4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
40 /** \defgroup lite lite
45 #include "linux/lustre_lite.h"
47 #include "obd_class.h"
48 #include "lustre_net.h"
49 #include "lustre_mds.h"
50 #include "lustre_ha.h"
52 /* 4UL * 1024 * 1024 */
53 #define LL_MAX_BLKSIZE_BITS (22)
54 #define LL_MAX_BLKSIZE (1UL<<LL_MAX_BLKSIZE_BITS)
57 * This is embedded into llite super-blocks to keep track of
58 * connect flags (capabilities) supported by all imports given mount is
61 struct lustre_client_ocd {
63 * This is conjunction of connect_flags across all imports (LOVs) this
64 * mount is connected to. This field is updated by cl_ocd_update()
68 struct mutex lco_lock;
69 struct obd_export *lco_md_exp;
70 struct obd_export *lco_dt_exp;
74 * Chain of hash overflow pages.
77 /* XXX something. Later */
80 static inline void ll_dir_chain_init(struct ll_dir_chain *chain)
84 static inline void ll_dir_chain_fini(struct ll_dir_chain *chain)
88 static inline unsigned long hash_x_index(__u64 hash, int hash64)
90 if (BITS_PER_LONG == 32 && hash64)
92 /* save hash 0 as index 0 because otherwise we'll save it at
93 * page index end (~0UL) and it causes truncate_inode_pages_range()
96 return ~0UL - (hash + !hash);