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-rw-r--r--fs/ext3/ext3.h1332
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diff --git a/fs/ext3/ext3.h b/fs/ext3/ext3.h
deleted file mode 100644
index f483a80b3fe7..000000000000
--- a/fs/ext3/ext3.h
+++ /dev/null
@@ -1,1332 +0,0 @@
-/*
- * 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.
- *
- * 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.h
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- */
-
-#include <linux/fs.h>
-#include <linux/jbd.h>
-#include <linux/magic.h>
-#include <linux/bug.h>
-#include <linux/blockgroup_lock.h>
-
-/*
- * The second extended filesystem constants/structures
- */
-
-/*
- * Define EXT3FS_DEBUG to produce debug messages
- */
-#undef EXT3FS_DEBUG
-
-/*
- * Define EXT3_RESERVATION to reserve data blocks for expanding files
- */
-#define EXT3_DEFAULT_RESERVE_BLOCKS 8
-/*max window size: 1024(direct blocks) + 3([t,d]indirect blocks) */
-#define EXT3_MAX_RESERVE_BLOCKS 1027
-#define EXT3_RESERVE_WINDOW_NOT_ALLOCATED 0
-
-/*
- * Debug code
- */
-#ifdef EXT3FS_DEBUG
-#define ext3_debug(f, a...) \
- do { \
- printk (KERN_DEBUG "EXT3-fs DEBUG (%s, %d): %s:", \
- __FILE__, __LINE__, __func__); \
- printk (KERN_DEBUG f, ## a); \
- } while (0)
-#else
-#define ext3_debug(f, a...) do {} while (0)
-#endif
-
-/*
- * Special inodes numbers
- */
-#define EXT3_BAD_INO 1 /* Bad blocks inode */
-#define EXT3_ROOT_INO 2 /* Root inode */
-#define EXT3_BOOT_LOADER_INO 5 /* Boot loader inode */
-#define EXT3_UNDEL_DIR_INO 6 /* Undelete directory inode */
-#define EXT3_RESIZE_INO 7 /* Reserved group descriptors inode */
-#define EXT3_JOURNAL_INO 8 /* Journal inode */
-
-/* First non-reserved inode for old ext3 filesystems */
-#define EXT3_GOOD_OLD_FIRST_INO 11
-
-/*
- * Maximal count of links to a file
- */
-#define EXT3_LINK_MAX 32000
-
-/*
- * Macro-instructions used to manage several block sizes
- */
-#define EXT3_MIN_BLOCK_SIZE 1024
-#define EXT3_MAX_BLOCK_SIZE 65536
-#define EXT3_MIN_BLOCK_LOG_SIZE 10
-#define EXT3_BLOCK_SIZE(s) ((s)->s_blocksize)
-#define EXT3_ADDR_PER_BLOCK(s) (EXT3_BLOCK_SIZE(s) / sizeof (__u32))
-#define EXT3_BLOCK_SIZE_BITS(s) ((s)->s_blocksize_bits)
-#define EXT3_ADDR_PER_BLOCK_BITS(s) (EXT3_SB(s)->s_addr_per_block_bits)
-#define EXT3_INODE_SIZE(s) (EXT3_SB(s)->s_inode_size)
-#define EXT3_FIRST_INO(s) (EXT3_SB(s)->s_first_ino)
-
-/*
- * Macro-instructions used to manage fragments
- */
-#define EXT3_MIN_FRAG_SIZE 1024
-#define EXT3_MAX_FRAG_SIZE 4096
-#define EXT3_MIN_FRAG_LOG_SIZE 10
-#define EXT3_FRAG_SIZE(s) (EXT3_SB(s)->s_frag_size)
-#define EXT3_FRAGS_PER_BLOCK(s) (EXT3_SB(s)->s_frags_per_block)
-
-/*
- * Structure of a blocks group descriptor
- */
-struct ext3_group_desc
-{
- __le32 bg_block_bitmap; /* Blocks bitmap block */
- __le32 bg_inode_bitmap; /* Inodes bitmap block */
- __le32 bg_inode_table; /* Inodes table block */
- __le16 bg_free_blocks_count; /* Free blocks count */
- __le16 bg_free_inodes_count; /* Free inodes count */
- __le16 bg_used_dirs_count; /* Directories count */
- __u16 bg_pad;
- __le32 bg_reserved[3];
-};
-
-/*
- * Macro-instructions used to manage group descriptors
- */
-#define EXT3_BLOCKS_PER_GROUP(s) (EXT3_SB(s)->s_blocks_per_group)
-#define EXT3_DESC_PER_BLOCK(s) (EXT3_SB(s)->s_desc_per_block)
-#define EXT3_INODES_PER_GROUP(s) (EXT3_SB(s)->s_inodes_per_group)
-#define EXT3_DESC_PER_BLOCK_BITS(s) (EXT3_SB(s)->s_desc_per_block_bits)
-
-/*
- * Constants relative to the data blocks
- */
-#define EXT3_NDIR_BLOCKS 12
-#define EXT3_IND_BLOCK EXT3_NDIR_BLOCKS
-#define EXT3_DIND_BLOCK (EXT3_IND_BLOCK + 1)
-#define EXT3_TIND_BLOCK (EXT3_DIND_BLOCK + 1)
-#define EXT3_N_BLOCKS (EXT3_TIND_BLOCK + 1)
-
-/*
- * Inode flags
- */
-#define EXT3_SECRM_FL 0x00000001 /* Secure deletion */
-#define EXT3_UNRM_FL 0x00000002 /* Undelete */
