ext3: move headers to fs/ext3/
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
parent
f7699f2b01
commit
4613ad180d
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@ -4,13 +4,7 @@
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* Copyright (C) 2001-2003 Andreas Gruenbacher, <agruen@suse.de>
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*/
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#include <linux/init.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/capability.h>
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#include <linux/fs.h>
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#include <linux/ext3_jbd.h>
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#include <linux/ext3_fs.h>
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#include "ext3.h"
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#include "xattr.h"
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#include "acl.h"
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@ -11,17 +11,9 @@
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* David S. Miller (davem@caip.rutgers.edu), 1995
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*/
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#include <linux/time.h>
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#include <linux/capability.h>
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#include <linux/fs.h>
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#include <linux/slab.h>
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#include <linux/jbd.h>
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#include <linux/ext3_fs.h>
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#include <linux/ext3_jbd.h>
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#include <linux/quotaops.h>
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#include <linux/buffer_head.h>
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#include <linux/blkdev.h>
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#include <trace/events/ext3.h>
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#include "ext3.h"
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/*
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* balloc.c contains the blocks allocation and deallocation routines
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@ -7,9 +7,7 @@
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* Universite Pierre et Marie Curie (Paris VI)
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*/
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#include <linux/buffer_head.h>
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#include <linux/jbd.h>
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#include <linux/ext3_fs.h>
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#include "ext3.h"
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#ifdef EXT3FS_DEBUG
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@ -21,12 +21,7 @@
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*
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*/
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#include <linux/fs.h>
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#include <linux/jbd.h>
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#include <linux/ext3_fs.h>
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#include <linux/buffer_head.h>
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#include <linux/slab.h>
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#include <linux/rbtree.h>
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#include "ext3.h"
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static unsigned char ext3_filetype_table[] = {
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DT_UNKNOWN, DT_REG, DT_DIR, DT_CHR, DT_BLK, DT_FIFO, DT_SOCK, DT_LNK
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@ -1,5 +1,11 @@
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/*
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* linux/include/linux/ext3_fs.h
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* Written by Stephen C. Tweedie <sct@redhat.com>, 1999
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*
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* Copyright 1998--1999 Red Hat corp --- All Rights Reserved
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*
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* This file is part of the Linux kernel and is made available under
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* the terms of the GNU General Public License, version 2, or at your
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* option, any later version, incorporated herein by reference.
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*
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* Copyright (C) 1992, 1993, 1994, 1995
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* Remy Card (card@masi.ibp.fr)
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@ -13,12 +19,11 @@
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* Copyright (C) 1991, 1992 Linus Torvalds
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*/
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#ifndef _LINUX_EXT3_FS_H
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#define _LINUX_EXT3_FS_H
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#include <linux/types.h>
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#include <linux/fs.h>
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#include <linux/jbd.h>
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#include <linux/magic.h>
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#include <linux/bug.h>
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#include <linux/blockgroup_lock.h>
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/*
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* The second extended filesystem constants/structures
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@ -75,29 +80,12 @@
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#define EXT3_MIN_BLOCK_SIZE 1024
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#define EXT3_MAX_BLOCK_SIZE 65536
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#define EXT3_MIN_BLOCK_LOG_SIZE 10
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#ifdef __KERNEL__
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# define EXT3_BLOCK_SIZE(s) ((s)->s_blocksize)
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#else
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# define EXT3_BLOCK_SIZE(s) (EXT3_MIN_BLOCK_SIZE << (s)->s_log_block_size)
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#endif
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#define EXT3_BLOCK_SIZE(s) ((s)->s_blocksize)
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#define EXT3_ADDR_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (__u32))
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#ifdef __KERNEL__
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# define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits)
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#else
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# define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_log_block_size + 10)
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#endif
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#ifdef __KERNEL__
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#define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits)
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#define EXT3_ADDR_PER_BLOCK_BITS(s) (EXT3_SB(s)->s_addr_per_block_bits)
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#define EXT3_INODE_SIZE(s) (EXT3_SB(s)->s_inode_size)
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#define EXT3_FIRST_INO(s) (EXT3_SB(s)->s_first_ino)
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#else
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#define EXT3_INODE_SIZE(s) (((s)->s_rev_level == EXT3_GOOD_OLD_REV) ? \
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EXT3_GOOD_OLD_INODE_SIZE : \
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(s)->s_inode_size)
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#define EXT3_FIRST_INO(s) (((s)->s_rev_level == EXT3_GOOD_OLD_REV) ? \
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EXT3_GOOD_OLD_FIRST_INO : \
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(s)->s_first_ino)
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#endif
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/*
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* Macro-instructions used to manage fragments
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@ -105,13 +93,8 @@
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#define EXT3_MIN_FRAG_SIZE 1024
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#define EXT3_MAX_FRAG_SIZE 4096
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#define EXT3_MIN_FRAG_LOG_SIZE 10
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#ifdef __KERNEL__
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# define EXT3_FRAG_SIZE(s) (EXT3_SB(s)->s_frag_size)
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# define EXT3_FRAGS_PER_BLOCK(s) (EXT3_SB(s)->s_frags_per_block)
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#else
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# define EXT3_FRAG_SIZE(s) (EXT3_MIN_FRAG_SIZE << (s)->s_log_frag_size)
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# define EXT3_FRAGS_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / EXT3_FRAG_SIZE(s))
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#endif
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#define EXT3_FRAG_SIZE(s) (EXT3_SB(s)->s_frag_size)
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#define EXT3_FRAGS_PER_BLOCK(s) (EXT3_SB(s)->s_frags_per_block)
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/*
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* Structure of a blocks group descriptor
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@ -131,16 +114,10 @@ struct ext3_group_desc
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/*
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* Macro-instructions used to manage group descriptors
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*/
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#ifdef __KERNEL__
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# define EXT3_BLOCKS_PER_GROUP(s) (EXT3_SB(s)->s_blocks_per_group)
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# define EXT3_DESC_PER_BLOCK(s) (EXT3_SB(s)->s_desc_per_block)
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# define EXT3_INODES_PER_GROUP(s) (EXT3_SB(s)->s_inodes_per_group)
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# define EXT3_DESC_PER_BLOCK_BITS(s) (EXT3_SB(s)->s_desc_per_block_bits)
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#else
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# define EXT3_BLOCKS_PER_GROUP(s) ((s)->s_blocks_per_group)
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# define EXT3_DESC_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (struct ext3_group_desc))
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# define EXT3_INODES_PER_GROUP(s) ((s)->s_inodes_per_group)
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#endif
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#define EXT3_BLOCKS_PER_GROUP(s) (EXT3_SB(s)->s_blocks_per_group)
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#define EXT3_DESC_PER_BLOCK(s) (EXT3_SB(s)->s_desc_per_block)
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#define EXT3_INODES_PER_GROUP(s) (EXT3_SB(s)->s_inodes_per_group)
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#define EXT3_DESC_PER_BLOCK_BITS(s) (EXT3_SB(s)->s_desc_per_block_bits)
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/*
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* Constants relative to the data blocks
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@ -336,7 +313,6 @@ struct ext3_inode {
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#define i_size_high i_dir_acl
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#if defined(__KERNEL__) || defined(__linux__)
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#define i_reserved1 osd1.linux1.l_i_reserved1
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#define i_frag osd2.linux2.l_i_frag
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#define i_fsize osd2.linux2.l_i_fsize
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@ -346,24 +322,6 @@ struct ext3_inode {
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#define i_gid_high osd2.linux2.l_i_gid_high
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#define i_reserved2 osd2.linux2.l_i_reserved2
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#elif defined(__GNU__)
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#define i_translator osd1.hurd1.h_i_translator
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#define i_frag osd2.hurd2.h_i_frag;
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#define i_fsize osd2.hurd2.h_i_fsize;
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#define i_uid_high osd2.hurd2.h_i_uid_high
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#define i_gid_high osd2.hurd2.h_i_gid_high
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#define i_author osd2.hurd2.h_i_author
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#elif defined(__masix__)
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#define i_reserved1 osd1.masix1.m_i_reserved1
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#define i_frag osd2.masix2.m_i_frag
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#define i_fsize osd2.masix2.m_i_fsize
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#define i_reserved2 osd2.masix2.m_i_reserved2
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#endif /* defined(__KERNEL__) || defined(__linux__) */
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/*
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* File system states
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*/
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@ -531,9 +489,197 @@ struct ext3_super_block {
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__u32 s_reserved[162]; /* Padding to the end of the block */
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};
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#ifdef __KERNEL__
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#include <linux/ext3_fs_i.h>
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#include <linux/ext3_fs_sb.h>
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/* data type for block offset of block group */
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typedef int ext3_grpblk_t;
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/* data type for filesystem-wide blocks number */
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typedef unsigned long ext3_fsblk_t;
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#define E3FSBLK "%lu"
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struct ext3_reserve_window {
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ext3_fsblk_t _rsv_start; /* First byte reserved */
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ext3_fsblk_t _rsv_end; /* Last byte reserved or 0 */
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};
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struct ext3_reserve_window_node {
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struct rb_node rsv_node;
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__u32 rsv_goal_size;
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__u32 rsv_alloc_hit;
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struct ext3_reserve_window rsv_window;
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};
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struct ext3_block_alloc_info {
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/* information about reservation window */
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struct ext3_reserve_window_node rsv_window_node;
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/*
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* was i_next_alloc_block in ext3_inode_info
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* is the logical (file-relative) number of the
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* most-recently-allocated block in this file.
