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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2016, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * Internal cl interfaces.
34 * Author: Nikita Danilov <nikita.danilov@sun.com>
36 #ifndef _CL_INTERNAL_H
37 #define _CL_INTERNAL_H
39 #define CLT_PVEC_SIZE (14)
42 * Possible levels of the nesting. Currently this is 2: there are "top"
43 * entities (files, extent locks), and "sub" entities (stripes and stripe
44 * locks). This is used only for debugging counters right now.
46 enum clt_nesting_level {
53 * Thread local state internal for generic cl-code.
55 struct cl_thread_info {
60 struct cl_2queue clt_queue;
63 * Fields used by cl_lock.c
65 struct cl_lock_descr clt_descr;
66 struct cl_page_list clt_list;
70 * Fields used by cl_page.c
72 struct cl_page *clt_pvec[CLT_PVEC_SIZE];
75 * Fields used by cl_io.c
78 * Pointer to the topmost ongoing IO in this thread.
80 struct cl_io *clt_current_io;
82 * Used for submitting a sync io.
84 struct cl_sync_io clt_anchor;
86 * Fields used by cl_lock_discard_pages().
88 pgoff_t clt_next_index;
89 pgoff_t clt_fn_index; /* first non-overlapped index */
92 struct cl_thread_info *cl_env_info(const struct lu_env *env);
93 void cl_page_disown0(const struct lu_env *env,
94 struct cl_io *io, struct cl_page *pg);
97 #endif /* _CL_INTERNAL_H */