super.c File Reference

#include <linux/bio.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/completion.h>
#include <linux/buffer_head.h>
#include <linux/statfs.h>
#include <linux/seq_file.h>
#include <linux/mount.h>
#include <linux/kthread.h>
#include <linux/delay.h>
#include <linux/gfs2_ondisk.h>
#include <linux/crc32.h>
#include <linux/time.h>
#include <linux/wait.h>
#include <linux/writeback.h>
#include <linux/backing-dev.h>
#include "gfs2.h"
#include "incore.h"
#include "bmap.h"
#include "dir.h"
#include "glock.h"
#include "glops.h"
#include "inode.h"
#include "log.h"
#include "meta_io.h"
#include "quota.h"
#include "recovery.h"
#include "rgrp.h"
#include "super.h"
#include "trans.h"
#include "util.h"
#include "sys.h"
#include "xattr.h"

Go to the source code of this file.

Data Structures
struct	lfcc

Macros
#define	args_neq(a1, a2, x)   ((a1)->ar_##x != (a2)->ar_##x)

Enumerations
enum	{   Opt_lockproto, Opt_locktable, Opt_hostdata, Opt_spectator,   Opt_ignore_local_fs, Opt_localflocks, Opt_localcaching, Opt_debug,   Opt_nodebug, Opt_upgrade, Opt_acl, Opt_noacl,   Opt_quota_off, Opt_quota_account, Opt_quota_on, Opt_quota,   Opt_noquota, Opt_suiddir, Opt_nosuiddir, Opt_data_writeback,   Opt_data_ordered, Opt_meta, Opt_discard, Opt_nodiscard,   Opt_commit, Opt_err_withdraw, Opt_err_panic, Opt_statfs_quantum,   Opt_statfs_percent, Opt_quota_quantum, Opt_barrier, Opt_nobarrier,   Opt_rgrplvb, Opt_norgrplvb, Opt_error }

Functions
int	gfs2_mount_args (struct gfs2_args *args, char *options)
void	gfs2_jindex_free (struct gfs2_sbd *sdp)
struct gfs2_jdesc *	gfs2_jdesc_find (struct gfs2_sbd *sdp, unsigned int jid)
int	gfs2_jdesc_check (struct gfs2_jdesc *jd)
int	gfs2_make_fs_rw (struct gfs2_sbd *sdp)
void	gfs2_statfs_change_in (struct gfs2_statfs_change_host *sc, const void *buf)
int	gfs2_statfs_init (struct gfs2_sbd *sdp)
void	gfs2_statfs_change (struct gfs2_sbd *sdp, s64 total, s64 free, s64 dinodes)
void	update_statfs (struct gfs2_sbd *sdp, struct buffer_head *m_bh, struct buffer_head *l_bh)
int	gfs2_statfs_sync (struct super_block *sb, int type)
int	gfs2_freeze_fs (struct gfs2_sbd *sdp)
void	gfs2_unfreeze_fs (struct gfs2_sbd *sdp)
void	gfs2_dinode_out (const struct gfs2_inode *ip, void *buf)

Variables
struct super_operations	gfs2_super_ops

Macro Definition Documentation

#define args_neq	(		a1,
			a2,
			x
	)		((a1)->ar_##x != (a2)->ar_##x)

Definition at line 46 of file super.c.

Enumeration Type Documentation

anonymous enum

Enumerator:

Opt_lockproto
Opt_locktable
Opt_hostdata
Opt_spectator
Opt_ignore_local_fs
Opt_localflocks
Opt_localcaching
Opt_debug
Opt_nodebug
Opt_upgrade
Opt_acl
Opt_noacl
Opt_quota_off
Opt_quota_account
Opt_quota_on
Opt_quota
Opt_noquota
Opt_suiddir
Opt_nosuiddir
Opt_data_writeback
Opt_data_ordered
Opt_meta
Opt_discard
Opt_nodiscard
Opt_commit
Opt_err_withdraw
Opt_err_panic
Opt_statfs_quantum
Opt_statfs_percent
Opt_quota_quantum
Opt_barrier
Opt_nobarrier
Opt_rgrplvb
Opt_norgrplvb
Opt_error

Definition at line 48 of file super.c.

Function Documentation

void gfs2_dinode_out	(	const struct gfs2_inode *	ip,
		void *	buf
	)

Definition at line 714 of file super.c.

int gfs2_freeze_fs

(

struct gfs2_sbd *

sdp

)

gfs2_freeze_fs - freezes the file system : the file system

This function flushes data and meta data for all machines by acquiring the transaction log exclusively. All journals are ensured to be in a clean state as well.

Returns: errno

Definition at line 677 of file super.c.

int gfs2_jdesc_check

(

struct gfs2_jdesc *

jd

)

Definition at line 353 of file super.c.

struct gfs2_jdesc* gfs2_jdesc_find ( struct gfs2_sbd *  sdp, unsigned int  jid  )

read

Definition at line 342 of file super.c.

void gfs2_jindex_free

(

struct gfs2_sbd *

sdp

)

gfs2_jindex_free - Clear all the journal index information : The GFS2 superblock

Definition at line 296 of file super.c.

int gfs2_make_fs_rw

(

struct gfs2_sbd *

sdp

)

gfs2_make_fs_rw - Turn a Read-Only FS into a Read-Write one : the filesystem

Returns: errno

Definition at line 379 of file super.c.

int gfs2_mount_args	(	struct gfs2_args *	args,
		char *	options
	)

gfs2_mount_args - Parse mount options : The structure into which the parsed options will be written : The options to parse

Return: errno

Definition at line 133 of file super.c.

void gfs2_statfs_change	(	struct gfs2_sbd *	sdp,
		s64	total,
		s64	free,
		s64	dinodes
	)

Definition at line 488 of file super.c.

void gfs2_statfs_change_in	(	struct gfs2_statfs_change_host *	sc,
		const void *	buf
	)

Definition at line 424 of file super.c.

int gfs2_statfs_init

(

struct gfs2_sbd *

sdp

)

Definition at line 442 of file super.c.

int gfs2_statfs_sync	(	struct super_block *	sb,
		int	type
	)

Definition at line 546 of file super.c.

void gfs2_unfreeze_fs

(

struct gfs2_sbd *

sdp

)

gfs2_unfreeze_fs - unfreezes the file system : the file system

This function allows the file system to proceed by unlocking the exclusively held transaction lock. Other GFS2 nodes are now free to acquire the lock shared and go on with their lives.

Definition at line 704 of file super.c.

void update_statfs	(	struct gfs2_sbd *	sdp,
		struct buffer_head *	m_bh,
		struct buffer_head *	l_bh
	)

Definition at line 523 of file super.c.

Variable Documentation

struct super_operations gfs2_super_ops

Initial value:

= {
    .alloc_inode        = gfs2_alloc_inode,
    .destroy_inode      = gfs2_destroy_inode,
    .write_inode        = gfs2_write_inode,
    .dirty_inode        = gfs2_dirty_inode,
    .evict_inode        = gfs2_evict_inode,
    .put_super      = gfs2_put_super,
    .sync_fs        = gfs2_sync_fs,
    .freeze_fs      = gfs2_freeze,
    .unfreeze_fs        = gfs2_unfreeze,
    .statfs         = gfs2_statfs,
    .remount_fs     = gfs2_remount_fs,
    .drop_inode     = gfs2_drop_inode,
    .show_options       = gfs2_show_options,
}

Definition at line 1618 of file super.c.