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* We use this for detecting linearly ascending allocation requests.
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*/
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__u32 last_alloc_logical_block;
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/*
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* Was i_next_alloc_goal in ext3_inode_info
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* is the *physical* companion to i_next_alloc_block.
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* it the physical block number of the block which was most-recentl
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* allocated to this file. This give us the goal (target) for the next
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* allocation when we detect linearly ascending requests.
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*/
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ext3_fsblk_t last_alloc_physical_block;
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};
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#define rsv_start rsv_window._rsv_start
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#define rsv_end rsv_window._rsv_end
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/*
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* third extended file system inode data in memory
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*/
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struct ext3_inode_info {
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__le32 i_data[15]; /* unconverted */
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__u32 i_flags;
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#ifdef EXT3_FRAGMENTS
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__u32 i_faddr;
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__u8 i_frag_no;
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__u8 i_frag_size;
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#endif
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ext3_fsblk_t i_file_acl;
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__u32 i_dir_acl;
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__u32 i_dtime;
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/*
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* i_block_group is the number of the block group which contains
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* this file's inode. Constant across the lifetime of the inode,
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* it is ued for making block allocation decisions - we try to
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* place a file's data blocks near its inode block, and new inodes
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* near to their parent directory's inode.
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*/
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__u32 i_block_group;
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unsigned long i_state_flags; /* Dynamic state flags for ext3 */
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/* block reservation info */
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struct ext3_block_alloc_info *i_block_alloc_info;
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__u32 i_dir_start_lookup;
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#ifdef CONFIG_EXT3_FS_XATTR
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/*
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* Extended attributes can be read independently of the main file
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* data. Taking i_mutex even when reading would cause contention
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* between readers of EAs and writers of regular file data, so
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* instead we synchronize on xattr_sem when reading or changing
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* EAs.
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*/
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struct rw_semaphore xattr_sem;
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#endif
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struct list_head i_orphan; /* unlinked but open inodes */
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/*
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* i_disksize keeps track of what the inode size is ON DISK, not
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* in memory. During truncate, i_size is set to the new size by
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* the VFS prior to calling ext3_truncate(), but the filesystem won't
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* set i_disksize to 0 until the truncate is actually under way.
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*
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* The intent is that i_disksize always represents the blocks which
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* are used by this file. This allows recovery to restart truncate
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* on orphans if we crash during truncate. We actually write i_disksize
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* into the on-disk inode when writing inodes out, instead of i_size.
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*
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* The only time when i_disksize and i_size may be different is when
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* a truncate is in progress. The only things which change i_disksize
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* are ext3_get_block (growth) and ext3_truncate (shrinkth).
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*/
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loff_t i_disksize;
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/* on-disk additional length */
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__u16 i_extra_isize;
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/*
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* truncate_mutex is for serialising ext3_truncate() against
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* ext3_getblock(). In the 2.4 ext2 design, great chunks of inode's
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* data tree are chopped off during truncate. We can't do that in
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* ext3 because whenever we perform intermediate commits during
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* truncate, the inode and all the metadata blocks *must* be in a
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* consistent state which allows truncation of the orphans to restart
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* during recovery. Hence we must fix the get_block-vs-truncate race
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* by other means, so we have truncate_mutex.
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*/
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struct mutex truncate_mutex;
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/*
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* Transactions that contain inode's metadata needed to complete
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* fsync and fdatasync, respectively.
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*/
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atomic_t i_sync_tid;
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atomic_t i_datasync_tid;
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struct inode vfs_inode;
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};
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/*
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* third extended-fs super-block data in memory
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*/
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struct ext3_sb_info {
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unsigned long s_frag_size; /* Size of a fragment in bytes */
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unsigned long s_frags_per_block;/* Number of fragments per block */
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unsigned long s_inodes_per_block;/* Number of inodes per block */
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unsigned long s_frags_per_group;/* Number of fragments in a group */
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unsigned long s_blocks_per_group;/* Number of blocks in a group */
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unsigned long s_inodes_per_group;/* Number of inodes in a group */
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unsigned long s_itb_per_group; /* Number of inode table blocks per group */
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unsigned long s_gdb_count; /* Number of group descriptor blocks */
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unsigned long s_desc_per_block; /* Number of group descriptors per block */
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unsigned long s_groups_count; /* Number of groups in the fs */
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unsigned long s_overhead_last; /* Last calculated overhead */
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unsigned long s_blocks_last; /* Last seen block count */
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struct buffer_head * s_sbh; /* Buffer containing the super block */
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struct ext3_super_block * s_es; /* Pointer to the super block in the buffer */
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struct buffer_head ** s_group_desc;
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unsigned long s_mount_opt;
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ext3_fsblk_t s_sb_block;
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uid_t s_resuid;
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gid_t s_resgid;
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unsigned short s_mount_state;
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unsigned short s_pad;
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int s_addr_per_block_bits;
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int s_desc_per_block_bits;
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int s_inode_size;
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int s_first_ino;
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spinlock_t s_next_gen_lock;
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u32 s_next_generation;
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u32 s_hash_seed[4];
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int s_def_hash_version;
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int s_hash_unsigned; /* 3 if hash should be signed, 0 if not */
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struct percpu_counter s_freeblocks_counter;
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struct percpu_counter s_freeinodes_counter;
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struct percpu_counter s_dirs_counter;
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struct blockgroup_lock *s_blockgroup_lock;
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/* root of the per fs reservation window tree */
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spinlock_t s_rsv_window_lock;
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struct rb_root s_rsv_window_root;
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struct ext3_reserve_window_node s_rsv_window_head;
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/* Journaling */
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struct inode * s_journal_inode;
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struct journal_s * s_journal;
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struct list_head s_orphan;
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struct mutex s_orphan_lock;
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struct mutex s_resize_lock;
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unsigned long s_commit_interval;
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struct block_device *journal_bdev;
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#ifdef CONFIG_QUOTA
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char *s_qf_names[MAXQUOTAS]; /* Names of quota files with journalled quota */
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int s_jquota_fmt; /* Format of quota to use */
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#endif
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};
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static inline spinlock_t *
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sb_bgl_lock(struct ext3_sb_info *sbi, unsigned int block_group)
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{
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return bgl_lock_ptr(sbi->s_blockgroup_lock, block_group);
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}
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static inline struct ext3_sb_info * EXT3_SB(struct super_block *sb)
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{
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return sb->s_fs_info;
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@ -576,12 +722,6 @@ static inline void ext3_clear_inode_state(struct inode *inode, int bit)
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{
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clear_bit(bit, &EXT3_I(inode)->i_state_flags);
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}
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#else
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/* Assume that user mode programs are passing in an ext3fs superblock, not
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* a kernel struct super_block. This will allow us to call the feature-test
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* macros from user land. */
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#define EXT3_SB(sb) (sb)
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#endif
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#define NEXT_ORPHAN(inode) EXT3_I(inode)->i_dtime
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@ -771,8 +911,6 @@ static inline __le16 ext3_rec_len_to_disk(unsigned len)
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#define DX_HASH_HALF_MD4_UNSIGNED 4
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#define DX_HASH_TEA_UNSIGNED 5
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#ifdef __KERNEL__
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|
||||
/* hash info structure used by the directory hash */
|
||||
struct dx_hash_info
|
||||
{
|
||||
|
|
@ -974,7 +1112,211 @@ extern const struct inode_operations ext3_special_inode_operations;
|
|||
extern const struct inode_operations ext3_symlink_inode_operations;
|
||||
extern const struct inode_operations ext3_fast_symlink_inode_operations;
|
||||
|
||||
#define EXT3_JOURNAL(inode) (EXT3_SB((inode)->i_sb)->s_journal)
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
/* Define the number of blocks we need to account to a transaction to
|
||||
* modify one block of data.