-#define EXT3_COMPR_FL 0x00000004 /* Compress file */
-#define EXT3_SYNC_FL 0x00000008 /* Synchronous updates */
-#define EXT3_IMMUTABLE_FL 0x00000010 /* Immutable file */
-#define EXT3_APPEND_FL 0x00000020 /* writes to file may only append */
-#define EXT3_NODUMP_FL 0x00000040 /* do not dump file */
-#define EXT3_NOATIME_FL 0x00000080 /* do not update atime */
-/* Reserved for compression usage... */
-#define EXT3_DIRTY_FL 0x00000100
-#define EXT3_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */
-#define EXT3_NOCOMPR_FL 0x00000400 /* Don't compress */
-#define EXT3_ECOMPR_FL 0x00000800 /* Compression error */
-/* End compression flags --- maybe not all used */
-#define EXT3_INDEX_FL 0x00001000 /* hash-indexed directory */
-#define EXT3_IMAGIC_FL 0x00002000 /* AFS directory */
-#define EXT3_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */
-#define EXT3_NOTAIL_FL 0x00008000 /* file tail should not be merged */
-#define EXT3_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */
-#define EXT3_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
-#define EXT3_RESERVED_FL 0x80000000 /* reserved for ext3 lib */
-
-#define EXT3_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */
-#define EXT3_FL_USER_MODIFIABLE 0x000380FF /* User modifiable flags */
-
-/* Flags that should be inherited by new inodes from their parent. */
-#define EXT3_FL_INHERITED (EXT3_SECRM_FL | EXT3_UNRM_FL | EXT3_COMPR_FL |\
- EXT3_SYNC_FL | EXT3_NODUMP_FL |\
- EXT3_NOATIME_FL | EXT3_COMPRBLK_FL |\
- EXT3_NOCOMPR_FL | EXT3_JOURNAL_DATA_FL |\
- EXT3_NOTAIL_FL | EXT3_DIRSYNC_FL)
-
-/* Flags that are appropriate for regular files (all but dir-specific ones). */
-#define EXT3_REG_FLMASK (~(EXT3_DIRSYNC_FL | EXT3_TOPDIR_FL))
-
-/* Flags that are appropriate for non-directories/regular files. */
-#define EXT3_OTHER_FLMASK (EXT3_NODUMP_FL | EXT3_NOATIME_FL)
-
-/* Mask out flags that are inappropriate for the given type of inode. */
-static inline __u32 ext3_mask_flags(umode_t mode, __u32 flags)
-{
- if (S_ISDIR(mode))
- return flags;
- else if (S_ISREG(mode))
- return flags & EXT3_REG_FLMASK;
- else
- return flags & EXT3_OTHER_FLMASK;
-}
-
-/* Used to pass group descriptor data when online resize is done */
-struct ext3_new_group_input {
- __u32 group; /* Group number for this data */
- __u32 block_bitmap; /* Absolute block number of block bitmap */
- __u32 inode_bitmap; /* Absolute block number of inode bitmap */
- __u32 inode_table; /* Absolute block number of inode table start */
- __u32 blocks_count; /* Total number of blocks in this group */
- __u16 reserved_blocks; /* Number of reserved blocks in this group */
- __u16 unused;
-};
-
-/* The struct ext3_new_group_input in kernel space, with free_blocks_count */
-struct ext3_new_group_data {
- __u32 group;
- __u32 block_bitmap;
- __u32 inode_bitmap;
- __u32 inode_table;
- __u32 blocks_count;
- __u16 reserved_blocks;
- __u16 unused;
- __u32 free_blocks_count;
-};
-
-
-/*
- * ioctl commands
- */
-#define EXT3_IOC_GETFLAGS FS_IOC_GETFLAGS
-#define EXT3_IOC_SETFLAGS FS_IOC_SETFLAGS
-#define EXT3_IOC_GETVERSION _IOR('f', 3, long)
-#define EXT3_IOC_SETVERSION _IOW('f', 4, long)
-#define EXT3_IOC_GROUP_EXTEND _IOW('f', 7, unsigned long)
-#define EXT3_IOC_GROUP_ADD _IOW('f', 8,struct ext3_new_group_input)
-#define EXT3_IOC_GETVERSION_OLD FS_IOC_GETVERSION
-#define EXT3_IOC_SETVERSION_OLD FS_IOC_SETVERSION
-#ifdef CONFIG_JBD_DEBUG
-#define EXT3_IOC_WAIT_FOR_READONLY _IOR('f', 99, long)
-#endif
-#define EXT3_IOC_GETRSVSZ _IOR('f', 5, long)
-#define EXT3_IOC_SETRSVSZ _IOW('f', 6, long)
-
-/*
- * ioctl commands in 32 bit emulation
- */
-#define EXT3_IOC32_GETFLAGS FS_IOC32_GETFLAGS
-#define EXT3_IOC32_SETFLAGS FS_IOC32_SETFLAGS
-#define EXT3_IOC32_GETVERSION _IOR('f', 3, int)
-#define EXT3_IOC32_SETVERSION _IOW('f', 4, int)
