Commits
Alex Elder committed a2acd00e796
rbd: reference count parent requests Keep a reference count for uses of the parent information for an rbd device. An initial reference is set in rbd_img_request_create() if the target image has a parent (with non-zero overlap). Each image request for an image with a non-zero parent overlap gets another reference when it's created, and that reference is dropped when the request is destroyed. The initial reference is dropped when the image gets torn down. Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>