|
||||
*
|
||||
* We may have to touch one inode, one bitmap buffer, up to three
|
||||
* indirection blocks, the group and superblock summaries, and the data
|
||||
* block to complete the transaction. */
|
||||
|
||||
#endif /* _LINUX_EXT3_FS_H */
|
||||
#define EXT3_SINGLEDATA_TRANS_BLOCKS 8U
|
||||
|
||||
/* Extended attribute operations touch at most two data buffers,
|
||||
* two bitmap buffers, and two group summaries, in addition to the inode
|
||||
* and the superblock, which are already accounted for. */
|
||||
|
||||
#define EXT3_XATTR_TRANS_BLOCKS 6U
|
||||
|
||||
/* Define the minimum size for a transaction which modifies data. This
|
||||
* needs to take into account the fact that we may end up modifying two
|
||||
* quota files too (one for the group, one for the user quota). The
|
||||
* superblock only gets updated once, of course, so don't bother
|
||||
* counting that again for the quota updates. */
|
||||
|
||||
#define EXT3_DATA_TRANS_BLOCKS(sb) (EXT3_SINGLEDATA_TRANS_BLOCKS + \
|
||||
EXT3_XATTR_TRANS_BLOCKS - 2 + \
|
||||
EXT3_MAXQUOTAS_TRANS_BLOCKS(sb))
|
||||
|
||||
/* Delete operations potentially hit one directory's namespace plus an
|
||||
* entire inode, plus arbitrary amounts of bitmap/indirection data. Be
|
||||
* generous. We can grow the delete transaction later if necessary. */
|
||||
|
||||
#define EXT3_DELETE_TRANS_BLOCKS(sb) (EXT3_MAXQUOTAS_TRANS_BLOCKS(sb) + 64)
|
||||
|
||||
/* Define an arbitrary limit for the amount of data we will anticipate
|
||||
* writing to any given transaction. For unbounded transactions such as
|
||||
* write(2) and truncate(2) we can write more than this, but we always
|
||||
* start off at the maximum transaction size and grow the transaction
|
||||
* optimistically as we go. */
|
||||
|
||||
#define EXT3_MAX_TRANS_DATA 64U
|
||||
|
||||
/* We break up a large truncate or write transaction once the handle's
|
||||
* buffer credits gets this low, we need either to extend the
|
||||
* transaction or to start a new one. Reserve enough space here for
|
||||
* inode, bitmap, superblock, group and indirection updates for at least
|
||||
* one block, plus two quota updates. Quota allocations are not
|
||||
* needed. */
|
||||
|
||||
#define EXT3_RESERVE_TRANS_BLOCKS 12U
|
||||
|
||||
#define EXT3_INDEX_EXTRA_TRANS_BLOCKS 8
|
||||
|
||||
#ifdef CONFIG_QUOTA
|
||||
/* Amount of blocks needed for quota update - we know that the structure was
|
||||
* allocated so we need to update only inode+data */
|
||||
#define EXT3_QUOTA_TRANS_BLOCKS(sb) (test_opt(sb, QUOTA) ? 2 : 0)
|
||||
/* Amount of blocks needed for quota insert/delete - we do some block writes
|
||||
* but inode, sb and group updates are done only once */
|
||||
#define EXT3_QUOTA_INIT_BLOCKS(sb) (test_opt(sb, QUOTA) ? (DQUOT_INIT_ALLOC*\
|
||||
(EXT3_SINGLEDATA_TRANS_BLOCKS-3)+3+DQUOT_INIT_REWRITE) : 0)
|
||||
#define EXT3_QUOTA_DEL_BLOCKS(sb) (test_opt(sb, QUOTA) ? (DQUOT_DEL_ALLOC*\
|
||||
(EXT3_SINGLEDATA_TRANS_BLOCKS-3)+3+DQUOT_DEL_REWRITE) : 0)
|
||||
#else
|
||||
#define EXT3_QUOTA_TRANS_BLOCKS(sb) 0
|
||||
#define EXT3_QUOTA_INIT_BLOCKS(sb) 0
|
||||
#define EXT3_QUOTA_DEL_BLOCKS(sb) 0
|
||||
#endif
|
||||
#define EXT3_MAXQUOTAS_TRANS_BLOCKS(sb) (MAXQUOTAS*EXT3_QUOTA_TRANS_BLOCKS(sb))
|
||||
#define EXT3_MAXQUOTAS_INIT_BLOCKS(sb) (MAXQUOTAS*EXT3_QUOTA_INIT_BLOCKS(sb))
|
||||
#define EXT3_MAXQUOTAS_DEL_BLOCKS(sb) (MAXQUOTAS*EXT3_QUOTA_DEL_BLOCKS(sb))
|
||||
|
||||
int
|
||||
ext3_mark_iloc_dirty(handle_t *handle,
|
||||
struct inode *inode,
|
||||
struct ext3_iloc *iloc);
|
||||
|
||||
/*
|
||||
* On success, We end up with an outstanding reference count against
|
||||
* iloc->bh. This _must_ be cleaned up later.
|
||||
*/
|
||||
|
||||
int ext3_reserve_inode_write(handle_t *handle, struct inode *inode,
|
||||
struct ext3_iloc *iloc);
|
||||
|
||||
int ext3_mark_inode_dirty(handle_t *handle, struct inode *inode);
|
||||
|
||||
/*
|
||||
* Wrapper functions with which ext3 calls into JBD. The intent here is
|
||||
* to allow these to be turned into appropriate stubs so ext3 can control
|
||||
* ext2 filesystems, so ext2+ext3 systems only nee one fs. This work hasn't
|
||||
* been done yet.
