1/* SPDX-License-Identifier: LGPL-2.1 */
2/*
3 * Copyright IBM Corporation, 2010
4 * Author Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
 
 
 
 
 
 
 
 
 
5 */
6
7void p9_release_pages(struct page **pages, int nr_pages);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 1/*
 2 * Copyright IBM Corporation, 2010
 3 * Author Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
 4 *
 5 * This program is free software; you can redistribute it and/or modify it
 6 * under the terms of version 2.1 of the GNU Lesser General Public License
 7 * as published by the Free Software Foundation.
 8 *
 9 * This program is distributed in the hope that it would be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 *
13 */
14
15/* TRUE if it is user context */
16#define P9_IS_USER_CONTEXT (!segment_eq(get_fs(), KERNEL_DS))
17
18/**
19 * struct trans_rpage_info - To store mapped page information in PDU.
20 * @rp_alloc:Set if this structure is allocd, not a reuse unused space in pdu.
21 * @rp_nr_pages: Number of mapped pages
22 * @rp_data: Array of page pointers
23 */
24struct trans_rpage_info {
25	u8 rp_alloc;
26	int rp_nr_pages;
27	struct page *rp_data[0];
28};
29
30void p9_release_req_pages(struct trans_rpage_info *);
31int p9_payload_gup(struct p9_req_t *, size_t *, int *, int, u8);
32int p9_nr_pages(struct p9_req_t *);