jfs_imap.h File Reference

#include "jfs_txnmgr.h"

Go to the source code of this file.

Data Structures
struct	iag
struct	iagctl_disk
struct	iagctl
struct	dinomap_disk
struct	dinomap
struct	inomap

Macros
#define	EXTSPERIAG   128 /* number of disk inode extent per iag */
#define	IMAPBLKNO   0 /* lblkno of dinomap within inode map */
#define	SMAPSZ   4 /* number of words per summary map */
#define	EXTSPERSUM   32 /* number of extents per summary map entry */
#define	L2EXTSPERSUM   5 /* l2 number of extents per summary map */
#define	PGSPERIEXT   4 /* number of 4K pages per dinode extent */
#define	MAXIAGS   ((1<<20)-1) /* maximum number of iags */
#define	MAXAG   128 /* maximum number of allocation groups */
#define	AMAPSIZE   512 /* bytes in the IAG allocation maps */
#define	SMAPSIZE   16 /* bytes in the IAG summary maps */
#define	INOTOIAG(ino)   ((ino) >> L2INOSPERIAG)
#define	IAGTOLBLK(iagno, l2nbperpg)   (((iagno) + 1) << (l2nbperpg))
#define	INOPBLK(pxd, ino, l2nbperpg)
#define	im_freeiag   im_imap.in_freeiag
#define	im_nextiag   im_imap.in_nextiag
#define	im_agctl   im_imap.in_agctl
#define	im_nbperiext   im_imap.in_nbperiext
#define	im_l2nbperiext   im_imap.in_l2nbperiext
#define	im_diskblock   im_imap.in_diskblock
#define	im_maxag   im_imap.in_maxag

Functions
int	diFree (struct inode *)
int	diAlloc (struct inode *, bool, struct inode *)
int	diSync (struct inode *)
int	diUpdatePMap (struct inode *ipimap, unsigned long inum, bool is_free, struct tblock *tblk)
int	diExtendFS (struct inode *ipimap, struct inode *ipbmap)
int	diMount (struct inode *)
int	diUnmount (struct inode *, int)
int	diRead (struct inode *)
struct inode *	diReadSpecial (struct super_block *, ino_t, int)
void	diWriteSpecial (struct inode *, int)
void	diFreeSpecial (struct inode *)
int	diWrite (tid_t tid, struct inode *)

Macro Definition Documentation

#define AMAPSIZE   512 /* bytes in the IAG allocation maps */

Definition at line 36 of file jfs_imap.h.

#define EXTSPERIAG   128 /* number of disk inode extent per iag */

Definition at line 27 of file jfs_imap.h.

#define EXTSPERSUM   32 /* number of extents per summary map entry */

Definition at line 30 of file jfs_imap.h.

#define IAGTOLBLK	(		iagno,
			l2nbperpg
	)		(((iagno) + 1) << (l2nbperpg))

Definition at line 43 of file jfs_imap.h.

#define im_agctl   im_imap.in_agctl

Definition at line 152 of file jfs_imap.h.

#define im_diskblock   im_imap.in_diskblock

Definition at line 158 of file jfs_imap.h.

#define im_freeiag   im_imap.in_freeiag

Definition at line 150 of file jfs_imap.h.

#define im_l2nbperiext   im_imap.in_l2nbperiext

Definition at line 154 of file jfs_imap.h.

#define im_maxag   im_imap.in_maxag

Definition at line 159 of file jfs_imap.h.

#define im_nbperiext   im_imap.in_nbperiext

Definition at line 153 of file jfs_imap.h.

#define im_nextiag   im_imap.in_nextiag

Definition at line 151 of file jfs_imap.h.

#define IMAPBLKNO   0 /* lblkno of dinomap within inode map */

Definition at line 28 of file jfs_imap.h.

#define INOPBLK	(		pxd,
			ino,
			l2nbperpg
	)

Value:

(addressPXD((pxd)) +        \
    ((((ino) & (INOSPEREXT-1)) >> L2INOSPERPAGE) << (l2nbperpg)))

Definition at line 48 of file jfs_imap.h.

#define INOTOIAG

(

ino

)

((ino) >> L2INOSPERIAG)

Definition at line 40 of file jfs_imap.h.

#define L2EXTSPERSUM   5 /* l2 number of extents per summary map */

Definition at line 31 of file jfs_imap.h.

#define MAXAG   128 /* maximum number of allocation groups */

Definition at line 34 of file jfs_imap.h.

#define MAXIAGS   ((1<<20)-1) /* maximum number of iags */

Definition at line 33 of file jfs_imap.h.

#define PGSPERIEXT   4 /* number of 4K pages per dinode extent */

Definition at line 32 of file jfs_imap.h.

#define SMAPSIZE   16 /* bytes in the IAG summary maps */

Definition at line 37 of file jfs_imap.h.

#define SMAPSZ   4 /* number of words per summary map */

Definition at line 29 of file jfs_imap.h.

Function Documentation

int diAlloc	(	struct inode *	,
		bool	,
		struct inode *
	)

Definition at line 1343 of file jfs_imap.c.

int diExtendFS	(	struct inode *	ipimap,
		struct inode *	ipbmap
	)

Definition at line 2868 of file jfs_imap.c.

int diFree

(

struct inode *

)

Definition at line 863 of file jfs_imap.c.

void diFreeSpecial

(

struct inode *

)

Definition at line 562 of file jfs_imap.c.

int diMount

(

struct inode *

)

Definition at line 107 of file jfs_imap.c.

int diRead

(

struct inode *

)

Definition at line 304 of file jfs_imap.c.

struct inode* diReadSpecial ( struct super_block *  , ino_t  , int    )

read

Definition at line 429 of file jfs_imap.c.

int diSync

(

struct inode *

)

Definition at line 219 of file jfs_imap.c.

int diUnmount	(	struct inode *	,
		int
	)

Definition at line 191 of file jfs_imap.c.

int diUpdatePMap	(	struct inode *	ipimap,
		unsigned long	inum,
		bool	is_free,
		struct tblock *	tblk
	)

Definition at line 2743 of file jfs_imap.c.

int diWrite	(	tid_t	tid,
		struct inode *
	)

Definition at line 599 of file jfs_imap.c.

void diWriteSpecial	(	struct inode *	,
		int
	)

Definition at line 517 of file jfs_imap.c.