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linux/fs/jfs/jfs_xtree.h

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-27 08:55:05 +02:00
/* SPDX-License-Identifier: GPL-2.0-or-later */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
/*
JFS: White space cleanup Removed trailing spaces & tabs, and spaces preceding tabs. Also a couple very minor comment cleanups. Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com> (cherry picked from f74156539964d7b3d5164fdf8848e6a682f75b97 commit)
2006-10-02 16:55:27 +02:00
* Copyright (C) International Business Machines Corp., 2000-2002
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
*/
#ifndef _H_JFS_XTREE
#define _H_JFS_XTREE
/*
JFS: Whitespace cleanup and remove some dead code Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
2007-06-06 22:28:35 +02:00
* jfs_xtree.h: extent allocation descriptor B+-tree manager
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
*/
#include "jfs_btree.h"
/*
JFS: Whitespace cleanup and remove some dead code Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
2007-06-06 22:28:35 +02:00
* extent allocation descriptor (xad)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
*/
typedef struct xad {
jfs: get rid of homegrown endianness helpers Get rid of le24 stuff, along with the bitfields use - all that stuff can be done with standard stuff, in sparse-verifiable manner. Moreover, that way (shift-and-mask) often generates better code - gcc optimizer sucks on bitfields... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com> ----
2014-12-19 07:51:26 +01:00
__u8 flag; /* 1: flag */
__u8 rsvrd[2]; /* 2: reserved */
__u8 off1; /* 1: offset in unit of fsblksize */
__le32 off2; /* 4: offset in unit of fsblksize */
pxd_t loc; /* 8: length and address in unit of fsblksize */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
} xad_t; /* (16) */
JFS: Whitespace cleanup and remove some dead code Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
2007-06-06 22:28:35 +02:00
#define MAXXLEN ((1 << 24) - 1)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
JFS: Whitespace cleanup and remove some dead code Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
2007-06-06 22:28:35 +02:00
#define XTSLOTSIZE 16
#define L2XTSLOTSIZE 4
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
/* xad_t field construction */
#define XADoffset(xad, offset64)\
{\
JFS: Whitespace cleanup and remove some dead code Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
2007-06-06 22:28:35 +02:00
(xad)->off1 = ((u64)offset64) >> 32;\
(xad)->off2 = __cpu_to_le32((offset64) & 0xffffffff);\
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
}
jfs: get rid of homegrown endianness helpers Get rid of le24 stuff, along with the bitfields use - all that stuff can be done with standard stuff, in sparse-verifiable manner. Moreover, that way (shift-and-mask) often generates better code - gcc optimizer sucks on bitfields... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com> ----
2014-12-19 07:51:26 +01:00
#define XADaddress(xad, address64) PXDaddress(&(xad)->loc, address64)
#define XADlength(xad, length32) PXDlength(&(xad)->loc, length32)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
/* xad_t field extraction */
#define offsetXAD(xad)\
JFS: Whitespace cleanup and remove some dead code Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
2007-06-06 22:28:35 +02:00
( ((s64)((xad)->off1)) << 32 | __le32_to_cpu((xad)->off2))
jfs: get rid of homegrown endianness helpers Get rid of le24 stuff, along with the bitfields use - all that stuff can be done with standard stuff, in sparse-verifiable manner. Moreover, that way (shift-and-mask) often generates better code - gcc optimizer sucks on bitfields... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com> ----
2014-12-19 07:51:26 +01:00
#define addressXAD(xad) addressPXD(&(xad)->loc)
#define lengthXAD(xad) lengthPXD(&(xad)->loc)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
/* xad list */
struct xadlist {
s16 maxnxad;
s16 nxad;
xad_t *xad;
};
/* xad_t flags */
JFS: Whitespace cleanup and remove some dead code Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
2007-06-06 22:28:35 +02:00
#define XAD_NEW 0x01 /* new */
#define XAD_EXTENDED 0x02 /* extended */
#define XAD_COMPRESSED 0x04 /* compressed with recorded length */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
#define XAD_NOTRECORDED 0x08 /* allocated but not recorded */
JFS: Whitespace cleanup and remove some dead code Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
2007-06-06 22:28:35 +02:00
#define XAD_COW 0x10 /* copy-on-write */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
/* possible values for maxentry */
JFS: Whitespace cleanup and remove some dead code Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
2007-06-06 22:28:35 +02:00
#define XTROOTINITSLOT_DIR 6
#define XTROOTINITSLOT 10
#define XTROOTMAXSLOT 18
#define XTPAGEMAXSLOT 256
#define XTENTRYSTART 2
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
/*
JFS: Whitespace cleanup and remove some dead code Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
2007-06-06 22:28:35 +02:00
* xtree page:
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
*/
typedef union {
struct xtheader {
__le64 next; /* 8: */
__le64 prev; /* 8: */
u8 flag; /* 1: */
u8 rsrvd1; /* 1: */
__le16 nextindex; /* 2: next index = number of entries */
__le16 maxentry; /* 2: max number of entries */
__le16 rsrvd2; /* 2: */
pxd_t self; /* 8: self */
} header; /* (32) */
xad_t xad[XTROOTMAXSLOT]; /* 16 * maxentry: xad array */
} xtpage_t;
/*
JFS: Whitespace cleanup and remove some dead code Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
2007-06-06 22:28:35 +02:00
* external declaration
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 00:20:36 +02:00
*/
extern int xtLookup(struct inode *ip, s64 lstart, s64 llen,
int *pflag, s64 * paddr, int *plen, int flag);
extern void xtInitRoot(tid_t tid, struct inode *ip);
extern int xtInsert(tid_t tid, struct inode *ip,
int xflag, s64 xoff, int xlen, s64 * xaddrp, int flag);
extern int xtExtend(tid_t tid, struct inode *ip, s64 xoff, int xlen,
int flag);
#ifdef _NOTYET
extern int xtTailgate(tid_t tid, struct inode *ip,
s64 xoff, int xlen, s64 xaddr, int flag);
#endif
extern int xtUpdate(tid_t tid, struct inode *ip, struct xad *nxad);
extern int xtDelete(tid_t tid, struct inode *ip, s64 xoff, int xlen,
int flag);
extern s64 xtTruncate(tid_t tid, struct inode *ip, s64 newsize, int type);
extern s64 xtTruncate_pmap(tid_t tid, struct inode *ip, s64 committed_size);
extern int xtRelocate(tid_t tid, struct inode *ip,
xad_t * oxad, s64 nxaddr, int xtype);
extern int xtAppend(tid_t tid,
struct inode *ip, int xflag, s64 xoff, int maxblocks,
int *xlenp, s64 * xaddrp, int flag);
#endif /* !_H_JFS_XTREE */