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;
}
