| /* |
| * Copyright IBM Corporation, 2010 |
| * Author Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of version 2.1 of the GNU Lesser General Public License |
| * as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it would be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| * |
| */ |
| |
| /* TRUE if it is user context */ |
| #define P9_IS_USER_CONTEXT (!segment_eq(get_fs(), KERNEL_DS)) |
| |
| /** |
| * struct trans_rpage_info - To store mapped page information in PDU. |
| * @rp_alloc:Set if this structure is allocd, not a reuse unused space in pdu. |
| * @rp_nr_pages: Number of mapped pages |
| * @rp_data: Array of page pointers |
| */ |
| struct trans_rpage_info { |
| u8 rp_alloc; |
| int rp_nr_pages; |
| struct page *rp_data[0]; |
| }; |
| |
| void p9_release_req_pages(struct trans_rpage_info *); |
| int p9_payload_gup(struct p9_req_t *, size_t *, int *, int, u8); |
| int p9_nr_pages(struct p9_req_t *); |
