mirror of
https://github.com/torvalds/linux.git
synced 2024-12-13 06:32:50 +00:00
1244a6d7a2
Move the code for reading from a checkpoint entry that is performed in nilfs_attach_checkpoint() to the cpfile side, and make the page mapping local and temporary. And use kmap_local instead of kmap to access the checkpoint entry page. In order to load the ifile inode information included in the checkpoint entry within the inode lock section of nilfs_ifile_read(), the newly added checkpoint reading method nilfs_cpfile_read_checkpoint() is called indirectly via nilfs_ifile_read() instead of from nilfs_attach_checkpoint(). Link: https://lkml.kernel.org/r/20240122140202.6950-14-konishi.ryusuke@gmail.com Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* NILFS inode file
|
|
*
|
|
* Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
|
|
*
|
|
* Written by Amagai Yoshiji.
|
|
* Revised by Ryusuke Konishi.
|
|
*
|
|
*/
|
|
|
|
#ifndef _NILFS_IFILE_H
|
|
#define _NILFS_IFILE_H
|
|
|
|
#include <linux/fs.h>
|
|
#include <linux/buffer_head.h>
|
|
#include "mdt.h"
|
|
#include "alloc.h"
|
|
|
|
|
|
static inline struct nilfs_inode *
|
|
nilfs_ifile_map_inode(struct inode *ifile, ino_t ino, struct buffer_head *ibh)
|
|
{
|
|
void *kaddr = kmap_local_page(ibh->b_page);
|
|
|
|
return nilfs_palloc_block_get_entry(ifile, ino, ibh, kaddr);
|
|
}
|
|
|
|
static inline void nilfs_ifile_unmap_inode(struct nilfs_inode *raw_inode)
|
|
{
|
|
kunmap_local(raw_inode);
|
|
}
|
|
|
|
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 **);
|
|
|
|
int nilfs_ifile_count_free_inodes(struct inode *, u64 *, u64 *);
|
|
|
|
int nilfs_ifile_read(struct super_block *sb, struct nilfs_root *root,
|
|
__u64 cno, size_t inode_size);
|
|
|
|
#endif /* _NILFS_IFILE_H */
|