#include <linux/types.h>
#include <linux/buffer_head.h>
#include <linux/rbtree.h>
#include <linux/fs.h>
#include <linux/blkdev.h>
#include <linux/backing-dev.h>
#include <linux/slab.h>

Data Structures
struct	the_nilfs

struct	nilfs_root

Macros
#define	THE_NILFS_FNS(bit, name)

#define	nilfs_clear_opt(nilfs, opt) do { (nilfs)->ns_mount_opt &= ~NILFS_MOUNT_##opt; } while (0)

#define	nilfs_set_opt(nilfs, opt) do { (nilfs)->ns_mount_opt \|= NILFS_MOUNT_##opt; } while (0)

#define	nilfs_test_opt(nilfs, opt) ((nilfs)->ns_mount_opt & NILFS_MOUNT_##opt)

#define	nilfs_write_opt(nilfs, mask, opt)

#define	NILFS_CPTREE_CURRENT_CNO 0

#define	NILFS_SB_FREQ 10

Enumerations
enum	{ THE_NILFS_INIT = 0, THE_NILFS_DISCONTINUED, THE_NILFS_GC_RUNNING, THE_NILFS_SB_DIRTY }

Functions
void	nilfs_set_last_segment (struct the_nilfs *, sector_t, u64, __u64)

struct the_nilfs *	alloc_nilfs (struct block_device *bdev)

void	destroy_nilfs (struct the_nilfs *nilfs)

int	init_nilfs (struct the_nilfs nilfs, struct super_block sb, char *data)

int	load_nilfs (struct the_nilfs nilfs, struct super_block sb)

unsigned long	nilfs_nrsvsegs (struct the_nilfs *nilfs, unsigned long nsegs)

void	nilfs_set_nsegments (struct the_nilfs *nilfs, unsigned long nsegs)

int	nilfs_discard_segments (struct the_nilfs , __u64 , size_t)

int	nilfs_count_free_blocks (struct the_nilfs , sector_t )

struct nilfs_root *	nilfs_lookup_root (struct the_nilfs *nilfs, __u64 cno)

struct nilfs_root *	nilfs_find_or_create_root (struct the_nilfs *nilfs, __u64 cno)

void	nilfs_put_root (struct nilfs_root *root)

int	nilfs_near_disk_full (struct the_nilfs *)

void	nilfs_fall_back_super_block (struct the_nilfs *)

void	nilfs_swap_super_block (struct the_nilfs *)

Macro Definition Documentation

#define nilfs_clear_opt	(	nilfs,
		opt
	)	do { (nilfs)->ns_mount_opt &= ~NILFS_MOUNT_##opt; } while (0)

Definition at line 215 of file the_nilfs.h.

#define NILFS_CPTREE_CURRENT_CNO 0

Definition at line 249 of file the_nilfs.h.

#define NILFS_SB_FREQ 10

Definition at line 252 of file the_nilfs.h.

#define nilfs_set_opt	(	nilfs,
		opt
	)	do { (nilfs)->ns_mount_opt \|= NILFS_MOUNT_##opt; } while (0)

Definition at line 217 of file the_nilfs.h.

#define nilfs_test_opt	(	nilfs,
		opt
	)	((nilfs)->ns_mount_opt & NILFS_MOUNT_##opt)

Definition at line 219 of file the_nilfs.h.

#define nilfs_write_opt	(	nilfs,
		mask,
		opt
	)

Value:

do { (nilfs)->ns_mount_opt =                    \
        (((nilfs)->ns_mount_opt & ~NILFS_MOUNT_##mask) |    \
         NILFS_MOUNT_##opt);                    \
    } while (0)

Definition at line 220 of file the_nilfs.h.

