1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002, 2003 Cluster File Systems, Inc.
6 * This file is part of Lustre, http://www.lustre.org.
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 #ifndef LUSTRE_PATCHLESS_COMPAT_H
24 #define LUSTRE_PATCHLESS_COMPAT_H
26 #include <linux/lustre_version.h>
27 #ifndef LUSTRE_KERNEL_VERSION
30 #ifndef HAVE_TRUNCATE_COMPLETE_PAGE
31 #include <linux/list.h>
33 #include <linux/hash.h>
35 /* XXX copy & paste from 2.6.15 kernel */
36 static inline void ll_remove_from_page_cache(struct page *page)
38 struct address_space *mapping = page->mapping;
40 BUG_ON(!PageLocked(page));
42 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15))
43 write_lock_irq(&mapping->tree_lock);
45 spin_lock_irq(&mapping->tree_lock);
47 radix_tree_delete(&mapping->page_tree, page->index);
50 #ifdef HAVE_NR_PAGECACHE
51 atomic_add(-1, &nr_pagecache); // XXX pagecache_acct(-1);
53 __dec_zone_page_state(page, NR_FILE_PAGES);
56 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15))
57 write_unlock_irq(&mapping->tree_lock);
59 spin_unlock_irq(&mapping->tree_lock);
64 truncate_complete_page(struct address_space *mapping, struct page *page)
66 if (page->mapping != mapping)
69 if (PagePrivate(page))
70 page->mapping->a_ops->invalidatepage(page, 0);
72 #ifdef HAVE_CANCEL_DIRTY_PAGE
73 cancel_dirty_page(page, PAGE_SIZE);
75 clear_page_dirty(page);
77 ClearPageUptodate(page);
78 ClearPageMappedToDisk(page);
79 ll_remove_from_page_cache(page);
80 page_cache_release(page); /* pagecache ref */
85 static inline void d_rehash_cond(struct dentry * entry, int lock)
88 spin_unlock(&dcache_lock);
93 spin_lock(&dcache_lock);
96 #define __d_rehash(dentry, lock) d_rehash_cond(dentry, lock)
98 #define LUSTRE_PATCHLESS
100 #ifndef ATTR_FROM_OPEN
101 #define ATTR_FROM_OPEN 0
107 #endif /* LUSTRE_KERNEL_VERSION */