|
||||
*/
|
||||
|
||||
static inline void ext3_journal_release_buffer(handle_t *handle,
|
||||
struct buffer_head *bh)
|
||||
{
|
||||
journal_release_buffer(handle, bh);
|
||||
}
|
||||
|
||||
void ext3_journal_abort_handle(const char *caller, const char *err_fn,
|
||||
struct buffer_head *bh, handle_t *handle, int err);
|
||||
|
||||
int __ext3_journal_get_undo_access(const char *where, handle_t *handle,
|
||||
struct buffer_head *bh);
|
||||
|
||||
int __ext3_journal_get_write_access(const char *where, handle_t *handle,
|
||||
struct buffer_head *bh);
|
||||
|
||||
int __ext3_journal_forget(const char *where, handle_t *handle,
|
||||
struct buffer_head *bh);
|
||||
|
||||
int __ext3_journal_revoke(const char *where, handle_t *handle,
|
||||
unsigned long blocknr, struct buffer_head *bh);
|
||||
|
||||
int __ext3_journal_get_create_access(const char *where,
|
||||
handle_t *handle, struct buffer_head *bh);
|
||||
|
||||
int __ext3_journal_dirty_metadata(const char *where,
|
||||
handle_t *handle, struct buffer_head *bh);
|
||||
|
||||
#define ext3_journal_get_undo_access(handle, bh) \
|
||||
__ext3_journal_get_undo_access(__func__, (handle), (bh))
|
||||
#define ext3_journal_get_write_access(handle, bh) \
|
||||
__ext3_journal_get_write_access(__func__, (handle), (bh))
|
||||
#define ext3_journal_revoke(handle, blocknr, bh) \
|
||||
__ext3_journal_revoke(__func__, (handle), (blocknr), (bh))
|
||||
#define ext3_journal_get_create_access(handle, bh) \
|
||||
__ext3_journal_get_create_access(__func__, (handle), (bh))
|
||||
#define ext3_journal_dirty_metadata(handle, bh) \
|
||||
__ext3_journal_dirty_metadata(__func__, (handle), (bh))
|
||||
#define ext3_journal_forget(handle, bh) \
|
||||
__ext3_journal_forget(__func__, (handle), (bh))
|
||||
|
||||
int ext3_journal_dirty_data(handle_t *handle, struct buffer_head *bh);
|
||||
|
||||
handle_t *ext3_journal_start_sb(struct super_block *sb, int nblocks);
|
||||
int __ext3_journal_stop(const char *where, handle_t *handle);
|
||||
|
||||
static inline handle_t *ext3_journal_start(struct inode *inode, int nblocks)
|
||||
{
|
||||
return ext3_journal_start_sb(inode->i_sb, nblocks);
|
||||
}
|
||||
|
||||
#define ext3_journal_stop(handle) \
|
||||
__ext3_journal_stop(__func__, (handle))
|
||||
|
||||
static inline handle_t *ext3_journal_current_handle(void)
|
||||
{
|
||||
return journal_current_handle();
|
||||
}
|
||||
|
||||
static inline int ext3_journal_extend(handle_t *handle, int nblocks)
|
||||
{
|
||||
return journal_extend(handle, nblocks);
|
||||
}
|
||||
|
||||
static inline int ext3_journal_restart(handle_t *handle, int nblocks)
|
||||
{
|
||||
return journal_restart(handle, nblocks);
|
||||
}
|
||||
|
||||
static inline int ext3_journal_blocks_per_page(struct inode *inode)
|
||||
{
|
||||
return journal_blocks_per_page(inode);
|
||||
}
|
||||
|
||||
static inline int ext3_journal_force_commit(journal_t *journal)
|
||||
{
|
||||
return journal_force_commit(journal);
|
||||
}
|
||||
|
||||
/* super.c */
|
||||
int ext3_force_commit(struct super_block *sb);
|
||||
|
||||
static inline int ext3_should_journal_data(struct inode *inode)
|
||||
{
|
||||
if (!S_ISREG(inode->i_mode))
|
||||
return 1;
|
||||
if (test_opt(inode->i_sb, DATA_FLAGS) == EXT3_MOUNT_JOURNAL_DATA)
|
||||
return 1;
|
||||
if (EXT3_I(inode)->i_flags & EXT3_JOURNAL_DATA_FL)
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline int ext3_should_order_data(struct inode *inode)
|
||||
{
|
||||
if (!S_ISREG(inode->i_mode))
|
||||
return 0;
|
||||
if (EXT3_I(inode)->i_flags & EXT3_JOURNAL_DATA_FL)
|
||||
return 0;
|
||||
if (test_opt(inode->i_sb, DATA_FLAGS) == EXT3_MOUNT_ORDERED_DATA)
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline int ext3_should_writeback_data(struct inode *inode)
|
||||
{
|
||||
if (!S_ISREG(inode->i_mode))
|
||||
return 0;
|
||||
if (EXT3_I(inode)->i_flags & EXT3_JOURNAL_DATA_FL)
|
||||
return 0;
|
||||
if (test_opt(inode->i_sb, DATA_FLAGS) == EXT3_MOUNT_WRITEBACK_DATA)
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
#include <trace/events/ext3.h>
|
||||
|
|
@ -2,7 +2,7 @@
|
|||
* Interface between ext3 and JBD
|
||||
*/
|
||||
|
||||
#include <linux/ext3_jbd.h>
|
||||
#include "ext3.h"
|
||||
|
||||
int __ext3_journal_get_undo_access(const char *where, handle_t *handle,
|
||||
struct buffer_head *bh)
|
||||
|
|
|
|||
|
|
@ -18,12 +18,8 @@
|
|||
* (jj@sunsite.ms.mff.cuni.cz)
|
||||
*/
|
||||
|
||||
#include <linux/time.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/jbd.h>
|
||||
#include <linux/quotaops.h>
|
||||
#include <linux/ext3_fs.h>
|
||||
#include <linux/ext3_jbd.h>
|
||||
#include "ext3.h"
|
||||
#include "xattr.h"
|
||||
#include "acl.h"
|
||||
|
||||
|
|
|
|||
|
|
@ -22,15 +22,9 @@
|
|||
* we can depend on generic_block_fdatasync() to sync the data blocks.
|
||||
*/
|
||||
|
||||
#include <linux/time.h>
|
||||
#include <linux/blkdev.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/sched.h>
|
||||
#include <linux/writeback.h>
|
||||
#include <linux/jbd.h>
|
||||
#include <linux/ext3_fs.h>
|
||||
#include <linux/ext3_jbd.h>
|
||||
#include <trace/events/ext3.h>
|
||||
#include "ext3.h"
|
||||
|
||||
/*
|
||||
* akpm: A new design for ext3_sync_file().
|
||||
|
|
|
|||
|
|
@ -9,9 +9,7 @@
|
|||
* License.
