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/*
* 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
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