struct ldlm_intent *lit;
int rc, count = 0;
struct list_head cancels = LIST_HEAD_INIT(cancels);
+ u32 min_buf_size = 0;
ENTRY;
lit = req_capsule_client_get(&req->rq_pill, &RMF_LDLM_INTENT);
lit->opc = IT_GETXATTR;
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(3, 0, 53, 0)
+ /* If the supplied buffer is too small then the server will
+ * return -ERANGE and llite will fallback to using non cached
+ * xattr operations. On servers before 2.10.1 a (non-cached)
+ * listxattr RPC for an orphan or dead file causes an oops. So
+ * let's try to avoid sending too small a buffer to too old a
+ * server. This is effectively undoing the memory conservation
+ * of LU-9417 when it would be *more* likely to crash the
+ * server. See LU-9856. */
+ if (exp->exp_connect_data.ocd_version < OBD_OCD_VERSION(2, 10, 1, 0))
+ min_buf_size = exp->exp_connect_data.ocd_max_easize;
+#endif
+
/* pack the intended request */
mdc_pack_body(req, &op_data->op_fid1, op_data->op_valid,
- GA_DEFAULT_EA_NAME_LEN * GA_DEFAULT_EA_NUM,
+ max_t(u32, min_buf_size,
+ GA_DEFAULT_EA_NAME_LEN * GA_DEFAULT_EA_NUM),
-1, 0);
req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_SERVER,
- GA_DEFAULT_EA_NAME_LEN * GA_DEFAULT_EA_NUM);
+ max_t(u32, min_buf_size,
+ GA_DEFAULT_EA_NAME_LEN * GA_DEFAULT_EA_NUM));
req_capsule_set_size(&req->rq_pill, &RMF_EAVALS, RCL_SERVER,
- GA_DEFAULT_EA_VAL_LEN * GA_DEFAULT_EA_NUM);
+ max_t(u32, min_buf_size,
+ GA_DEFAULT_EA_VAL_LEN * GA_DEFAULT_EA_NUM));
req_capsule_set_size(&req->rq_pill, &RMF_EAVALS_LENS, RCL_SERVER,
- sizeof(__u32) * GA_DEFAULT_EA_NUM);
+ max_t(u32, min_buf_size,
+ sizeof(__u32) * GA_DEFAULT_EA_NUM));
req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER, 0);