|
||||
*/
|
||||
|
||||
#include <linux/fs.h>
|
||||
#include <linux/jbd.h>
|
||||
#include <linux/ext3_fs.h>
|
||||
#include "ext3.h"
|
||||
#include <linux/cryptohash.h>
|
||||
|
||||
#define DELTA 0x9E3779B9
|
||||
|
|
|
|||
|
|
@ -12,21 +12,10 @@
|
|||
* David S. Miller (davem@caip.rutgers.edu), 1995
|
||||
*/
|
||||
|
||||
#include <linux/time.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/jbd.h>
|
||||
#include <linux/ext3_fs.h>
|
||||
#include <linux/ext3_jbd.h>
|
||||
#include <linux/stat.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/quotaops.h>
|
||||
#include <linux/buffer_head.h>
|
||||
#include <linux/random.h>
|
||||
#include <linux/bitops.h>
|
||||
#include <trace/events/ext3.h>
|
||||
|
||||
#include <asm/byteorder.h>
|
||||
|
||||
#include "ext3.h"
|
||||
#include "xattr.h"
|
||||
#include "acl.h"
|
||||
|
||||
|
|
|
|||
|
|
@ -22,22 +22,12 @@
|
|||
* Assorted race fixes, rewrite of ext3_get_block() by Al Viro, 2000
|
||||
*/
|
||||
|
||||
#include <linux/fs.h>
|
||||
#include <linux/time.h>
|
||||
#include <linux/ext3_jbd.h>
|
||||
#include <linux/jbd.h>
|
||||
#include <linux/highuid.h>
|
||||
#include <linux/pagemap.h>
|
||||
#include <linux/quotaops.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/buffer_head.h>
|
||||
#include <linux/writeback.h>
|
||||
#include <linux/mpage.h>
|
||||
#include <linux/uio.h>
|
||||
#include <linux/bio.h>
|
||||
#include <linux/fiemap.h>
|
||||
#include <linux/namei.h>
|
||||
#include <trace/events/ext3.h>
|
||||
#include "ext3.h"
|
||||
#include "xattr.h"
|
||||
#include "acl.h"
|
||||
|
||||
|
|
|
|||
|
|
@ -7,15 +7,10 @@
|
|||
* Universite Pierre et Marie Curie (Paris VI)
|
||||
*/
|
||||
|
||||
#include <linux/fs.h>
|
||||
#include <linux/jbd.h>
|
||||
#include <linux/capability.h>
|
||||
#include <linux/ext3_fs.h>
|
||||
#include <linux/ext3_jbd.h>
|
||||
#include <linux/mount.h>
|
||||
#include <linux/time.h>
|
||||
#include <linux/compat.h>
|
||||
#include <asm/uaccess.h>
|
||||
#include "ext3.h"
|
||||
|
||||
long ext3_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -24,20 +24,8 @@
|
|||
* Theodore Ts'o, 2002
|
||||
*/
|
||||
|
||||
#include <linux/fs.h>
|
||||
#include <linux/pagemap.h>
|
||||
#include <linux/jbd.h>
|
||||
#include <linux/time.h>
|
||||
#include <linux/ext3_fs.h>
|
||||
#include <linux/ext3_jbd.h>
|
||||
#include <linux/fcntl.h>
|
||||
#include <linux/stat.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/quotaops.h>
|
||||
#include <linux/buffer_head.h>
|
||||
#include <linux/bio.h>
|
||||
#include <trace/events/ext3.h>
|
||||
|
||||
#include "ext3.h"
|
||||
#include "namei.h"
|
||||
#include "xattr.h"
|
||||
#include "acl.h"
|
||||
|
|
|
|||
|
|
@ -11,10 +11,7 @@
|
|||
|
||||
#define EXT3FS_DEBUG
|
||||
|
||||
#include <linux/ext3_jbd.h>
|
||||
|
||||
#include <linux/errno.h>
|
||||
#include <linux/slab.h>
|
||||
#include "ext3.h"
|
||||
|
||||
|
||||
#define outside(b, first, last) ((b) < (first) || (b) >= (last))
|
||||
|
|
|
|||
|
|
@ -17,22 +17,12 @@
|
|||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/time.h>
|
||||
#include <linux/jbd.h>
|
||||
#include <linux/ext3_fs.h>
|
||||
#include <linux/ext3_jbd.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/blkdev.h>
|
||||
#include <linux/parser.h>
|
||||
#include <linux/buffer_head.h>
|
||||
#include <linux/exportfs.h>
|
||||
#include <linux/vfs.h>
|
||||
#include <linux/statfs.h>
|
||||
#include <linux/random.h>
|
||||
#include <linux/mount.h>
|
||||
#include <linux/namei.h>
|
||||
#include <linux/quotaops.h>
|
||||
#include <linux/seq_file.h>
|
||||
#include <linux/log2.h>
|
||||
|
|
@ -40,13 +30,13 @@
|
|||
|
||||
#include <asm/uaccess.h>
|
||||
|
||||
#define CREATE_TRACE_POINTS
|
||||
|
||||
#include "ext3.h"
|
||||
#include "xattr.h"
|
||||
#include "acl.h"
|
||||
#include "namei.h"
|
||||
|
||||
#define CREATE_TRACE_POINTS
|
||||
#include <trace/events/ext3.h>
|
||||
|
||||
#ifdef CONFIG_EXT3_DEFAULTS_TO_ORDERED
|
||||
#define EXT3_MOUNT_DEFAULT_DATA_MODE EXT3_MOUNT_ORDERED_DATA
|
||||
#else
|
||||
|
|
|
|||
|
|
@ -17,10 +17,8 @@
|
|||
* ext3 symlink handling code
|
||||
*/
|
||||
|
||||
#include <linux/fs.h>
|
||||
#include <linux/jbd.h>
|
||||
#include <linux/ext3_fs.h>
|
||||
#include <linux/namei.h>
|
||||
#include "ext3.h"
|
||||
#include "xattr.h"
|
||||
|
||||
static void * ext3_follow_link(struct dentry *dentry, struct nameidata *nd)
|
||||
|
|
|
|||
|
|
@ -50,14 +50,9 @@
|
|||
* by the buffer lock.
|
||||
*/
|
||||
|
||||
#include <linux/init.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/ext3_jbd.h>
|
||||
#include <linux/ext3_fs.h>
|
||||
#include "ext3.h"
|
||||
#include <linux/mbcache.h>
|
||||
#include <linux/quotaops.h>
|
||||
#include <linux/rwsem.h>
|
||||
#include "xattr.h"
|
||||
#include "acl.h"
|
||||
|
||||
|
|
|
|||
|
|
@ -3,12 +3,8 @@
|
|||
* Handler for storing security labels as extended attributes.
