super.c File Reference

#include <linux/module.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/parser.h>
#include <linux/crc32.h>
#include <linux/vfs.h>
#include <linux/writeback.h>
#include <linux/seq_file.h>
#include <linux/mount.h>
#include "nilfs.h"
#include "export.h"
#include "mdt.h"
#include "alloc.h"
#include "btree.h"
#include "btnode.h"
#include "page.h"
#include "cpfile.h"
#include "sufile.h"
#include "ifile.h"
#include "dat.h"
#include "segment.h"
#include "segbuf.h"

Go to the source code of this file.

Data Structures
struct	nilfs_super_data

Enumerations
enum	{   Opt_err_cont, Opt_err_panic, Opt_err_ro, Opt_barrier,   Opt_nobarrier, Opt_snapshot, Opt_order, Opt_norecovery,   Opt_discard, Opt_nodiscard, Opt_err }

Functions
	MODULE_AUTHOR ("NTT Corp.")
	MODULE_DESCRIPTION ("A New Implementation of the Log-structured Filesystem ""(NILFS)")
	MODULE_LICENSE ("GPL")
void	nilfs_error (struct super_block *sb, const char *function, const char *fmt,...)
void	nilfs_warning (struct super_block *sb, const char *function, const char *fmt,...)
struct inode *	nilfs_alloc_inode (struct super_block *sb)
void	nilfs_destroy_inode (struct inode *inode)
void	nilfs_set_log_cursor (struct nilfs_super_block *sbp, struct the_nilfs *nilfs)
struct nilfs_super_block **	nilfs_prepare_super (struct super_block *sb, int flip)
int	nilfs_commit_super (struct super_block *sb, int flag)
int	nilfs_cleanup_super (struct super_block *sb)
int	nilfs_resize_fs (struct super_block *sb, __u64 newsize)
int	nilfs_attach_checkpoint (struct super_block *sb, __u64 cno, int curr_mnt, struct nilfs_root **rootp)
struct nilfs_super_block *	nilfs_read_super_block (struct super_block *sb, u64 pos, int blocksize, struct buffer_head **pbh)
int	nilfs_store_magic_and_option (struct super_block *sb, struct nilfs_super_block *sbp, char *data)
int	nilfs_check_feature_compatibility (struct super_block *sb, struct nilfs_super_block *sbp)
int	nilfs_checkpoint_is_mounted (struct super_block *sb, __u64 cno)

Variables
struct kmem_cache *	nilfs_transaction_cachep
struct kmem_cache *	nilfs_segbuf_cachep
struct kmem_cache *	nilfs_btree_path_cache
struct file_system_type	nilfs_fs_type

Enumeration Type Documentation

anonymous enum

Enumerator:

Opt_err_cont
Opt_err_panic
Opt_err_ro
Opt_barrier
Opt_nobarrier
Opt_snapshot
Opt_order
Opt_norecovery
Opt_discard
Opt_nodiscard
Opt_err

Definition at line 689 of file super.c.

Function Documentation

MODULE_AUTHOR

(

"NTT Corp."

)

MODULE_DESCRIPTION

(

"A New Implementation of the Log-structured Filesystem ""(NILFS)"

)

MODULE_LICENSE

(

"GPL"

)

struct inode* nilfs_alloc_inode ( struct super_block *  sb )

read

Definition at line 158 of file super.c.

int nilfs_attach_checkpoint	(	struct super_block *	sb,
		__u64	cno,
		int	curr_mnt,
		struct nilfs_root **	rootp
	)

Definition at line 520 of file super.c.

int nilfs_check_feature_compatibility	(	struct super_block *	sb,
		struct nilfs_super_block *	sbp
	)

Definition at line 865 of file super.c.

int nilfs_checkpoint_is_mounted	(	struct super_block *	sb,
		__u64	cno
	)

Definition at line 993 of file super.c.

int nilfs_cleanup_super

(

struct super_block *

sb

)

nilfs_cleanup_super() - write filesystem state for cleanup : super block instance to be unmounted or degraded to read-only

This function restores state flags in the on-disk super block. This will set "clean" flag (i.e. NILFS_VALID_FS) unless the filesystem was not clean previously.

Definition at line 324 of file super.c.

int nilfs_commit_super	(	struct super_block *	sb,
		int	flag
	)

Definition at line 291 of file super.c.

void nilfs_destroy_inode

(

struct inode *

inode

)

Definition at line 185 of file super.c.

void nilfs_error	(	struct super_block *	sb,
		const char *	function,
		const char *	fmt,
			...
	)

nilfs_error() - report failure condition on a filesystem

nilfs_error() sets an ERROR_FS flag on the superblock as well as reporting an error message. It should be called when NILFS detects incoherences or defects of meta data on disk. As for sustainable errors such as a single-shot I/O error, nilfs_warning() or the printk() function should be used instead.

The segment constructor must not call this function because it can kill itself.

Definition at line 109 of file super.c.

struct nilfs_super_block** nilfs_prepare_super ( struct super_block *  sb, int  flip  )

read

Definition at line 264 of file super.c.

struct nilfs_super_block* nilfs_read_super_block ( struct super_block *  sb, u64  pos, int  blocksize, struct buffer_head **  pbh  )

read

Definition at line 828 of file super.c.

int nilfs_resize_fs	(	struct super_block *	sb,
		__u64	newsize
	)

nilfs_resize_fs - resize the filesystem : super block instance : new size of the filesystem (in bytes)

Definition at line 411 of file super.c.

void nilfs_set_log_cursor	(	struct nilfs_super_block *	sbp,
		struct the_nilfs *	nilfs
	)

Definition at line 248 of file super.c.

int nilfs_store_magic_and_option	(	struct super_block *	sb,
		struct nilfs_super_block *	sbp,
		char *	data
	)

Definition at line 842 of file super.c.

void nilfs_warning	(	struct super_block *	sb,
		const char *	function,
		const char *	fmt,
			...
	)

Definition at line 140 of file super.c.

Variable Documentation

struct kmem_cache* nilfs_btree_path_cache

Definition at line 73 of file super.c.

struct file_system_type nilfs_fs_type

Initial value:

= {
    .owner    = THIS_MODULE,
    .name     = "nilfs2",
    .mount    = nilfs_mount,
    .kill_sb  = kill_block_super,
    .fs_flags = FS_REQUIRES_DEV,
}

Definition at line 1357 of file super.c.

struct kmem_cache* nilfs_segbuf_cachep

Definition at line 72 of file super.c.

struct kmem_cache* nilfs_transaction_cachep

Definition at line 71 of file super.c.