LU-5290 clio: reorder initialization in cl_req_alloc()

In cl_req_alloc() ensure that the list heads crq_pages and crq_layers
have been initialized before passing the request to
cl_req_completion(). This fixes an oops in the error path.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Change-Id: I1f4ff994ca5db974e97b41452f7351f68ed350f8
Reviewed-on: http://review.whamcloud.com/11009
Tested-by: Jenkins
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>

diff --git a/lustre/obdclass/cl_io.c b/lustre/obdclass/cl_io.c
index d0d2ac4..7825e08 100644 (file)
--- a/lustre/obdclass/cl_io.c
+++ b/lustre/obdclass/cl_io.c
@@ -1421,12 +1421,13 @@ struct cl_req *cl_req_alloc(const struct lu_env *env, struct cl_page *page,
         if (req != NULL) {
                 int result;
 
+               req->crq_type = crt;
+               INIT_LIST_HEAD(&req->crq_pages);
+               INIT_LIST_HEAD(&req->crq_layers);
+
                 OBD_ALLOC(req->crq_o, nr_objects * sizeof req->crq_o[0]);
                 if (req->crq_o != NULL) {
                         req->crq_nrobjs = nr_objects;
-                        req->crq_type = crt;
-                        CFS_INIT_LIST_HEAD(&req->crq_pages);
-                        CFS_INIT_LIST_HEAD(&req->crq_layers);
                         result = cl_req_init(env, req, page);
                 } else
                         result = -ENOMEM;