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authorNeil Brown <neilb@notabene.brown>2008-06-28 00:31:33 +0200
committerNeil Brown <neilb@notabene.brown>2008-06-28 00:31:33 +0200
commit199050ea1ff2270174ee525b73bc4c3323098897 (patch)
treeb2a7851511b2ddb943b9ff7ce7c8a96c3ac2a8bb /drivers/md/raid1.c
parentSupport adding a spare to a live md array with external metadata. (diff)
downloadlinux-199050ea1ff2270174ee525b73bc4c3323098897.tar.xz
linux-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/raid1.c')
-rw-r--r--drivers/md/raid1.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index d32fc559ff05..f05d5983efb6 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1100,7 +1100,7 @@ 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;
@@ -1124,7 +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
*/
@@ -1135,7 +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)