Add documentation for the "Only allow merge requests to be merged if all discussions are resolved" feature

Signed-off-by: Rémy Coutable <remy@rymai.me>

1 files changed, 18 insertions, 0 deletions

diff --git a/doc/user/project/merge_requests/merge_request_discussion_resolution.md b/doc/user/project/merge_requests/merge_request_discussion_resolution.md
index 2559f5f5250..285b1798ac5 100644
--- a/doc/user/project/merge_requests/merge_request_discussion_resolution.md
+++ b/doc/user/project/merge_requests/merge_request_discussion_resolution.md
@@ -33,7 +33,25 @@ resolved discussions tracker.
 
 !["3/4 discussions resolved"][discussions-resolved]
 
+## Only allow merge requests to be merged if all discussions are resolved
+
+> [Introduced][ce-7125] in GitLab 8.14.
+
+You can prevent merge requests from being merged until all discussions are resolved.
+
+Navigate to your project's settings page, select the
+**Only allow merge requests to be merged if all discussions are resolved** check
+box and hit **Save** for the changes to take effect.
+
+![Only allow merge if all the discussions are resolved settings](img/only_allow_merge_if_all_discussions_are_resolved.png)
+
+From now on, you will not be able to merge from the UI until all discussions
+are resolved.
+
+![Only allow merge if all the discussions are resolved message](img/only_allow_merge_if_all_discussions_are_resolved_msg.png)
+
 [ce-5022]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5022
+[ce-7125]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7125
 [resolve-discussion-button]: img/resolve_discussion_button.png
 [resolve-comment-button]: img/resolve_comment_button.png
 [discussion-view]: img/discussion_view.png