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// SPDX-License-Identifier: GPL-2.0
/*
* 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.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2012, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*
* Internal cl interfaces.
*
* Author: Nikita Danilov <nikita.danilov@sun.com>
*/
#ifndef _CL_INTERNAL_H
#define _CL_INTERNAL_H
#define CLT_PVEC_SIZE (14)
/**
* Possible levels of the nesting. Currently this is 2: there are "top"
* entities (files, extent locks), and "sub" entities (stripes and stripe
* locks). This is used only for debugging counters right now.
*/
enum clt_nesting_level {
CNL_TOP,
CNL_SUB,
CNL_NR
};
/**
* Thread local state internal for generic cl-code.
*/
struct cl_thread_info {
/*
* Common fields.
*/
struct cl_io clt_io;
struct cl_2queue clt_queue;
/*
* Fields used by cl_lock.c
*/
struct cl_lock_descr clt_descr;
struct cl_page_list clt_list;
/** @} debugging */
/*
* Fields used by cl_page.c
*/
struct cl_page *clt_pvec[CLT_PVEC_SIZE];
/*
* Fields used by cl_io.c
*/
/**
* Pointer to the topmost ongoing IO in this thread.
*/
struct cl_io *clt_current_io;
/**
* Used for submitting a sync io.
*/
struct cl_sync_io clt_anchor;
/**
* Fields used by cl_lock_discard_pages().
*/
pgoff_t clt_next_index;
pgoff_t clt_fn_index; /* first non-overlapped index */
};
struct cl_thread_info *cl_env_info(const struct lu_env *env);
#endif /* _CL_INTERNAL_H */
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