#define THE_NILFS_FNS	(	bit,
		name
	)

Value:

static inline void set_nilfs_##name(struct the_nilfs *nilfs)        \
{                                   \
    set_bit(THE_NILFS_##bit, &(nilfs)->ns_flags);           \
}                                   \
static inline void clear_nilfs_##name(struct the_nilfs *nilfs)      \
{                                   \
    clear_bit(THE_NILFS_##bit, &(nilfs)->ns_flags);         \
}                                   \
static inline int nilfs_##name(struct the_nilfs *nilfs)         \
{                                   \
    return test_bit(THE_NILFS_##bit, &(nilfs)->ns_flags);       \
}

Definition at line 193 of file the_nilfs.h.

Enumeration Type Documentation

anonymous enum

Enumerator:

THE_NILFS_INIT
THE_NILFS_DISCONTINUED
THE_NILFS_GC_RUNNING
THE_NILFS_SB_DIRTY

Definition at line 38 of file the_nilfs.h.

Function Documentation

struct the_nilfs* alloc_nilfs ( struct block_device * bdev )

read

alloc_nilfs - allocate a nilfs object : block device to which the_nilfs is related

Return Value: On success, pointer to the_nilfs is returned. On error, NULL is returned.

Definition at line 68 of file the_nilfs.c.

void destroy_nilfs ( struct the_nilfs * nilfs )

destroy_nilfs - destroy nilfs object : nilfs object to be released

Definition at line 96 of file the_nilfs.c.

int init_nilfs	(	struct the_nilfs *	nilfs,
		struct super_block *	sb,
		char *	data
	)

init_nilfs - initialize a NILFS instance. : the_nilfs structure : super block : mount options

init_nilfs() performs common initialization per block device (e.g. reading the super block, getting disk layout information, initializing shared fields in the_nilfs).

Return Value: On success, 0 is returned. On error, a negative error code is returned.

Definition at line 561 of file the_nilfs.c.

int load_nilfs	(	struct the_nilfs *	nilfs,
		struct super_block *	sb
	)

load_nilfs - load and recover the nilfs : the_nilfs structure to be released : super block isntance used to recover past segment

load_nilfs() searches and load the latest super root, attaches the last segment, and does recovery if needed. The caller must call this exclusively for simultaneous mounts.

Definition at line 211 of file the_nilfs.c.

int nilfs_count_free_blocks	(	struct the_nilfs *	,
		sector_t *
	)

Definition at line 681 of file the_nilfs.c.

int nilfs_discard_segments	(	struct the_nilfs *	,
		__u64 *	,
		size_t
	)

Definition at line 644 of file the_nilfs.c.

void nilfs_fall_back_super_block ( struct the_nilfs * )

Definition at line 464 of file the_nilfs.c.

struct nilfs_root* nilfs_find_or_create_root	(	struct the_nilfs *	nilfs,
		__u64	cno
	)

read

Definition at line 729 of file the_nilfs.c.

struct nilfs_root* nilfs_lookup_root	(	struct the_nilfs *	nilfs,
		__u64	cno
	)

read

Definition at line 703 of file the_nilfs.c.

int nilfs_near_disk_full ( struct the_nilfs * )

Definition at line 692 of file the_nilfs.c.

unsigned long nilfs_nrsvsegs	(	struct the_nilfs *	nilfs,
		unsigned long	nsegs
	)

nilfs_nrsvsegs - calculate the number of reserved segments : nilfs object : total number of segments

Definition at line 372 of file the_nilfs.c.

void nilfs_put_root ( struct nilfs_root * root )

Definition at line 778 of file the_nilfs.c.

void nilfs_set_last_segment	(	struct the_nilfs *	,
		sector_t	,
		u64	,
		__u64
	)

Definition at line 41 of file the_nilfs.c.

void nilfs_set_nsegments	(	struct the_nilfs *	nilfs,
		unsigned long	nsegs
	)

Definition at line 379 of file the_nilfs.c.

void nilfs_swap_super_block ( struct the_nilfs * )

Definition at line 473 of file the_nilfs.c.

Data Structures

Macros

Enumerations

Functions

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation