mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-15 23:14:31 +08:00
ae98043f5f
Remove the verbose license text from NILFS2 files and replace them with SPDX tags. This does not change the license of any of the code. Link: http://lkml.kernel.org/r/1535624528-5982-1-git-send-email-konishi.ryusuke@lab.ntt.co.jp Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* page.h - buffer/page management specific to NILFS
|
|
*
|
|
* Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation.
|
|
*
|
|
* Written by Ryusuke Konishi and Seiji Kihara.
|
|
*/
|
|
|
|
#ifndef _NILFS_PAGE_H
|
|
#define _NILFS_PAGE_H
|
|
|
|
#include <linux/buffer_head.h>
|
|
#include "nilfs.h"
|
|
|
|
/*
|
|
* Extended buffer state bits
|
|
*/
|
|
enum {
|
|
BH_NILFS_Allocated = BH_PrivateStart,
|
|
BH_NILFS_Node,
|
|
BH_NILFS_Volatile,
|
|
BH_NILFS_Checked,
|
|
BH_NILFS_Redirected,
|
|
};
|
|
|
|
BUFFER_FNS(NILFS_Node, nilfs_node) /* nilfs node buffers */
|
|
BUFFER_FNS(NILFS_Volatile, nilfs_volatile)
|
|
BUFFER_FNS(NILFS_Checked, nilfs_checked) /* buffer is verified */
|
|
BUFFER_FNS(NILFS_Redirected, nilfs_redirected) /* redirected to a copy */
|
|
|
|
|
|
int __nilfs_clear_page_dirty(struct page *);
|
|
|
|
struct buffer_head *nilfs_grab_buffer(struct inode *, struct address_space *,
|
|
unsigned long, unsigned long);
|
|
void nilfs_forget_buffer(struct buffer_head *);
|
|
void nilfs_copy_buffer(struct buffer_head *, struct buffer_head *);
|
|
int nilfs_page_buffers_clean(struct page *);
|
|
void nilfs_page_bug(struct page *);
|
|
|
|
int nilfs_copy_dirty_pages(struct address_space *, struct address_space *);
|
|
void nilfs_copy_back_pages(struct address_space *, struct address_space *);
|
|
void nilfs_clear_dirty_page(struct page *, bool);
|
|
void nilfs_clear_dirty_pages(struct address_space *, bool);
|
|
void nilfs_mapping_init(struct address_space *mapping, struct inode *inode);
|
|
unsigned int nilfs_page_count_clean_buffers(struct page *, unsigned int,
|
|
unsigned int);
|
|
unsigned long nilfs_find_uncommitted_extent(struct inode *inode,
|
|
sector_t start_blk,
|
|
sector_t *blkoff);
|
|
|
|
#define NILFS_PAGE_BUG(page, m, a...) \
|
|
do { nilfs_page_bug(page); BUG(); } while (0)
|
|
|
|
static inline struct buffer_head *
|
|
nilfs_page_get_nth_block(struct page *page, unsigned int count)
|
|
{
|
|
struct buffer_head *bh = page_buffers(page);
|
|
|
|
while (count-- > 0)
|
|
bh = bh->b_this_page;
|
|
get_bh(bh);
|
|
return bh;
|
|
}
|
|
|
|
#endif /* _NILFS_PAGE_H */
|