-#define EXT3_IOC32_GETRSVSZ _IOR('f', 5, int)
-#define EXT3_IOC32_SETRSVSZ _IOW('f', 6, int)
-#define EXT3_IOC32_GROUP_EXTEND _IOW('f', 7, unsigned int)
-#ifdef CONFIG_JBD_DEBUG
-#define EXT3_IOC32_WAIT_FOR_READONLY _IOR('f', 99, int)
-#endif
-#define EXT3_IOC32_GETVERSION_OLD FS_IOC32_GETVERSION
-#define EXT3_IOC32_SETVERSION_OLD FS_IOC32_SETVERSION
-
-/* Number of supported quota types */
-#define EXT3_MAXQUOTAS 2
-
-/*
- * Mount options
- */
-struct ext3_mount_options {
- unsigned long s_mount_opt;
- kuid_t s_resuid;
- kgid_t s_resgid;
- unsigned long s_commit_interval;
-#ifdef CONFIG_QUOTA
- int s_jquota_fmt;
- char *s_qf_names[EXT3_MAXQUOTAS];
-#endif
-};
-
-/*
- * Structure of an inode on the disk
- */
-struct ext3_inode {
- __le16 i_mode; /* File mode */
- __le16 i_uid; /* Low 16 bits of Owner Uid */
- __le32 i_size; /* Size in bytes */
- __le32 i_atime; /* Access time */
- __le32 i_ctime; /* Creation time */
- __le32 i_mtime; /* Modification time */
- __le32 i_dtime; /* Deletion Time */
- __le16 i_gid; /* Low 16 bits of Group Id */
- __le16 i_links_count; /* Links count */
- __le32 i_blocks; /* Blocks count */
- __le32 i_flags; /* File flags */
- union {
- struct {
- __u32 l_i_reserved1;
- } linux1;
- struct {
- __u32 h_i_translator;
- } hurd1;
- struct {
- __u32 m_i_reserved1;
- } masix1;
- } osd1; /* OS dependent 1 */
- __le32 i_block[EXT3_N_BLOCKS];/* Pointers to blocks */
- __le32 i_generation; /* File version (for NFS) */
- __le32 i_file_acl; /* File ACL */
- __le32 i_dir_acl; /* Directory ACL */
- __le32 i_faddr; /* Fragment address */
- union {
- struct {
- __u8 l_i_frag; /* Fragment number */
- __u8 l_i_fsize; /* Fragment size */
- __u16 i_pad1;
- __le16 l_i_uid_high; /* these 2 fields */
- __le16 l_i_gid_high; /* were reserved2[0] */
- __u32 l_i_reserved2;
- } linux2;
- struct {
- __u8 h_i_frag; /* Fragment number */
- __u8 h_i_fsize; /* Fragment size */
- __u16 h_i_mode_high;
- __u16 h_i_uid_high;
- __u16 h_i_gid_high;
- __u32 h_i_author;
- } hurd2;
- struct {
- __u8 m_i_frag; /* Fragment number */
- __u8 m_i_fsize; /* Fragment size */
- __u16 m_pad1;
- __u32 m_i_reserved2[2];
- } masix2;
- } osd2; /* OS dependent 2 */
- __le16 i_extra_isize;
- __le16 i_pad1;
-};
-
-#define i_size_high i_dir_acl
-
-#define i_reserved1 osd1.linux1.l_i_reserved1
-#define i_frag osd2.linux2.l_i_frag
-#define i_fsize osd2.linux2.l_i_fsize
-#define i_uid_low i_uid
-#define i_gid_low i_gid
-#define i_uid_high osd2.linux2.l_i_uid_high
-#define i_gid_high osd2.linux2.l_i_gid_high
-#define i_reserved2 osd2.linux2.l_i_reserved2
-
-/*
- * File system states
- */
-#define EXT3_VALID_FS 0x0001 /* Unmounted cleanly */
-#define EXT3_ERROR_FS 0x0002 /* Errors detected */
-#define EXT3_ORPHAN_FS 0x0004 /* Orphans being recovered */
-
-/*
- * Misc. filesystem flags
- */
-#define EXT2_FLAGS_SIGNED_HASH 0x0001 /* Signed dirhash in use */
-#define EXT2_FLAGS_UNSIGNED_HASH 0x0002 /* Unsigned dirhash in use */
-#define EXT2_FLAGS_TEST_FILESYS 0x0004 /* to test development code */
-
-/*
- * Mount flags
- */
-#define EXT3_MOUNT_CHECK 0x00001 /* Do mount-time checks */
-/* EXT3_MOUNT_OLDALLOC was there */
-#define EXT3_MOUNT_GRPID 0x00004 /* Create files with directory's group */
-#define EXT3_MOUNT_DEBUG 0x00008 /* Some debugging messages */
-#define EXT3_MOUNT_ERRORS_CONT 0x00010 /* Continue on errors */
-#define EXT3_MOUNT_ERRORS_RO 0x00020 /* Remount fs ro on errors */
-#define EXT3_MOUNT_ERRORS_PANIC 0x00040 /* Panic on errors */
-#define EXT3_MOUNT_MINIX_DF 0x00080 /* Mimics the Minix statfs */
-#define EXT3_MOUNT_NOLOAD 0x00100 /* Don't use existing journal*/
-#define EXT3_MOUNT_ABORT 0x00200 /* Fatal error detected */
-#define EXT3_MOUNT_DATA_FLAGS 0x00C00 /* Mode for data writes: */
-#define EXT3_MOUNT_JOURNAL_DATA 0x00400 /* Write data to journal */
