xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

nilfs2: inode map file

Browse Source 
This adds a meta data file which stores on-disk inodes in its data blocks.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Yoshiji Amagai <amagai.yoshiji@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ryusuke Konishi
2009-04-06 19:01:30 -07:00
committed by Linus Torvalds
parent a17564f58b
commit 43bfb45ed4
2 changed files with 203 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

53
fs/nilfs2/ifile.h Normal file
View File

@@ -0,0 +1,53 @@
/*
* ifile.h - NILFS inode file
*
* Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Written by Amagai Yoshiji <amagai@osrg.net>
* Revised by Ryusuke Konishi <ryusuke@osrg.net>
*
*/
#ifndef _NILFS_IFILE_H
#define _NILFS_IFILE_H
#include <linux/fs.h>
#include <linux/buffer_head.h>
#include <linux/nilfs2_fs.h>
#include "mdt.h"
#include "alloc.h"
#define NILFS_IFILE_GFP NILFS_MDT_GFP
static inline struct nilfs_inode *
nilfs_ifile_map_inode(struct inode *ifile, ino_t ino, struct buffer_head *ibh)
{
void *kaddr = kmap(ibh->b_page);
return nilfs_palloc_block_get_entry(ifile, ino, ibh, kaddr);
}
static inline void nilfs_ifile_unmap_inode(struct inode *ifile, ino_t ino,
struct buffer_head *ibh)
{
kunmap(ibh->b_page);
}
int nilfs_ifile_create_inode(struct inode *, ino_t *, struct buffer_head **);
int nilfs_ifile_delete_inode(struct inode *, ino_t);
int nilfs_ifile_get_inode_block(struct inode *, ino_t, struct buffer_head **);
#endif /* _NILFS_IFILE_H */