_active(mddev_t *mddev) static int raid10_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) { conf_t *conf = mddev->private; - int found = 0; + int err = -EEXIST; int mirror; mirror_info_t *p; int first = 0; @@ -1123,9 +1123,9 @@ static int raid10_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) /* only hot-add to in-sync arrays, as recovery is * very different from resync */ - return 0; + return -EBUSY; if (!enough(conf)) - return 0; + return -EINVAL; if (rdev->raid_disk) first = last = rdev->raid_disk; @@ -1151,7 +1151,7 @@ static int raid10_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) p->head_position = 0; rdev->raid_disk = mirror; - found = 1; + err = 0; if (rdev->saved_raid_disk != mirror) conf->fullsync = 1; rcu_assign_pointer(p->rdev, rdev); @@ -1159,7 +1159,7 @@ static int raid10_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) } print_conf(conf); - return found; + return err; } static int raid10_remove_disk(mddev_t *mddev, int number) |