jfs_xtree.c File Reference

#include <linux/fs.h>
#include <linux/module.h>
#include <linux/quotaops.h>
#include <linux/seq_file.h>
#include "jfs_incore.h"
#include "jfs_filsys.h"
#include "jfs_metapage.h"
#include "jfs_dmap.h"
#include "jfs_dinode.h"
#include "jfs_superblock.h"
#include "jfs_debug.h"

Go to the source code of this file.

Data Structures
struct	xtsplit

Macros
#define	XT_INSERT   0x00000001
#define	XT_CMP(CMP, K, X, OFFSET64)
#define	XT_PUTENTRY(XAD, FLAG, OFF, LEN, ADDR)
#define	XT_PAGE(IP, MP)   BT_PAGE(IP, MP, xtpage_t, i_xtroot)
#define	XT_GETPAGE(IP, BN, MP, SIZE, P, RC)
#define	XT_PUTPAGE(MP)   BT_PUTPAGE(MP)
#define	XT_GETSEARCH(IP, LEAF, BN, MP, P, INDEX)   BT_GETSEARCH(IP, LEAF, BN, MP, xtpage_t, P, INDEX, i_xtroot)
#define	MAX_TRUNCATE_LEAVES   50

Functions
int	xtLookup (struct inode *ip, s64 lstart, s64 llen, int *pflag, s64 *paddr, s32 *plen, int no_check)
int	xtInsert (tid_t tid, struct inode *ip, int xflag, s64 xoff, s32 xlen, s64 *xaddrp, int flag)
int	xtExtend (tid_t tid, struct inode *ip, s64 xoff, s32 xlen, int flag)
int	xtUpdate (tid_t tid, struct inode *ip, xad_t *nxad)
int	xtAppend (tid_t tid, struct inode *ip, int xflag, s64 xoff, s32 maxblocks, s32 *xlenp, s64 *xaddrp, int flag)
void	xtInitRoot (tid_t tid, struct inode *ip)
s64	xtTruncate (tid_t tid, struct inode *ip, s64 newsize, int flag)
s64	xtTruncate_pmap (tid_t tid, struct inode *ip, s64 committed_size)

Macro Definition Documentation

#define MAX_TRUNCATE_LEAVES   50

Definition at line 3114 of file jfs_xtree.c.

#define XT_CMP	(		CMP,
			K,
			X,
			OFFSET64
	)

Value:

{\
    OFFSET64 = offsetXAD(X);\
    (CMP) = ((K) >= OFFSET64 + lengthXAD(X)) ? 1 :\
        ((K) < OFFSET64) ? -1 : 0;\
}

Definition at line 47 of file jfs_xtree.c.

#define XT_GETPAGE	(		IP,
			BN,
			MP,
			SIZE,
			P,
			RC
	)

Value:

{\
    BT_GETPAGE(IP, BN, MP, xtpage_t, SIZE, P, RC, i_xtroot)\
    if (!(RC))\
    {\
        if ((le16_to_cpu((P)->header.nextindex) < XTENTRYSTART) ||\
            (le16_to_cpu((P)->header.nextindex) > le16_to_cpu((P)->header.maxentry)) ||\
            (le16_to_cpu((P)->header.maxentry) > (((BN)==0)?XTROOTMAXSLOT:PSIZE>>L2XTSLOTSIZE)))\
        {\
            jfs_error((IP)->i_sb, "XT_GETPAGE: xtree page corrupt");\
            BT_PUTPAGE(MP);\
            MP = NULL;\
			RC = -EIO;\
        }\
    }\
}

Definition at line 67 of file jfs_xtree.c.

#define XT_GETSEARCH	(		IP,
			LEAF,
			BN,
			MP,
			P,
			INDEX
	)		BT_GETSEARCH(IP, LEAF, BN, MP, xtpage_t, P, INDEX, i_xtroot)

Definition at line 87 of file jfs_xtree.c.

#define XT_INSERT   0x00000001

Definition at line 37 of file jfs_xtree.c.

#define XT_PAGE	(		IP,
			MP
	)		BT_PAGE(IP, MP, xtpage_t, i_xtroot)

Definition at line 63 of file jfs_xtree.c.

#define XT_PUTENTRY	(		XAD,
			FLAG,
			OFF,
			LEN,
			ADDR
	)

Value:

{\
    (XAD)->flag = (FLAG);\
    XADoffset((XAD), (OFF));\
    XADlength((XAD), (LEN));\
    XADaddress((XAD), (ADDR));\
}

Definition at line 55 of file jfs_xtree.c.

#define XT_PUTPAGE

(

MP

)

BT_PUTPAGE(MP)

Definition at line 85 of file jfs_xtree.c.

Function Documentation

int xtAppend	(	tid_t	tid,
		struct inode *	ip,
		int	xflag,
		s64	xoff,
		s32	maxblocks,
		s32 *	xlenp,
		s64 *	xaddrp,
		int	flag
	)

Definition at line 2170 of file jfs_xtree.c.

int xtExtend	(	tid_t	tid,
		struct inode *	ip,
		s64	xoff,
		s32	xlen,
		int	flag
	)

Definition at line 1359 of file jfs_xtree.c.

void xtInitRoot	(	tid_t	tid,
		struct inode *	ip
	)

Definition at line 3074 of file jfs_xtree.c.

int xtInsert	(	tid_t	tid,
		struct inode *	ip,
		int	xflag,
		s64	xoff,
		s32	xlen,
		s64 *	xaddrp,
		int	flag
	)

Definition at line 536 of file jfs_xtree.c.

int xtLookup	(	struct inode *	ip,
		s64	lstart,
		s64	llen,
		int *	pflag,
		s64 *	paddr,
		s32 *	plen,
		int	no_check
	)

Definition at line 145 of file jfs_xtree.c.

s64 xtTruncate	(	tid_t	tid,
		struct inode *	ip,
		s64	newsize,
		int	flag
	)

Definition at line 3163 of file jfs_xtree.c.

s64 xtTruncate_pmap	(	tid_t	tid,
		struct inode *	ip,
		s64	committed_size
	)

Definition at line 3719 of file jfs_xtree.c.

int xtUpdate	(	tid_t	tid,
		struct inode *	ip,
		xad_t *	nxad
	)

Definition at line 1705 of file jfs_xtree.c.