]>
git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - fs/nilfs2/page.h
2 * page.h - buffer/page management specific to NILFS
4 * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * Written by Ryusuke Konishi <ryusuke@osrg.net>,
21 * Seiji Kihara <kihara@osrg.net>.
27 #include <linux/buffer_head.h>
31 * Extended buffer state bits
34 BH_NILFS_Allocated
= BH_PrivateStart
,
39 BUFFER_FNS(NILFS_Allocated
, nilfs_allocated
) /* nilfs private buffers */
40 BUFFER_FNS(NILFS_Node
, nilfs_node
) /* nilfs node buffers */
41 BUFFER_FNS(NILFS_Volatile
, nilfs_volatile
)
44 void nilfs_mark_buffer_dirty(struct buffer_head
*bh
);
45 int __nilfs_clear_page_dirty(struct page
*);
47 struct buffer_head
*nilfs_grab_buffer(struct inode
*, struct address_space
*,
48 unsigned long, unsigned long);
49 void nilfs_forget_buffer(struct buffer_head
*);
50 void nilfs_copy_buffer(struct buffer_head
*, struct buffer_head
*);
51 int nilfs_page_buffers_clean(struct page
*);
52 void nilfs_page_bug(struct page
*);
53 struct page
*nilfs_alloc_private_page(struct block_device
*, int,
55 void nilfs_free_private_page(struct page
*);
57 int nilfs_copy_dirty_pages(struct address_space
*, struct address_space
*);
58 void nilfs_copy_back_pages(struct address_space
*, struct address_space
*);
59 void nilfs_clear_dirty_pages(struct address_space
*);
60 unsigned nilfs_page_count_clean_buffers(struct page
*, unsigned, unsigned);
62 #define NILFS_PAGE_BUG(page, m, a...) \
63 do { nilfs_page_bug(page); BUG(); } while (0)
65 static inline struct buffer_head
*
66 nilfs_page_get_nth_block(struct page
*page
, unsigned int count
)
68 struct buffer_head
*bh
= page_buffers(page
);
76 #endif /* _NILFS_PAGE_H */