-#define EXT3_MOUNT_ORDERED_DATA 0x00800 /* Flush data before commit */
-#define EXT3_MOUNT_WRITEBACK_DATA 0x00C00 /* No data ordering */
-#define EXT3_MOUNT_UPDATE_JOURNAL 0x01000 /* Update the journal format */
-#define EXT3_MOUNT_NO_UID32 0x02000 /* Disable 32-bit UIDs */
-#define EXT3_MOUNT_XATTR_USER 0x04000 /* Extended user attributes */
-#define EXT3_MOUNT_POSIX_ACL 0x08000 /* POSIX Access Control Lists */
-#define EXT3_MOUNT_RESERVATION 0x10000 /* Preallocation */
-#define EXT3_MOUNT_BARRIER 0x20000 /* Use block barriers */
-#define EXT3_MOUNT_QUOTA 0x80000 /* Some quota option set */
-#define EXT3_MOUNT_USRQUOTA 0x100000 /* "old" user quota */
-#define EXT3_MOUNT_GRPQUOTA 0x200000 /* "old" group quota */
-#define EXT3_MOUNT_DATA_ERR_ABORT 0x400000 /* Abort on file data write
- * error in ordered mode */
-
-/* Compatibility, for having both ext2_fs.h and ext3_fs.h included at once */
-#ifndef _LINUX_EXT2_FS_H
-#define clear_opt(o, opt) o &= ~EXT3_MOUNT_##opt
-#define set_opt(o, opt) o |= EXT3_MOUNT_##opt
-#define test_opt(sb, opt) (EXT3_SB(sb)->s_mount_opt & \
- EXT3_MOUNT_##opt)
-#else
-#define EXT2_MOUNT_NOLOAD EXT3_MOUNT_NOLOAD
-#define EXT2_MOUNT_ABORT EXT3_MOUNT_ABORT
-#define EXT2_MOUNT_DATA_FLAGS EXT3_MOUNT_DATA_FLAGS
-#endif
-
-#define ext3_set_bit __set_bit_le
-#define ext3_set_bit_atomic ext2_set_bit_atomic
-#define ext3_clear_bit __clear_bit_le
-#define ext3_clear_bit_atomic ext2_clear_bit_atomic
-#define ext3_test_bit test_bit_le
-#define ext3_find_next_zero_bit find_next_zero_bit_le
-
-/*
- * Maximal mount counts between two filesystem checks
- */
-#define EXT3_DFL_MAX_MNT_COUNT 20 /* Allow 20 mounts */
-#define EXT3_DFL_CHECKINTERVAL 0 /* Don't use interval check */
-
-/*
- * Behaviour when detecting errors
- */
-#define EXT3_ERRORS_CONTINUE 1 /* Continue execution */
-#define EXT3_ERRORS_RO 2 /* Remount fs read-only */
-#define EXT3_ERRORS_PANIC 3 /* Panic */
-#define EXT3_ERRORS_DEFAULT EXT3_ERRORS_CONTINUE
-
-/*
- * Structure of the super block
- */
-struct ext3_super_block {
-/*00*/ __le32 s_inodes_count; /* Inodes count */
- __le32 s_blocks_count; /* Blocks count */
- __le32 s_r_blocks_count; /* Reserved blocks count */
- __le32 s_free_blocks_count; /* Free blocks count */
-/*10*/ __le32 s_free_inodes_count; /* Free inodes count */
- __le32 s_first_data_block; /* First Data Block */
- __le32 s_log_block_size; /* Block size */
- __le32 s_log_frag_size; /* Fragment size */
-/*20*/ __le32 s_blocks_per_group; /* # Blocks per group */
- __le32 s_frags_per_group; /* # Fragments per group */
- __le32 s_inodes_per_group; /* # Inodes per group */
- __le32 s_mtime; /* Mount time */
-/*30*/ __le32 s_wtime; /* Write time */
- __le16 s_mnt_count; /* Mount count */
- __le16 s_max_mnt_count; /* Maximal mount count */
- __le16 s_magic; /* Magic signature */
- __le16 s_state; /* File system state */
- __le16 s_errors; /* Behaviour when detecting errors */
- __le16 s_minor_rev_level; /* minor revision level */
-/*40*/ __le32 s_lastcheck; /* time of last check */
- __le32 s_checkinterval; /* max. time between checks */
- __le32 s_creator_os; /* OS */
- __le32 s_rev_level; /* Revision level */
-/*50*/ __le16 s_def_resuid; /* Default uid for reserved blocks */
- __le16 s_def_resgid; /* Default gid for reserved blocks */
- /*
- * These fields are for EXT3_DYNAMIC_REV superblocks only.
- *
- * Note: the difference between the compatible feature set and
- * the incompatible feature set is that if there is a bit set
- * in the incompatible feature set that the kernel doesn't
- * know about, it should refuse to mount the filesystem.
- *
- * e2fsck's requirements are more strict; if it doesn't know
- * about a feature in either the compatible or incompatible
- * feature set, it must abort and not try to meddle with
- * things it doesn't understand...
