nilfs2: insert checkpoint number in segment summary header
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / fs / btrfs / hash.h
blobdb2ff9773b99d02300e84f4bec207f59c65e73ef
1 /*
2 * Copyright (C) 2007 Oracle. All rights reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
19 #ifndef __HASH__
20 #define __HASH__
22 #include <linux/crc32c.h>
23 static inline u64 btrfs_name_hash(const char *name, int len)
25 return crc32c((u32)~1, name, len);
27 #endif