1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #ifndef LUSTRE_CACHE_H
38 #define LUSTRE_CACHE_H
40 #include <lustre/lustre_idl.h>
41 #include <lustre_dlm.h>
44 struct osc_async_page;
45 struct page_removal_cb_element {
46 struct list_head prce_list;
47 obd_page_removal_cb_t prce_callback;
51 typedef int (*cache_iterate_extents_cb_t)(struct lustre_cache *,
52 struct lustre_handle *,
53 struct osc_async_page *,
55 typedef int (*cache_iterate_locks_cb_t)(struct lustre_cache *,
57 struct lustre_handle *, void *);
60 struct list_head lc_locks_list;
61 spinlock_t lc_locks_list_lock;
62 struct list_head lc_page_removal_callback_list;
63 rwlock_t lc_page_removal_cb_lock; /* iterate vs modify list */
64 struct obd_device *lc_obd;
65 obd_pin_extent_cb lc_pin_extent_cb;
68 int cache_add_lock(struct lustre_cache *cache, struct lustre_handle *lockh);
69 int cache_add_extent(struct lustre_cache *cache, struct ldlm_res_id *res,
70 struct osc_async_page *extent,
71 struct lustre_handle *lockh);
72 void cache_remove_extent(struct lustre_cache *, struct osc_async_page *);
73 int cache_add_extent_removal_cb(struct lustre_cache *cache,
74 obd_page_removal_cb_t func_cb,
75 obd_pin_extent_cb pin_cb);
76 int cache_del_extent_removal_cb(struct lustre_cache *cache,
77 obd_page_removal_cb_t func_cb);
78 int cache_iterate_extents(struct lustre_cache *cache, struct lustre_handle *lockh,
79 cache_iterate_extents_cb_t cb_func, void *data);
80 int cache_remove_lock(struct lustre_cache *cache, struct lustre_handle *lockh);
81 int cache_iterate_locks(struct lustre_cache *cache, struct ldlm_res_id *res,
82 cache_iterate_locks_cb_t cb_fun, void *data);
83 struct lustre_cache *cache_create(struct obd_device *obd);
84 int cache_destroy(struct lustre_cache *cache);
87 #endif /* LUSTRE_CACHE_H */