- */
- __le32 s_first_ino; /* First non-reserved inode */
- __le16 s_inode_size; /* size of inode structure */
- __le16 s_block_group_nr; /* block group # of this superblock */
- __le32 s_feature_compat; /* compatible feature set */
-/*60*/ __le32 s_feature_incompat; /* incompatible feature set */
- __le32 s_feature_ro_compat; /* readonly-compatible feature set */
-/*68*/ __u8 s_uuid[16]; /* 128-bit uuid for volume */
-/*78*/ char s_volume_name[16]; /* volume name */
-/*88*/ char s_last_mounted[64]; /* directory where last mounted */
-/*C8*/ __le32 s_algorithm_usage_bitmap; /* For compression */
- /*
- * Performance hints. Directory preallocation should only
- * happen if the EXT3_FEATURE_COMPAT_DIR_PREALLOC flag is on.
- */
- __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/
- __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */
- __le16 s_reserved_gdt_blocks; /* Per group desc for online growth */
- /*
- * Journaling support valid if EXT3_FEATURE_COMPAT_HAS_JOURNAL set.
- */
-/*D0*/ __u8 s_journal_uuid[16]; /* uuid of journal superblock */
-/*E0*/ __le32 s_journal_inum; /* inode number of journal file */
- __le32 s_journal_dev; /* device number of journal file */
- __le32 s_last_orphan; /* start of list of inodes to delete */
- __le32 s_hash_seed[4]; /* HTREE hash seed */
- __u8 s_def_hash_version; /* Default hash version to use */
- __u8 s_reserved_char_pad;
- __u16 s_reserved_word_pad;
- __le32 s_default_mount_opts;
- __le32 s_first_meta_bg; /* First metablock block group */
- __le32 s_mkfs_time; /* When the filesystem was created */
- __le32 s_jnl_blocks[17]; /* Backup of the journal inode */
- /* 64bit support valid if EXT4_FEATURE_COMPAT_64BIT */
-/*150*/ __le32 s_blocks_count_hi; /* Blocks count */
- __le32 s_r_blocks_count_hi; /* Reserved blocks count */
- __le32 s_free_blocks_count_hi; /* Free blocks count */
- __le16 s_min_extra_isize; /* All inodes have at least # bytes */
- __le16 s_want_extra_isize; /* New inodes should reserve # bytes */
- __le32 s_flags; /* Miscellaneous flags */
- __le16 s_raid_stride; /* RAID stride */
- __le16 s_mmp_interval; /* # seconds to wait in MMP checking */
- __le64 s_mmp_block; /* Block for multi-mount protection */
- __le32 s_raid_stripe_width; /* blocks on all data disks (N*stride)*/
- __u8 s_log_groups_per_flex; /* FLEX_BG group size */
- __u8 s_reserved_char_pad2;
- __le16 s_reserved_pad;
- __u32 s_reserved[162]; /* Padding to the end of the block */
-};
-
-/* 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;
-
-#ifdef CONFIG_QUOTA
- struct dquot *i_dquot[MAXQUOTAS];
-#endif
-
- struct inode vfs_inode;
-};
-
-/*
- * 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;
- kuid_t s_resuid;
- kgid_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[EXT3_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);
-}
-
-static inline struct ext3_sb_info * EXT3_SB(struct super_block *sb)
-{
- return sb->s_fs_info;
-}
-static inline struct ext3_inode_info *EXT3_I(struct inode *inode)
-{
- return container_of(inode, struct ext3_inode_info, vfs_inode);
-}
-
-static inline int ext3_valid_inum(struct super_block *sb, unsigned long ino)
-{
- return ino == EXT3_ROOT_INO ||
- ino == EXT3_JOURNAL_INO ||
- ino == EXT3_RESIZE_INO ||
- (ino >= EXT3_FIRST_INO(sb) &&
- ino <= le32_to_cpu(EXT3_SB(sb)->s_es->s_inodes_count));
-}
-
-/*
- * Inode dynamic state flags
- */
-enum {
- EXT3_STATE_JDATA, /* journaled data exists */
- EXT3_STATE_NEW, /* inode is newly created */
- EXT3_STATE_XATTR, /* has in-inode xattrs */
- EXT3_STATE_FLUSH_ON_CLOSE, /* flush dirty pages on close */
-};
-
-static inline int ext3_test_inode_state(struct inode *inode, int bit)
-{
- return test_bit(bit, &EXT3_I(inode)->i_state_flags);
-}
-
-static inline void ext3_set_inode_state(struct inode *inode, int bit)
-{
- set_bit(bit, &EXT3_I(inode)->i_state_flags);
-}
-
-static inline void ext3_clear_inode_state(struct inode *inode, int bit)
-{
- clear_bit(bit, &EXT3_I(inode)->i_state_flags);
-}
-
-#define NEXT_ORPHAN(inode) EXT3_I(inode)->i_dtime
-
-/*
- * Codes for operating systems
- */
-#define EXT3_OS_LINUX 0
-#define EXT3_OS_HURD 1
-#define EXT3_OS_MASIX 2
-#define EXT3_OS_FREEBSD 3
-#define EXT3_OS_LITES 4
-
-/*
- * Revision levels
- */
-#define EXT3_GOOD_OLD_REV 0 /* The good old (original) format */
-#define EXT3_DYNAMIC_REV 1 /* V2 format w/ dynamic inode sizes */
