quota: Add support for ->get_nextdqblk() for VFS quota

Add infrastructure for supporting get_nextdqblk() callback for VFS
quotas. Translate the operation into a callback to appropriate
filesystem and consequently to quota format callback.

Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 3ed01ec011d7..b5bcbddceb91 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1132,6 +1132,7 @@ static const struct dquot_operations ext4_quota_operations = {
         .alloc_dquot    = dquot_alloc,
         .destroy_dquot  = dquot_destroy,
         .get_projid     = ext4_get_projid,
+        .get_next_id    = dquot_get_next_id,
 };
 
 static const struct quotactl_ops ext4_qctl_operations = {