diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/obdclass/mea.c')
| -rw-r--r-- | drivers/staging/lustre/lustre/obdclass/mea.c | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/drivers/staging/lustre/lustre/obdclass/mea.c b/drivers/staging/lustre/lustre/obdclass/mea.c deleted file mode 100644 index d6ce084da902..000000000000 --- a/drivers/staging/lustre/lustre/obdclass/mea.c +++ /dev/null @@ -1,112 +0,0 @@ -/* - * 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_CLASS -#include "../include/obd_class.h" -#include <linux/kmod.h> /* for request_module() */ -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/pagemap.h> -#include "../include/lprocfs_status.h" -#include "../include/lustre/lustre_idl.h" - -static int mea_last_char_hash(int count, char *name, int namelen) -{ - unsigned int c; - - c = name[namelen - 1]; - if (c == 0) - CWARN("looks like wrong len is passed\n"); - c = c % count; - return c; -} - -static int mea_all_chars_hash(int count, char *name, int namelen) -{ - unsigned int c = 0; - - while (--namelen >= 0) - c += name[namelen]; - c = c % count; - return c; -} - -int raw_name2idx(int hashtype, int count, const char *name, int namelen) -{ - unsigned int c = 0; - int idx; - - LASSERT(namelen > 0); - - if (filename_is_volatile(name, namelen, &idx)) { - if ((idx >= 0) && (idx < count)) - return idx; - goto hashchoice; - } - - if (count <= 1) - return 0; - -hashchoice: - switch (hashtype) { - case MEA_MAGIC_LAST_CHAR: - c = mea_last_char_hash(count, (char *)name, namelen); - break; - case MEA_MAGIC_ALL_CHARS: - c = mea_all_chars_hash(count, (char *)name, namelen); - break; - case MEA_MAGIC_HASH_SEGMENT: - CERROR("Unsupported hash type MEA_MAGIC_HASH_SEGMENT\n"); - break; - default: - CERROR("Unknown hash type 0x%x\n", hashtype); - } - - LASSERT(c < count); - return c; -} -EXPORT_SYMBOL(raw_name2idx); - -int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen) -{ - unsigned int c; - - LASSERT(mea && mea->mea_count); - - c = raw_name2idx(mea->mea_magic, mea->mea_count, name, namelen); - - LASSERT(c < mea->mea_count); - return c; -} -EXPORT_SYMBOL(mea_name2idx); |