-
-#define EXT3_CURRENT_REV EXT3_GOOD_OLD_REV
-#define EXT3_MAX_SUPP_REV EXT3_DYNAMIC_REV
-
-#define EXT3_GOOD_OLD_INODE_SIZE 128
-
-/*
- * Feature set definitions
- */
-
-#define EXT3_HAS_COMPAT_FEATURE(sb,mask) \
- ( EXT3_SB(sb)->s_es->s_feature_compat & cpu_to_le32(mask) )
-#define EXT3_HAS_RO_COMPAT_FEATURE(sb,mask) \
- ( EXT3_SB(sb)->s_es->s_feature_ro_compat & cpu_to_le32(mask) )
-#define EXT3_HAS_INCOMPAT_FEATURE(sb,mask) \
- ( EXT3_SB(sb)->s_es->s_feature_incompat & cpu_to_le32(mask) )
-#define EXT3_SET_COMPAT_FEATURE(sb,mask) \
- EXT3_SB(sb)->s_es->s_feature_compat |= cpu_to_le32(mask)
-#define EXT3_SET_RO_COMPAT_FEATURE(sb,mask) \
- EXT3_SB(sb)->s_es->s_feature_ro_compat |= cpu_to_le32(mask)
-#define EXT3_SET_INCOMPAT_FEATURE(sb,mask) \
- EXT3_SB(sb)->s_es->s_feature_incompat |= cpu_to_le32(mask)
-#define EXT3_CLEAR_COMPAT_FEATURE(sb,mask) \
- EXT3_SB(sb)->s_es->s_feature_compat &= ~cpu_to_le32(mask)
-#define EXT3_CLEAR_RO_COMPAT_FEATURE(sb,mask) \
- EXT3_SB(sb)->s_es->s_feature_ro_compat &= ~cpu_to_le32(mask)
-#define EXT3_CLEAR_INCOMPAT_FEATURE(sb,mask) \
- EXT3_SB(sb)->s_es->s_feature_incompat &= ~cpu_to_le32(mask)
-
-#define EXT3_FEATURE_COMPAT_DIR_PREALLOC 0x0001
-#define EXT3_FEATURE_COMPAT_IMAGIC_INODES 0x0002
-#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
-#define EXT3_FEATURE_COMPAT_EXT_ATTR 0x0008
-#define EXT3_FEATURE_COMPAT_RESIZE_INODE 0x0010
-#define EXT3_FEATURE_COMPAT_DIR_INDEX 0x0020
-
-#define EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
-#define EXT3_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
-#define EXT3_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
-
-#define EXT3_FEATURE_INCOMPAT_COMPRESSION 0x0001
-#define EXT3_FEATURE_INCOMPAT_FILETYPE 0x0002
-#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 /* Needs recovery */
-#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 /* Journal device */
-#define EXT3_FEATURE_INCOMPAT_META_BG 0x0010
-
-#define EXT3_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR
-#define EXT3_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_FILETYPE| \
- EXT3_FEATURE_INCOMPAT_RECOVER| \
- EXT3_FEATURE_INCOMPAT_META_BG)
-#define EXT3_FEATURE_RO_COMPAT_SUPP (EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER| \
- EXT3_FEATURE_RO_COMPAT_LARGE_FILE| \
- EXT3_FEATURE_RO_COMPAT_BTREE_DIR)
-
-/*
- * Default values for user and/or group using reserved blocks
- */
-#define EXT3_DEF_RESUID 0
-#define EXT3_DEF_RESGID 0
-
-/*
- * Default mount options
- */
-#define EXT3_DEFM_DEBUG 0x0001
-#define EXT3_DEFM_BSDGROUPS 0x0002
-#define EXT3_DEFM_XATTR_USER 0x0004
-#define EXT3_DEFM_ACL 0x0008
-#define EXT3_DEFM_UID16 0x0010
-#define EXT3_DEFM_JMODE 0x0060
-#define EXT3_DEFM_JMODE_DATA 0x0020
-#define EXT3_DEFM_JMODE_ORDERED 0x0040
-#define EXT3_DEFM_JMODE_WBACK 0x0060
-
-/*
- * Structure of a directory entry
- */
-#define EXT3_NAME_LEN 255
-
-struct ext3_dir_entry {
- __le32 inode; /* Inode number */
- __le16 rec_len; /* Directory entry length */
- __le16 name_len; /* Name length */
- char name[EXT3_NAME_LEN]; /* File name */
-};
-
-/*
- * The new version of the directory entry. Since EXT3 structures are
- * stored in intel byte order, and the name_len field could never be
- * bigger than 255 chars, it's safe to reclaim the extra byte for the
- * file_type field.
- */
-struct ext3_dir_entry_2 {
- __le32 inode; /* Inode number */
- __le16 rec_len; /* Directory entry length */
- __u8 name_len; /* Name length */
- __u8 file_type;
- char name[EXT3_NAME_LEN]; /* File name */
-};
-
-/*
- * Ext3 directory file types. Only the low 3 bits are used. The
- * other bits are reserved for now.
- */
-#define EXT3_FT_UNKNOWN 0
-#define EXT3_FT_REG_FILE 1
-#define EXT3_FT_DIR 2
-#define EXT3_FT_CHRDEV 3
-#define EXT3_FT_BLKDEV 4
-#define EXT3_FT_FIFO 5
-#define EXT3_FT_SOCK 6
-#define EXT3_FT_SYMLINK 7
-
-#define EXT3_FT_MAX 8
-
-/*
- * EXT3_DIR_PAD defines the directory entries boundaries
- *
- * NOTE: It must be a multiple of 4
- */
-#define EXT3_DIR_PAD 4
-#define EXT3_DIR_ROUND (EXT3_DIR_PAD - 1)
-#define EXT3_DIR_REC_LEN(name_len) (((name_len) + 8 + EXT3_DIR_ROUND) & \
- ~EXT3_DIR_ROUND)
-#define EXT3_MAX_REC_LEN ((1<<16)-1)
-
-/*
- * Tests against MAX_REC_LEN etc were put in place for 64k block
- * sizes; if that is not possible on this arch, we can skip
- * those tests and speed things up.