|
||||
*/
|
||||
|
||||
#include <linux/slab.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/ext3_jbd.h>
|
||||
#include <linux/ext3_fs.h>
|
||||
#include <linux/security.h>
|
||||
#include "ext3.h"
|
||||
#include "xattr.h"
|
||||
|
||||
static size_t
|
||||
|
|
|
|||
|
|
@ -5,11 +5,7 @@
|
|||
* Copyright (C) 2003 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
|
||||
*/
|
||||
|
||||
#include <linux/string.h>
|
||||
#include <linux/capability.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/ext3_jbd.h>
|
||||
#include <linux/ext3_fs.h>
|
||||
#include "ext3.h"
|
||||
#include "xattr.h"
|
||||
|
||||
static size_t
|
||||
|
|
|
|||
|
|
@ -5,10 +5,7 @@
|
|||
* Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
|
||||
*/
|
||||
|
||||
#include <linux/string.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/ext3_jbd.h>
|
||||
#include <linux/ext3_fs.h>
|
||||
#include "ext3.h"
|
||||
#include "xattr.h"
|
||||
|
||||
static size_t
|
||||
|
|
|
|||
|
|
@ -1,151 +0,0 @@
|
|||
/*
|
||||
* linux/include/linux/ext3_fs_i.h
|
||||
*
|
||||
* Copyright (C) 1992, 1993, 1994, 1995
|
||||
* Remy Card (card@masi.ibp.fr)
|
||||
* Laboratoire MASI - Institut Blaise Pascal
|
||||
* Universite Pierre et Marie Curie (Paris VI)
|
||||
*
|
||||
* from
|
||||
*
|
||||
* linux/include/linux/minix_fs_i.h
|
||||
*
|
||||
* Copyright (C) 1991, 1992 Linus Torvalds
|
||||
*/
|
||||
|
||||
#ifndef _LINUX_EXT3_FS_I
|
||||
#define _LINUX_EXT3_FS_I
|
||||
|
||||
#include <linux/rwsem.h>
|
||||
#include <linux/rbtree.h>
|
||||
#include <linux/seqlock.h>
|
||||
#include <linux/mutex.h>
|
||||
|
||||
/* data type for block offset of block group */
|
||||
typedef int ext3_grpblk_t;
|
||||
|
||||
/* data type for filesystem-wide blocks number */
|
||||
typedef unsigned long ext3_fsblk_t;
|
||||
|
||||
#define E3FSBLK "%lu"
|
||||
|
||||
struct ext3_reserve_window {
|
||||
ext3_fsblk_t _rsv_start; /* First byte reserved */
|
||||
ext3_fsblk_t _rsv_end; /* Last byte reserved or 0 */
|
||||
};
|
||||
|
||||
struct ext3_reserve_window_node {
|
||||
struct rb_node rsv_node;
|
||||
__u32 rsv_goal_size;
|
||||
__u32 rsv_alloc_hit;
|
||||
struct ext3_reserve_window rsv_window;
|
||||
};
|
||||
|
||||
struct ext3_block_alloc_info {
|
||||
/* information about reservation window */
|
||||
struct ext3_reserve_window_node rsv_window_node;
|
||||
/*
|
||||
* was i_next_alloc_block in ext3_inode_info
|
||||
* is the logical (file-relative) number of the
|
||||
* most-recently-allocated block in this file.
|
||||
* We use this for detecting linearly ascending allocation requests.
|
||||
*/
|
||||
__u32 last_alloc_logical_block;
|
||||
/*
|
||||
* Was i_next_alloc_goal in ext3_inode_info
|
||||
* is the *physical* companion to i_next_alloc_block.
|
||||
* it the physical block number of the block which was most-recentl
|
||||
* allocated to this file. This give us the goal (target) for the next
|
||||
* allocation when we detect linearly ascending requests.
|
||||
*/
|
||||
ext3_fsblk_t last_alloc_physical_block;
|
||||
};
|
||||
|
||||
#define rsv_start rsv_window._rsv_start
|
||||
#define rsv_end rsv_window._rsv_end
|
||||
|
||||
/*
|
||||
* third extended file system inode data in memory
|
||||
*/
|
||||
struct ext3_inode_info {
|
||||
__le32 i_data[15]; /* unconverted */
|
||||
__u32 i_flags;
|
||||
#ifdef EXT3_FRAGMENTS
|
||||
__u32 i_faddr;
|
||||
__u8 i_frag_no;
|
||||
__u8 i_frag_size;
|
||||
#endif
|
||||
ext3_fsblk_t i_file_acl;
|
||||
__u32 i_dir_acl;
|
||||
__u32 i_dtime;
|
||||
|
||||
/*
|
||||
* i_block_group is the number of the block group which contains
|
||||
* this file's inode. Constant across the lifetime of the inode,
|
||||
* it is ued for making block allocation decisions - we try to
|
||||
* place a file's data blocks near its inode block, and new inodes
|
||||
* near to their parent directory's inode.
|
||||
*/
|
||||
__u32 i_block_group;
|
||||
unsigned long i_state_flags; /* Dynamic state flags for ext3 */
|
||||
|
||||
/* block reservation info */
|
||||
struct ext3_block_alloc_info *i_block_alloc_info;
|
||||
|
||||
__u32 i_dir_start_lookup;
|
||||
#ifdef CONFIG_EXT3_FS_XATTR
|
||||
/*
|
||||
* Extended attributes can be read independently of the main file
|
||||
* data. Taking i_mutex even when reading would cause contention
|
||||
* between readers of EAs and writers of regular file data, so
|
||||
* instead we synchronize on xattr_sem when reading or changing
|
||||
* EAs.
|
||||
*/
|
||||
struct rw_semaphore xattr_sem;
|
||||
#endif
|
||||
|
||||
struct list_head i_orphan; /* unlinked but open inodes */
|
||||
|
||||
/*
|
||||
* i_disksize keeps track of what the inode size is ON DISK, not
|
||||
* in memory. During truncate, i_size is set to the new size by
|
||||
* the VFS prior to calling ext3_truncate(), but the filesystem won't
|
||||
* set i_disksize to 0 until the truncate is actually under way.
|
||||
*
|
||||
* The intent is that i_disksize always represents the blocks which
|
||||
* are used by this file. This allows recovery to restart truncate
|
||||
* on orphans if we crash during truncate. We actually write i_disksize
|
||||
* into the on-disk inode when writing inodes out, instead of i_size.
|
||||
*
|
||||
* The only time when i_disksize and i_size may be different is when
|
||||
* a truncate is in progress. The only things which change i_disksize
|
||||
* are ext3_get_block (growth) and ext3_truncate (shrinkth).
|
||||
*/
|
||||
loff_t i_disksize;
|
||||
|
||||
/* on-disk additional length */
|
||||
__u16 i_extra_isize;
|
||||
|
||||
/*
|
||||
* truncate_mutex is for serialising ext3_truncate() against
|
||||
* ext3_getblock(). In the 2.4 ext2 design, great chunks of inode's
|
||||
* data tree are chopped off during truncate. We can't do that in
|
||||
* ext3 because whenever we perform intermediate commits during
|
||||
* truncate, the inode and all the metadata blocks *must* be in a
|
||||
* consistent state which allows truncation of the orphans to restart
|
||||
* during recovery. Hence we must fix the get_block-vs-truncate race
|
||||
* by other means, so we have truncate_mutex.
|
||||
*/
|
||||
struct mutex truncate_mutex;
|
||||
|
||||
/*
|
||||
* Transactions that contain inode's metadata needed to complete
|
||||
* fsync and fdatasync, respectively.
