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authorMark Fasheh <mfasheh@suse.de>2014-07-17 12:39:04 -0700
committerChris Mason <clm@fb.com>2014-08-15 07:43:16 -0700
commitf90e579c2b391979630b3343de0be65ab1b478ce (patch)
treef62a838f21e8b592796893e9998cc53310fea172 /fs
parent1152651a081720ef6a8c76bb7da676e8c900ac30 (diff)
downloadlinux-stericsson-f90e579c2b391979630b3343de0be65ab1b478ce.tar.gz
btrfs: correctly handle return from ulist_add
ulist_add() can return '1' on sucess, which qgroup_subtree_accounting() doesn't take into account. As a result, that value can be bubbled up to callers, causing an error to be printed. Fix this by only returning the value of ulist_add() when it indicates an error. Signed-off-by: Mark Fasheh <mfasheh@suse.de> Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/qgroup.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 65b62c467e28..b497498484be 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -1959,6 +1959,7 @@ static int qgroup_subtree_accounting(struct btrfs_trans_handle *trans,
struct btrfs_qgroup_list *glist;
struct ulist *parents;
int ret = 0;
+ int err;
struct btrfs_qgroup *qg;
u64 root_obj = 0;
struct seq_list elem = {};
@@ -2013,10 +2014,12 @@ static int qgroup_subtree_accounting(struct btrfs_trans_handle *trans,
* while adding parents of the parents to our ulist.
*/
list_for_each_entry(glist, &qg->groups, next_group) {
- ret = ulist_add(parents, glist->group->qgroupid,
+ err = ulist_add(parents, glist->group->qgroupid,
ptr_to_u64(glist->group), GFP_ATOMIC);
- if (ret < 0)
+ if (err < 0) {
+ ret = err;
goto out_unlock;
+ }
}
ULIST_ITER_INIT(&uiter);
@@ -2028,10 +2031,12 @@ static int qgroup_subtree_accounting(struct btrfs_trans_handle *trans,
/* Add any parents of the parents */
list_for_each_entry(glist, &qg->groups, next_group) {
- ret = ulist_add(parents, glist->group->qgroupid,
+ err = ulist_add(parents, glist->group->qgroupid,
ptr_to_u64(glist->group), GFP_ATOMIC);
- if (ret < 0)
+ if (err < 0) {
+ ret = err;
goto out_unlock;
+ }
}
}