2011-01-28 22:11:13 +00:00
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/*
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* Copyright IBM Corporation, 2010
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* Author Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2.1 of the GNU Lesser General Public License
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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*/
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2011-01-28 23:22:36 +00:00
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/* TRUE if it is user context */
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#define P9_IS_USER_CONTEXT (!segment_eq(get_fs(), KERNEL_DS))
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2011-01-28 22:11:13 +00:00
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/**
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* struct trans_rpage_info - To store mapped page information in PDU.
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* @rp_alloc:Set if this structure is allocd, not a reuse unused space in pdu.
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* @rp_nr_pages: Number of mapped pages
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* @rp_data: Array of page pointers
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*/
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struct trans_rpage_info {
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u8 rp_alloc;
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int rp_nr_pages;
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struct page *rp_data[0];
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};
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void p9_release_req_pages(struct trans_rpage_info *);
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int p9_payload_gup(struct p9_req_t *, size_t *, int *, int, u8);
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int p9_nr_pages(struct p9_req_t *);
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