- if (lli->lli_has_smd) {
- struct cl_lock *lock = vvp_env_lock(env);
- struct cl_lock_descr *descr = &lock->cll_descr;
-
- /* NOTE: this looks like DLM lock request, but it may
- * not be one. Due to CEF_ASYNC flag (translated
- * to LDLM_FL_HAS_INTENT by osc), this is
- * glimpse request, that won't revoke any
- * conflicting DLM locks held. Instead,
- * ll_glimpse_callback() will be called on each
- * client holding a DLM lock against this file,
- * and resulting size will be returned for each
- * stripe. DLM lock on [0, EOF] is acquired only
- * if there were no conflicting locks. If there
- * were conflicting locks, enqueuing or waiting
- * fails with -ENAVAIL, but valid inode
- * attributes are returned anyway. */
- *descr = whole_file;
- descr->cld_obj = clob;
- descr->cld_mode = CLM_READ;
- descr->cld_enq_flags = CEF_ASYNC | CEF_MUST;
- if (agl)
- descr->cld_enq_flags |= CEF_AGL;
- /*
- * CEF_ASYNC is used because glimpse sub-locks cannot
- * deadlock (because they never conflict with other
- * locks) and, hence, can be enqueued out-of-order.
- *
- * CEF_MUST protects glimpse lock from conversion into
- * a lockless mode.
- */
- result = cl_lock_request(env, io, lock);
- if (result < 0)
- RETURN(result);