|
||||
*/
|
||||
atomic_t i_sync_tid;
|
||||
atomic_t i_datasync_tid;
|
||||
|
||||
struct inode vfs_inode;
|
||||
};
|
||||
|
||||
#endif /* _LINUX_EXT3_FS_I */
|
||||
|
|
@ -1,91 +0,0 @@
|
|||
/*
|
||||
* linux/include/linux/ext3_fs_sb.h
|
||||
*
|
||||
* Copyright (C) 1992, 1993, 1994, 1995
|
||||
* Remy Card (card@masi.ibp.fr)
|
||||
* Laboratoire MASI - Institut Blaise Pascal
|
||||
* Universite Pierre et Marie Curie (Paris VI)
|
||||
*
|
||||
* from
|
||||
*
|
||||
* linux/include/linux/minix_fs_sb.h
|
||||
*
|
||||
* Copyright (C) 1991, 1992 Linus Torvalds
|
||||
*/
|
||||
|
||||
#ifndef _LINUX_EXT3_FS_SB
|
||||
#define _LINUX_EXT3_FS_SB
|
||||
|
||||
#ifdef __KERNEL__
|
||||
#include <linux/timer.h>
|
||||
#include <linux/wait.h>
|
||||
#include <linux/blockgroup_lock.h>
|
||||
#include <linux/percpu_counter.h>
|
||||
#endif
|
||||
#include <linux/rbtree.h>
|
||||
|
||||
/*
|
||||
* third extended-fs super-block data in memory
|
||||
*/
|
||||
struct ext3_sb_info {
|
||||
unsigned long s_frag_size; /* Size of a fragment in bytes */
|
||||
unsigned long s_frags_per_block;/* Number of fragments per block */
|
||||
unsigned long s_inodes_per_block;/* Number of inodes per block */
|
||||
unsigned long s_frags_per_group;/* Number of fragments in a group */
|
||||
unsigned long s_blocks_per_group;/* Number of blocks in a group */
|
||||
unsigned long s_inodes_per_group;/* Number of inodes in a group */
|
||||
unsigned long s_itb_per_group; /* Number of inode table blocks per group */
|
||||
unsigned long s_gdb_count; /* Number of group descriptor blocks */
|
||||
unsigned long s_desc_per_block; /* Number of group descriptors per block */
|
||||
unsigned long s_groups_count; /* Number of groups in the fs */
|
||||
unsigned long s_overhead_last; /* Last calculated overhead */
|
||||
unsigned long s_blocks_last; /* Last seen block count */
|
||||
struct buffer_head * s_sbh; /* Buffer containing the super block */
|
||||
struct ext3_super_block * s_es; /* Pointer to the super block in the buffer */
|
||||
struct buffer_head ** s_group_desc;
|
||||
unsigned long s_mount_opt;
|
||||
ext3_fsblk_t s_sb_block;
|
||||
uid_t s_resuid;
|
||||
gid_t s_resgid;
|
||||
unsigned short s_mount_state;
|
||||
unsigned short s_pad;
|
||||
int s_addr_per_block_bits;
|
||||
int s_desc_per_block_bits;
|
||||
int s_inode_size;
|
||||
int s_first_ino;
|
||||
spinlock_t s_next_gen_lock;
|
||||
u32 s_next_generation;
|
||||
u32 s_hash_seed[4];
|
||||
int s_def_hash_version;
|
||||
int s_hash_unsigned; /* 3 if hash should be signed, 0 if not */
|
||||
struct percpu_counter s_freeblocks_counter;
|
||||
struct percpu_counter s_freeinodes_counter;
|
||||
struct percpu_counter s_dirs_counter;
|
||||
struct blockgroup_lock *s_blockgroup_lock;
|
||||
|
||||
/* root of the per fs reservation window tree */
|
||||
spinlock_t s_rsv_window_lock;
|
||||
struct rb_root s_rsv_window_root;
|
||||
struct ext3_reserve_window_node s_rsv_window_head;
|
||||
|
||||
/* Journaling */
|
||||
struct inode * s_journal_inode;
|
||||
struct journal_s * s_journal;
|
||||
struct list_head s_orphan;
|
||||
struct mutex s_orphan_lock;
|
||||
struct mutex s_resize_lock;
|
||||
unsigned long s_commit_interval;
|
||||
struct block_device *journal_bdev;
|
||||
#ifdef CONFIG_QUOTA
|
||||
char *s_qf_names[MAXQUOTAS]; /* Names of quota files with journalled quota */
|
||||
int s_jquota_fmt; /* Format of quota to use */
|
||||
#endif
|
||||
};
|
||||
|
||||
static inline spinlock_t *
|
||||
sb_bgl_lock(struct ext3_sb_info *sbi, unsigned int block_group)
|
||||
{
|
||||
return bgl_lock_ptr(sbi->s_blockgroup_lock, block_group);
|
||||
}
|
||||
|
||||
#endif /* _LINUX_EXT3_FS_SB */
|
||||
|
|
@ -1,229 +0,0 @@
|
|||
/*
|
||||
* linux/include/linux/ext3_jbd.h
|
||||
*
|
||||
* Written by Stephen C. Tweedie <sct@redhat.com>, 1999
|
||||
*
|
||||
* Copyright 1998--1999 Red Hat corp --- All Rights Reserved
|
||||
*
|
||||
* This file is part of the Linux kernel and is made available under
|
||||
* the terms of the GNU General Public License, version 2, or at your
|
||||
* option, any later version, incorporated herein by reference.
|
||||
*
|
||||
* Ext3-specific journaling extensions.
|
||||
*/
|
||||
|
||||
#ifndef _LINUX_EXT3_JBD_H
|
||||
#define _LINUX_EXT3_JBD_H
|
||||
|
||||
#include <linux/fs.h>
|
||||
#include <linux/jbd.h>
|
||||
#include <linux/ext3_fs.h>
|
||||
|
||||
#define EXT3_JOURNAL(inode) (EXT3_SB((inode)->i_sb)->s_journal)
|
||||
|
||||
/* Define the number of blocks we need to account to a transaction to
|
||||
* modify one block of data.
|
||||
*
|
||||
* We may have to touch one inode, one bitmap buffer, up to three
|
||||
* indirection blocks, the group and superblock summaries, and the data
|
||||
* block to complete the transaction. */
|
||||
|
||||
#define EXT3_SINGLEDATA_TRANS_BLOCKS 8U
|
||||
|
||||
/* Extended attribute operations touch at most two data buffers,
|
||||
* two bitmap buffers, and two group summaries, in addition to the inode
|
||||
* and the superblock, which are already accounted for. */
|
||||
|
||||
#define EXT3_XATTR_TRANS_BLOCKS 6U
|
||||
|
||||
/* Define the minimum size for a transaction which modifies data. This
|
||||
* needs to take into account the fact that we may end up modifying two
|
||||
* quota files too (one for the group, one for the user quota). The
|
||||
* superblock only gets updated once, of course, so don't bother
|
||||
* counting that again for the quota updates. */
|
||||
|
||||
#define EXT3_DATA_TRANS_BLOCKS(sb) (EXT3_SINGLEDATA_TRANS_BLOCKS + \
|
||||
EXT3_XATTR_TRANS_BLOCKS - 2 + \
|
||||
EXT3_MAXQUOTAS_TRANS_BLOCKS(sb))
|
||||
|
||||
/* Delete operations potentially hit one directory's namespace plus an
|
||||
* entire inode, plus arbitrary amounts of bitmap/indirection data. Be
|
||||
* generous. We can grow the delete transaction later if necessary. */
|
||||
|
||||
#define EXT3_DELETE_TRANS_BLOCKS(sb) (EXT3_MAXQUOTAS_TRANS_BLOCKS(sb) + 64)
|
||||
|
||||
/* Define an arbitrary limit for the amount of data we will anticipate
|
||||
* writing to any given transaction. For unbounded transactions such as
|
||||
* write(2) and truncate(2) we can write more than this, but we always
|
||||
* start off at the maximum transaction size and grow the transaction
|
||||
* optimistically as we go. */
|
||||
|
||||
#define EXT3_MAX_TRANS_DATA 64U
|
||||
|
||||
/* We break up a large truncate or write transaction once the handle's
|
||||
* buffer credits gets this low, we need either to extend the
|
||||
* transaction or to start a new one. Reserve enough space here for
|
||||
* inode, bitmap, superblock, group and indirection updates for at least
|
||||
* one block, plus two quota updates. Quota allocations are not
|
||||
* needed. */
|
||||
|
||||
#define EXT3_RESERVE_TRANS_BLOCKS 12U
|
||||
|
||||
#define EXT3_INDEX_EXTRA_TRANS_BLOCKS 8
|
||||
|
||||
#ifdef CONFIG_QUOTA
|
||||
/* Amount of blocks needed for quota update - we know that the structure was
|
||||
* allocated so we need to update only inode+data */
|
||||
#define EXT3_QUOTA_TRANS_BLOCKS(sb) (test_opt(sb, QUOTA) ? 2 : 0)
|
||||
/* Amount of blocks needed for quota insert/delete - we do some block writes
|
||||
* but inode, sb and group updates are done only once */
|
||||
#define EXT3_QUOTA_INIT_BLOCKS(sb) (test_opt(sb, QUOTA) ? (DQUOT_INIT_ALLOC*\
|
||||
(EXT3_SINGLEDATA_TRANS_BLOCKS-3)+3+DQUOT_INIT_REWRITE) : 0)
|
||||
#define EXT3_QUOTA_DEL_BLOCKS(sb) (test_opt(sb, QUOTA) ? (DQUOT_DEL_ALLOC*\
|
||||
(EXT3_SINGLEDATA_TRANS_BLOCKS-3)+3+DQUOT_DEL_REWRITE) : 0)
|
||||
#else
|
||||
#define EXT3_QUOTA_TRANS_BLOCKS(sb) 0
|
||||
#define EXT3_QUOTA_INIT_BLOCKS(sb) 0
|
||||
#define EXT3_QUOTA_DEL_BLOCKS(sb) 0
|
||||
#endif
|
||||
#define EXT3_MAXQUOTAS_TRANS_BLOCKS(sb) (MAXQUOTAS*EXT3_QUOTA_TRANS_BLOCKS(sb))
|
||||
#define EXT3_MAXQUOTAS_INIT_BLOCKS(sb) (MAXQUOTAS*EXT3_QUOTA_INIT_BLOCKS(sb))
|
||||
#define EXT3_MAXQUOTAS_DEL_BLOCKS(sb) (MAXQUOTAS*EXT3_QUOTA_DEL_BLOCKS(sb))
|
||||
|
||||
int
|
||||
ext3_mark_iloc_dirty(handle_t *handle,
|
||||
struct inode *inode,
|
||||
struct ext3_iloc *iloc);
|
||||
|
||||
/*
|
||||
* On success, We end up with an outstanding reference count against
|
||||
* iloc->bh. This _must_ be cleaned up later.