- */
-static inline unsigned ext3_rec_len_from_disk(__le16 dlen)
-{
- unsigned len = le16_to_cpu(dlen);
-
-#if (PAGE_CACHE_SIZE >= 65536)
- if (len == EXT3_MAX_REC_LEN)
- return 1 << 16;
-#endif
- return len;
-}
-
-static inline __le16 ext3_rec_len_to_disk(unsigned len)
-{
-#if (PAGE_CACHE_SIZE >= 65536)
- if (len == (1 << 16))
- return cpu_to_le16(EXT3_MAX_REC_LEN);
- else if (len > (1 << 16))
- BUG();
-#endif
- return cpu_to_le16(len);
-}
-
-/*
- * Hash Tree Directory indexing
- * (c) Daniel Phillips, 2001
- */
-
-#define is_dx(dir) (EXT3_HAS_COMPAT_FEATURE(dir->i_sb, \
- EXT3_FEATURE_COMPAT_DIR_INDEX) && \
- (EXT3_I(dir)->i_flags & EXT3_INDEX_FL))
-#define EXT3_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT3_LINK_MAX)
-#define EXT3_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1)
-
-/* Legal values for the dx_root hash_version field: */
-
-#define DX_HASH_LEGACY 0
-#define DX_HASH_HALF_MD4 1
-#define DX_HASH_TEA 2
-#define DX_HASH_LEGACY_UNSIGNED 3
-#define DX_HASH_HALF_MD4_UNSIGNED 4
-#define DX_HASH_TEA_UNSIGNED 5
-
-/* hash info structure used by the directory hash */
-struct dx_hash_info
-{
- u32 hash;
- u32 minor_hash;
- int hash_version;
- u32 *seed;
-};
-
-
-/* 32 and 64 bit signed EOF for dx directories */
-#define EXT3_HTREE_EOF_32BIT ((1UL << (32 - 1)) - 1)
-#define EXT3_HTREE_EOF_64BIT ((1ULL << (64 - 1)) - 1)
-
-
-/*
- * Control parameters used by ext3_htree_next_block
- */
-#define HASH_NB_ALWAYS 1
-
-
-/*
- * Describe an inode's exact location on disk and in memory
- */
-struct ext3_iloc
-{
- struct buffer_head *bh;
- unsigned long offset;
- unsigned long block_group;
-};
-
-static inline struct ext3_inode *ext3_raw_inode(struct ext3_iloc *iloc)
-{
- return (struct ext3_inode *) (iloc->bh->b_data + iloc->offset);
-}
-
-/*
- * This structure is stuffed into the struct file's private_data field
- * for directories. It is where we put information so that we can do
- * readdir operations in hash tree order.
- */
-struct dir_private_info {
- struct rb_root root;
- struct rb_node *curr_node;
- struct fname *extra_fname;
- loff_t last_pos;
- __u32 curr_hash;
- __u32 curr_minor_hash;
- __u32 next_hash;
-};
-
-/* calculate the first block number of the group */
-static inline ext3_fsblk_t
-ext3_group_first_block_no(struct super_block *sb, unsigned long group_no)
-{
- return group_no * (ext3_fsblk_t)EXT3_BLOCKS_PER_GROUP(sb) +
- le32_to_cpu(EXT3_SB(sb)->s_es->s_first_data_block);
-}
-
-/*
- * Special error return code only used by dx_probe() and its callers.
- */
-#define ERR_BAD_DX_DIR -75000
-
-/*
- * Function prototypes
- */
-
-/*
- * Ok, these declarations are also in <linux/kernel.h> but none of the
- * ext3 source programs needs to include it so they are duplicated here.
