| /* |
| * 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) 2007, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Use is subject to license terms. |
| * |
| * Copyright (c) 2011, 2012, Intel Corporation. |
| */ |
| /* |
| * This file is part of Lustre, http://www.lustre.org/ |
| * Lustre is a trademark of Sun Microsystems, Inc. |
| */ |
| |
| #ifndef _LL_H |
| #define _LL_H |
| |
| /** \defgroup lite lite |
| * |
| * @{ |
| */ |
| |
| #include "linux/lustre_lite.h" |
| |
| #include "obd_class.h" |
| #include "lustre_net.h" |
| #include "lustre_mds.h" |
| #include "lustre_ha.h" |
| |
| /* 4UL * 1024 * 1024 */ |
| #define LL_MAX_BLKSIZE_BITS (22) |
| #define LL_MAX_BLKSIZE (1UL<<LL_MAX_BLKSIZE_BITS) |
| |
| /* |
| * This is embedded into llite super-blocks to keep track of |
| * connect flags (capabilities) supported by all imports given mount is |
| * connected to. |
| */ |
| struct lustre_client_ocd { |
| /* |
| * This is conjunction of connect_flags across all imports (LOVs) this |
| * mount is connected to. This field is updated by cl_ocd_update() |
| * under ->lco_lock. |
| */ |
| __u64 lco_flags; |
| struct mutex lco_lock; |
| struct obd_export *lco_md_exp; |
| struct obd_export *lco_dt_exp; |
| }; |
| |
| /* |
| * Chain of hash overflow pages. |
| */ |
| struct ll_dir_chain { |
| /* XXX something. Later */ |
| }; |
| |
| static inline void ll_dir_chain_init(struct ll_dir_chain *chain) |
| { |
| } |
| |
| static inline void ll_dir_chain_fini(struct ll_dir_chain *chain) |
| { |
| } |
| |
| static inline unsigned long hash_x_index(__u64 hash, int hash64) |
| { |
| if (BITS_PER_LONG == 32 && hash64) |
| hash >>= 32; |
| /* save hash 0 as index 0 because otherwise we'll save it at |
| * page index end (~0UL) and it causes truncate_inode_pages_range() |
| * to loop forever. |
| */ |
| return ~0UL - (hash + !hash); |
| } |
| |
| /** @} lite */ |
| |
| #endif |