segbuf.h File Reference

#include <linux/fs.h>
#include <linux/buffer_head.h>
#include <linux/bio.h>
#include <linux/completion.h>

Go to the source code of this file.

Data Structures
struct	nilfs_segsum_info
struct	nilfs_segment_buffer

Macros
#define	NILFS_LIST_SEGBUF(head)   list_entry((head), struct nilfs_segment_buffer, sb_list)
#define	NILFS_NEXT_SEGBUF(segbuf)   NILFS_LIST_SEGBUF((segbuf)->sb_list.next)
#define	NILFS_PREV_SEGBUF(segbuf)   NILFS_LIST_SEGBUF((segbuf)->sb_list.prev)
#define	NILFS_LAST_SEGBUF(head)   NILFS_LIST_SEGBUF((head)->prev)
#define	NILFS_FIRST_SEGBUF(head)   NILFS_LIST_SEGBUF((head)->next)
#define	NILFS_SEGBUF_IS_LAST(segbuf, head)   ((segbuf)->sb_list.next == (head))
#define	nilfs_for_each_segbuf_before(s, t, h)
#define	NILFS_SEGBUF_FIRST_BH(head)   (list_entry((head)->next, struct buffer_head, b_assoc_buffers))
#define	NILFS_SEGBUF_NEXT_BH(bh)
#define	NILFS_SEGBUF_BH_IS_LAST(bh, head)   ((bh)->b_assoc_buffers.next == head)

Functions
struct nilfs_segment_buffer *	nilfs_segbuf_new (struct super_block *)
void	nilfs_segbuf_free (struct nilfs_segment_buffer *)
void	nilfs_segbuf_map (struct nilfs_segment_buffer *, __u64, unsigned long, struct the_nilfs *)
void	nilfs_segbuf_map_cont (struct nilfs_segment_buffer *segbuf, struct nilfs_segment_buffer *prev)
void	nilfs_segbuf_set_next_segnum (struct nilfs_segment_buffer *, __u64, struct the_nilfs *)
int	nilfs_segbuf_reset (struct nilfs_segment_buffer *, unsigned, time_t, __u64)
int	nilfs_segbuf_extend_segsum (struct nilfs_segment_buffer *)
int	nilfs_segbuf_extend_payload (struct nilfs_segment_buffer *, struct buffer_head **)
void	nilfs_segbuf_fill_in_segsum (struct nilfs_segment_buffer *)
void	nilfs_clear_logs (struct list_head *logs)
void	nilfs_truncate_logs (struct list_head *logs, struct nilfs_segment_buffer *last)
int	nilfs_write_logs (struct list_head *logs, struct the_nilfs *nilfs)
int	nilfs_wait_on_logs (struct list_head *logs)
void	nilfs_add_checksums_on_logs (struct list_head *logs, u32 seed)

Variables
struct kmem_cache *	nilfs_segbuf_cachep

Macro Definition Documentation

#define NILFS_FIRST_SEGBUF

(

head

)

NILFS_LIST_SEGBUF((head)->next)

Definition at line 103 of file segbuf.h.

#define nilfs_for_each_segbuf_before	(		s,
			t,
			h
	)

Value:

for ((s) = NILFS_FIRST_SEGBUF(h); (s) != (t); \
         (s) = NILFS_NEXT_SEGBUF(s))

Definition at line 106 of file segbuf.h.

#define NILFS_LAST_SEGBUF

(

head

)

NILFS_LIST_SEGBUF((head)->prev)

Definition at line 102 of file segbuf.h.

#define NILFS_LIST_SEGBUF

(

head

)

list_entry((head), struct nilfs_segment_buffer, sb_list)

Definition at line 98 of file segbuf.h.

#define NILFS_NEXT_SEGBUF

(

segbuf

)

NILFS_LIST_SEGBUF((segbuf)->sb_list.next)

Definition at line 100 of file segbuf.h.

#define NILFS_PREV_SEGBUF

(

segbuf

)

NILFS_LIST_SEGBUF((segbuf)->sb_list.prev)

Definition at line 101 of file segbuf.h.

#define NILFS_SEGBUF_BH_IS_LAST	(		bh,
			head
	)		((bh)->b_assoc_buffers.next == head)

Definition at line 115 of file segbuf.h.

#define NILFS_SEGBUF_FIRST_BH

(

head

)

(list_entry((head)->next, struct buffer_head, b_assoc_buffers))

Definition at line 110 of file segbuf.h.

#define NILFS_SEGBUF_IS_LAST	(		segbuf,
			head
	)		((segbuf)->sb_list.next == (head))

Definition at line 104 of file segbuf.h.

#define NILFS_SEGBUF_NEXT_BH

(

bh

)

Value:

(list_entry((bh)->b_assoc_buffers.next, struct buffer_head, \
            b_assoc_buffers))

Definition at line 112 of file segbuf.h.

Function Documentation

void nilfs_add_checksums_on_logs	(	struct list_head *	logs,
		u32	seed
	)

nilfs_add_checksums_on_logs - add checksums on the logs : list of segment buffers storing target logs : checksum seed value

Definition at line 326 of file segbuf.c.

void nilfs_clear_logs

(

struct list_head *

logs

)

Definition at line 274 of file segbuf.c.

int nilfs_segbuf_extend_payload	(	struct nilfs_segment_buffer *	,
		struct buffer_head **
	)

Definition at line 121 of file segbuf.c.

int nilfs_segbuf_extend_segsum

(

struct nilfs_segment_buffer *

)

Definition at line 108 of file segbuf.c.

void nilfs_segbuf_fill_in_segsum

(

struct nilfs_segment_buffer *

)

Definition at line 157 of file segbuf.c.

void nilfs_segbuf_free

(

struct nilfs_segment_buffer *

)

Definition at line 68 of file segbuf.c.

void nilfs_segbuf_map	(	struct nilfs_segment_buffer *	,
		__u64	,
		unsigned	long,
		struct the_nilfs *
	)

Definition at line 73 of file segbuf.c.

void nilfs_segbuf_map_cont	(	struct nilfs_segment_buffer *	segbuf,
		struct nilfs_segment_buffer *	prev
	)

nilfs_segbuf_map_cont - map a new log behind a given log : new segment buffer : segment buffer containing a log to be continued

Definition at line 90 of file segbuf.c.

struct nilfs_segment_buffer* nilfs_segbuf_new ( struct super_block *  )

read

Definition at line 47 of file segbuf.c.

int nilfs_segbuf_reset	(	struct nilfs_segment_buffer *	,
		unsigned	,
		time_t	,
		__u64
	)

Definition at line 136 of file segbuf.c.

void nilfs_segbuf_set_next_segnum	(	struct nilfs_segment_buffer *	,
		__u64	,
		struct the_nilfs *
	)

Definition at line 101 of file segbuf.c.

void nilfs_truncate_logs	(	struct list_head *	logs,
		struct nilfs_segment_buffer *	last
	)

Definition at line 282 of file segbuf.c.

int nilfs_wait_on_logs

(

struct list_head *

logs

)

Definition at line 308 of file segbuf.c.

int nilfs_write_logs	(	struct list_head *	logs,
		struct the_nilfs *	nilfs
	)

Definition at line 295 of file segbuf.c.

Variable Documentation

struct kmem_cache* nilfs_segbuf_cachep

Definition at line 72 of file super.c.