|
||||
*/
|
||||
|
||||
int ext3_reserve_inode_write(handle_t *handle, struct inode *inode,
|
||||
struct ext3_iloc *iloc);
|
||||
|
||||
int ext3_mark_inode_dirty(handle_t *handle, struct inode *inode);
|
||||
|
||||
/*
|
||||
* Wrapper functions with which ext3 calls into JBD. The intent here is
|
||||
* to allow these to be turned into appropriate stubs so ext3 can control
|
||||
* ext2 filesystems, so ext2+ext3 systems only nee one fs. This work hasn't
|
||||
* been done yet.
|
||||
*/
|
||||
|
||||
static inline void ext3_journal_release_buffer(handle_t *handle,
|
||||
struct buffer_head *bh)
|
||||
{
|
||||
journal_release_buffer(handle, bh);
|
||||
}
|
||||
|
||||
void ext3_journal_abort_handle(const char *caller, const char *err_fn,
|
||||
struct buffer_head *bh, handle_t *handle, int err);
|
||||
|
||||
int __ext3_journal_get_undo_access(const char *where, handle_t *handle,
|
||||
struct buffer_head *bh);
|
||||
|
||||
int __ext3_journal_get_write_access(const char *where, handle_t *handle,
|
||||
struct buffer_head *bh);
|
||||
|
||||
int __ext3_journal_forget(const char *where, handle_t *handle,
|
||||
struct buffer_head *bh);
|
||||
|
||||
int __ext3_journal_revoke(const char *where, handle_t *handle,
|
||||
unsigned long blocknr, struct buffer_head *bh);
|
||||
|
||||
int __ext3_journal_get_create_access(const char *where,
|
||||
handle_t *handle, struct buffer_head *bh);
|
||||
|
||||
int __ext3_journal_dirty_metadata(const char *where,
|
||||
handle_t *handle, struct buffer_head *bh);
|
||||
|
||||
#define ext3_journal_get_undo_access(handle, bh) \
|
||||
__ext3_journal_get_undo_access(__func__, (handle), (bh))
|
||||
#define ext3_journal_get_write_access(handle, bh) \
|
||||
__ext3_journal_get_write_access(__func__, (handle), (bh))
|
||||
#define ext3_journal_revoke(handle, blocknr, bh) \
|
||||
__ext3_journal_revoke(__func__, (handle), (blocknr), (bh))
|
||||
#define ext3_journal_get_create_access(handle, bh) \
|
||||
__ext3_journal_get_create_access(__func__, (handle), (bh))
|
||||
#define ext3_journal_dirty_metadata(handle, bh) \
|
||||
__ext3_journal_dirty_metadata(__func__, (handle), (bh))
|
||||
#define ext3_journal_forget(handle, bh) \
|
||||
__ext3_journal_forget(__func__, (handle), (bh))
|
||||
|
||||
int ext3_journal_dirty_data(handle_t *handle, struct buffer_head *bh);
|
||||
|
||||
handle_t *ext3_journal_start_sb(struct super_block *sb, int nblocks);
|
||||
int __ext3_journal_stop(const char *where, handle_t *handle);
|
||||
|
||||
static inline handle_t *ext3_journal_start(struct inode *inode, int nblocks)
|
||||
{
|
||||
return ext3_journal_start_sb(inode->i_sb, nblocks);
|
||||
}
|
||||
|
||||
#define ext3_journal_stop(handle) \
|
||||
__ext3_journal_stop(__func__, (handle))
|
||||
|
||||
static inline handle_t *ext3_journal_current_handle(void)
|
||||
{
|
||||
return journal_current_handle();
|
||||
}
|
||||
|
||||
static inline int ext3_journal_extend(handle_t *handle, int nblocks)
|
||||
{
|
||||
return journal_extend(handle, nblocks);
|
||||
}
|
||||
|
||||
static inline int ext3_journal_restart(handle_t *handle, int nblocks)
|
||||
{
|
||||
return journal_restart(handle, nblocks);
|
||||
}
|
||||
|
||||
static inline int ext3_journal_blocks_per_page(struct inode *inode)
|
||||
{
|
||||
return journal_blocks_per_page(inode);
|
||||
}
|
||||
|
||||
static inline int ext3_journal_force_commit(journal_t *journal)
|
||||
{
|
||||
return journal_force_commit(journal);
|
||||
}
|
||||
|
||||
/* super.c */
|
||||
int ext3_force_commit(struct super_block *sb);
|
||||
|
||||
static inline int ext3_should_journal_data(struct inode *inode)
|
||||
{
|
||||
if (!S_ISREG(inode->i_mode))
|
||||
return 1;
|
||||
if (test_opt(inode->i_sb, DATA_FLAGS) == EXT3_MOUNT_JOURNAL_DATA)
|
||||
return 1;
|
||||
if (EXT3_I(inode)->i_flags & EXT3_JOURNAL_DATA_FL)
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline int ext3_should_order_data(struct inode *inode)
|
||||
{
|
||||
if (!S_ISREG(inode->i_mode))
|
||||
return 0;
|
||||
if (EXT3_I(inode)->i_flags & EXT3_JOURNAL_DATA_FL)
|
||||
return 0;
|
||||
if (test_opt(inode->i_sb, DATA_FLAGS) == EXT3_MOUNT_ORDERED_DATA)
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline int ext3_should_writeback_data(struct inode *inode)
|
||||
{
|
||||
if (!S_ISREG(inode->i_mode))
|
||||
return 0;
|
||||
if (EXT3_I(inode)->i_flags & EXT3_JOURNAL_DATA_FL)
|
||||
return 0;
|
||||
if (test_opt(inode->i_sb, DATA_FLAGS) == EXT3_MOUNT_WRITEBACK_DATA)
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
#endif /* _LINUX_EXT3_JBD_H */
|
||||
Reference in New Issue