- */
-# define NORET_TYPE /**/
-# define ATTRIB_NORET __attribute__((noreturn))
-# define NORET_AND noreturn,
-
-/* balloc.c */
-extern int ext3_bg_has_super(struct super_block *sb, int group);
-extern unsigned long ext3_bg_num_gdb(struct super_block *sb, int group);
-extern ext3_fsblk_t ext3_new_block (handle_t *handle, struct inode *inode,
- ext3_fsblk_t goal, int *errp);
-extern ext3_fsblk_t ext3_new_blocks (handle_t *handle, struct inode *inode,
- ext3_fsblk_t goal, unsigned long *count, int *errp);
-extern void ext3_free_blocks (handle_t *handle, struct inode *inode,
- ext3_fsblk_t block, unsigned long count);
-extern void ext3_free_blocks_sb (handle_t *handle, struct super_block *sb,
- ext3_fsblk_t block, unsigned long count,
- unsigned long *pdquot_freed_blocks);
-extern ext3_fsblk_t ext3_count_free_blocks (struct super_block *);
-extern void ext3_check_blocks_bitmap (struct super_block *);
-extern struct ext3_group_desc * ext3_get_group_desc(struct super_block * sb,
- unsigned int block_group,
- struct buffer_head ** bh);
-extern int ext3_should_retry_alloc(struct super_block *sb, int *retries);
-extern void ext3_init_block_alloc_info(struct inode *);
-extern void ext3_rsv_window_add(struct super_block *sb, struct ext3_reserve_window_node *rsv);
-extern int ext3_trim_fs(struct super_block *sb, struct fstrim_range *range);
-
-/* dir.c */
-extern int ext3_check_dir_entry(const char *, struct inode *,
- struct ext3_dir_entry_2 *,
- struct buffer_head *, unsigned long);
-extern int ext3_htree_store_dirent(struct file *dir_file, __u32 hash,
- __u32 minor_hash,
- struct ext3_dir_entry_2 *dirent);
-extern void ext3_htree_free_dir_info(struct dir_private_info *p);
-
-/* fsync.c */
-extern int ext3_sync_file(struct file *, loff_t, loff_t, int);
-
-/* hash.c */
-extern int ext3fs_dirhash(const char *name, int len, struct
- dx_hash_info *hinfo);
-
-/* ialloc.c */
-extern struct inode * ext3_new_inode (handle_t *, struct inode *,
- const struct qstr *, umode_t);
-extern void ext3_free_inode (handle_t *, struct inode *);
-extern struct inode * ext3_orphan_get (struct super_block *, unsigned long);
-extern unsigned long ext3_count_free_inodes (struct super_block *);
-extern unsigned long ext3_count_dirs (struct super_block *);
-extern void ext3_check_inodes_bitmap (struct super_block *);
-extern unsigned long ext3_count_free (struct buffer_head *, unsigned);
-
-
-/* inode.c */
-int ext3_forget(handle_t *handle, int is_metadata, struct inode *inode,
- struct buffer_head *bh, ext3_fsblk_t blocknr);
-struct buffer_head * ext3_getblk (handle_t *, struct inode *, long, int, int *);
-struct buffer_head * ext3_bread (handle_t *, struct inode *, int, int, int *);
-int ext3_get_blocks_handle(handle_t *handle, struct inode *inode,
- sector_t iblock, unsigned long maxblocks, struct buffer_head *bh_result,
- int create);
-
-extern struct inode *ext3_iget(struct super_block *, unsigned long);
-extern int ext3_write_inode (struct inode *, struct writeback_control *);
-extern int ext3_setattr (struct dentry *, struct iattr *);
-extern void ext3_evict_inode (struct inode *);
-extern int ext3_sync_inode (handle_t *, struct inode *);
-extern void ext3_discard_reservation (struct inode *);
-extern void ext3_dirty_inode(struct inode *, int);
-extern int ext3_change_inode_journal_flag(struct inode *, int);
-extern int ext3_get_inode_loc(struct inode *, struct ext3_iloc *);
-extern int ext3_can_truncate(struct inode *inode);
-extern void ext3_truncate(struct inode *inode);
-extern void ext3_set_inode_flags(struct inode *);
-extern void ext3_get_inode_flags(struct ext3_inode_info *);
-extern void ext3_set_aops(struct inode *inode);
-extern int ext3_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
- u64 start, u64 len);
-
-/* ioctl.c */
-extern long ext3_ioctl(struct file *, unsigned int, unsigned long);
-extern long ext3_compat_ioctl(struct file *, unsigned int, unsigned long);
-
-/* namei.c */
-extern int ext3_orphan_add(handle_t *, struct inode *);
-extern int ext3_orphan_del(handle_t *, struct inode *);
-extern int ext3_htree_fill_tree(struct file *dir_file, __u32 start_hash,
- __u32 start_minor_hash, __u32 *next_hash);
-
-/* resize.c */
-extern int ext3_group_add(struct super_block *sb,
- struct ext3_new_group_data *input);
-extern int ext3_group_extend(struct super_block *sb,
- struct ext3_super_block *es,
- ext3_fsblk_t n_blocks_count);
-
-/* super.c */
-extern __printf(3, 4)
-void ext3_error(struct super_block *, const char *, const char *, ...);
-extern void __ext3_std_error (struct super_block *, const char *, int);
-extern __printf(3, 4)
-void ext3_abort(struct super_block *, const char *, const char *, ...);
-extern __printf(3, 4)
-void ext3_warning(struct super_block *, const char *, const char *, ...);
-extern __printf(3, 4)
-void ext3_msg(struct super_block *, const char *, const char *, ...);
-extern void ext3_update_dynamic_rev (struct super_block *sb);
-
-#define ext3_std_error(sb, errno) \
-do { \
- if ((errno)) \
- __ext3_std_error((sb), __func__, (errno)); \
-} while (0)
-
-/*
- * Inodes and files operations
- */
-
-/* dir.c */
-extern const struct file_operations ext3_dir_operations;
-
-/* file.c */
-extern const struct inode_operations ext3_file_inode_operations;
-extern const struct file_operations ext3_file_operations;
-
-/* namei.c */
-extern const struct inode_operations ext3_dir_inode_operations;
-extern const struct inode_operations ext3_special_inode_operations;
-
-/* symlink.c */
-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)
-
-/* 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) (EXT3_MAXQUOTAS*EXT3_QUOTA_TRANS_BLOCKS(sb))
-#define EXT3_MAXQUOTAS_INIT_BLOCKS(sb) (EXT3_MAXQUOTAS*EXT3_QUOTA_INIT_BLOCKS(sb))
-#define EXT3_MAXQUOTAS_DEL_BLOCKS(sb) (EXT3_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>