[PATCH 4.2 052/110] rbd: prevent kernel stack blow up on rbd map

4.2-stable review patch. If anyone has any objections, please let me know. -- From: Ilya Dryomov commit 6d69bb536bac0d403d83db1ca841444981b280cd upstream. Mapping an image with a long parent chain (e.g. image foo, whose parent is bar, whose parent is baz, etc) currently leads

[PATCH 4.2 052/110] rbd: prevent kernel stack blow up on rbd map

4.2-stable review patch. If anyone has any objections, please let me know. -- From: Ilya Dryomov commit 6d69bb536bac0d403d83db1ca841444981b280cd upstream. Mapping an image with a long parent chain (e.g. image foo, whose parent is bar, whose parent is baz,