b=21259 "lfs check" is only allowed for root.

[fs/lustre-release.git] / lustre / obdclass / mea.c

diff --git a/lustre/obdclass/mea.c b/lustre/obdclass/mea.c
index 15f15d8..550bc25 100644 (file)
--- a/lustre/obdclass/mea.c
+++ b/lustre/obdclass/mea.c
@@ -1,22 +1,37 @@
 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
  * vim:expandtab:shiftwidth=8:tabstop=8:
  *
- * Copyright (C) 2002, 2003 Cluster File Systems, Inc.
+ * GPL HEADER START
  *
- *   This file is part of Lustre, http://www.lustre.org.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
- *   Lustre is free software; you can redistribute it and/or
- *   modify it under the terms of version 2 of the GNU General Public
- *   License as published by the Free Software Foundation.
+ * 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.
  *
- *   Lustre 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 for more details.
+ * 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
- *   along with Lustre; if not, write to the Free Software
- *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * 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  2008 Sun Microsystems, Inc. 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
@@ -35,11 +50,18 @@
 #include <lustre/lustre_idl.h>
 
 #ifdef __KERNEL__
-#include <linux/jbd.h>
+
 #ifdef HAVE_SERVER_SUPPORT
-/* LDISKFS_SB() */
+
+#ifdef HAVE_EXT4_LDISKFS
+#include <ldiskfs/ldiskfs_jbd2.h>
+#include <ldiskfs/ldiskfs.h>
+#else
+#include <linux/jbd.h>
 #include <linux/ldiskfs_fs.h>
 #endif
+
+#endif
 #endif
 static int mea_last_char_hash(int count, char *name, int namelen)
 {
@@ -66,8 +88,6 @@ static int mea_all_chars_hash(int count, char *name, int namelen)
 /* This hash calculate method must be same as the lvar hash method */
 
 #define LVAR_HASH_SANDWICH  (0)
-#define LVAR_HASH_TEA       (1)
-#define LVAR_HASH_R5        (0)
 #define LVAR_HASH_PREFIX    (0)
 
 static __u32 hash_build0(const char *name, int namelen)
@@ -88,10 +108,7 @@ static __u32 hash_build0(const char *name, int namelen)
         } else {
                 struct ldiskfs_dx_hash_info hinfo;
 
-                if (LVAR_HASH_TEA)
-                        hinfo.hash_version = LDISKFS_DX_HASH_TEA;
-                else
-                        hinfo.hash_version = LDISKFS_DX_HASH_R5;
+                hinfo.hash_version = LDISKFS_DX_HASH_TEA;
                 hinfo.seed = 0;
                 ldiskfsfs_dirhash(name, namelen, &hinfo);
                 result = hinfo.hash;
@@ -117,8 +134,8 @@ static __u32 hash_build(const char *name, int namelen)
 {
         __u32 hash;
 
-        hash = (hash_build0(name, namelen) << 1) & MAX_HASH_SIZE;
-        if (hash > MAX_HASH_SIZE - HASH_GRAY_AREA)
+        hash = (hash_build0(name, namelen) << 1) & MAX_HASH_SIZE_32;
+        if (hash > MAX_HASH_SIZE_32 - HASH_GRAY_AREA)
                 hash &= HASH_GRAY_AREA - 1;
         return hash;
 }
@@ -127,9 +144,9 @@ static int mea_hash_segment(int count, const char *name, int namelen)
 {
         __u32 hash;
 
-        LASSERT(IS_PO2(MAX_HASH_SIZE + 1));
+        LASSERT(IS_PO2(MAX_HASH_SIZE_32 + 1));
 
-        hash = hash_build(name, namelen) / (MAX_HASH_SIZE / count);
+        hash = hash_build(name, namelen) / (MAX_HASH_SIZE_32 / count);
         LASSERTF(hash < count, "hash %x count %d \n", hash, count);
 
         return hash;
@@ -137,7 +154,6 @@ static int mea_hash_segment(int count, const char *name, int namelen)
 #else
 static int mea_hash_segment(int count, char *name, int namelen)
 {
-#warning "fix for liblustre"
         return 0;
 }
 #endif
@@ -178,4 +194,3 @@ int mea_name2idx(struct lmv_stripe_md *mea, const char *name, int namelen)
         LASSERT(c < mea->mea_count);
         return c;
 }
-