diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/ptlrpc/pers.c')
-rw-r--r-- | drivers/staging/lustre/lustre/ptlrpc/pers.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/drivers/staging/lustre/lustre/ptlrpc/pers.c b/drivers/staging/lustre/lustre/ptlrpc/pers.c new file mode 100644 index 000000000000..d926d2b36fb4 --- /dev/null +++ b/drivers/staging/lustre/lustre/ptlrpc/pers.c @@ -0,0 +1,75 @@ +/* + * GPL HEADER START + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 only, + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License version 2 for more details (a copy is included + * in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU General Public License + * version 2 along with this program; If not, see + * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + * GPL HEADER END + */ +/* + * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. + */ + +#define DEBUG_SUBSYSTEM S_RPC + +#include <obd_support.h> +#include <obd_class.h> +#include <lustre_lib.h> +#include <lustre_ha.h> +#include <lustre_import.h> + +#include "ptlrpc_internal.h" + + +void ptlrpc_fill_bulk_md(lnet_md_t *md, struct ptlrpc_bulk_desc *desc, + int mdidx) +{ + CLASSERT(PTLRPC_MAX_BRW_PAGES < LI_POISON); + + LASSERT(mdidx < desc->bd_md_max_brw); + LASSERT(desc->bd_iov_count <= PTLRPC_MAX_BRW_PAGES); + LASSERT(!(md->options & (LNET_MD_IOVEC | LNET_MD_KIOV | + LNET_MD_PHYS))); + + md->options |= LNET_MD_KIOV; + md->length = max(0, desc->bd_iov_count - mdidx * LNET_MAX_IOV); + md->length = min_t(unsigned int, LNET_MAX_IOV, md->length); + if (desc->bd_enc_iov) + md->start = &desc->bd_enc_iov[mdidx * LNET_MAX_IOV]; + else + md->start = &desc->bd_iov[mdidx * LNET_MAX_IOV]; +} + +void ptlrpc_add_bulk_page(struct ptlrpc_bulk_desc *desc, struct page *page, + int pageoffset, int len) +{ + lnet_kiov_t *kiov = &desc->bd_iov[desc->bd_iov_count]; + + kiov->kiov_page = page; + kiov->kiov_offset = pageoffset; + kiov->kiov_len = len; + + desc->bd_iov_count++; +} |