static int md_get_async(int len) { if(md_int_load(len)!=len) return -1; if(md_broker_func) md_enqueue((struct mcmd_event *)md_int_buf); return 1; }
static int llu_dir_do_readpage(struct inode *inode, struct page *page) { struct llu_inode_info *lli = llu_i2info(inode); struct intnl_stat *st = llu_i2stat(inode); struct llu_sb_info *sbi = llu_i2sbi(inode); struct ptlrpc_request *request; struct lustre_handle lockh; struct mdt_body *body; struct lookup_intent it = { .it_op = IT_READDIR }; struct md_op_data op_data = {{ 0 }}; ldlm_policy_data_t policy = { .l_inodebits = { MDS_INODELOCK_UPDATE } }; int rc = 0; ENTRY; llu_prep_md_op_data(&op_data, inode, NULL, NULL, 0, 0, LUSTRE_OPC_ANY); rc = md_lock_match(sbi->ll_md_exp, LDLM_FL_BLOCK_GRANTED, &lli->lli_fid, LDLM_IBITS, &policy, LCK_CR, &lockh); if (!rc) { struct ldlm_enqueue_info einfo = { .ei_type = LDLM_IBITS, .ei_mode = LCK_CR, .ei_cb_bl = llu_md_blocking_ast, .ei_cb_cp = ldlm_completion_ast, .ei_cbdata = inode, }; rc = md_enqueue(sbi->ll_md_exp, &einfo, &it, &op_data, &lockh, NULL, 0, NULL, LDLM_FL_CANCEL_ON_BLOCK); request = (struct ptlrpc_request *)it.d.lustre.it_data; if (request) ptlrpc_req_finished(request); if (rc < 0) { CERROR("lock enqueue: err: %d\n", rc); RETURN(rc); } } ldlm_lock_dump_handle(D_OTHER, &lockh); op_data.op_offset = (__u64)hash_x_index(page->index, 0); op_data.op_npages = 1; rc = md_readpage(sbi->ll_md_exp, &op_data, &page, &request); if (!rc) { body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY); LASSERT(body != NULL); /* checked by md_readpage() */ if (body->valid & OBD_MD_FLSIZE) st->st_size = body->size; } else { CERROR("read_dir_page(%ld) error %d\n", page->index, rc); } ptlrpc_req_finished(request); EXIT; ldlm_lock_decref(&lockh, LCK_CR); return rc; }