tools/brcm/K24/hndtools-mipsel-uclibc-4.1.2/include/linux/ext3_fs_sb.h

   1 /*
   2  *  linux/include/linux/ext3_fs_sb.h
   3  *
   4  * Copyright (C) 1992, 1993, 1994, 1995
   5  * Remy Card (card@masi.ibp.fr)
   6  * Laboratoire MASI - Institut Blaise Pascal
   7  * Universite Pierre et Marie Curie (Paris VI)
   8  *
   9  *  from
  10  *
  11  *  linux/include/linux/minix_fs_sb.h
  12  *
  13  *  Copyright (C) 1991, 1992  Linus Torvalds
  14  */
  15
  16 #ifndef _LINUX_EXT3_FS_SB
  17 #define _LINUX_EXT3_FS_SB
  18
  19 #ifdef __KERNEL__
  20 #include <linux/timer.h>
  21 #include <linux/wait.h>
  22 #endif
  23
  24 /*
  25  * The following is not needed anymore since the descriptors buffer
  26  * heads are now dynamically allocated
  27  */
  28 /* #define EXT3_MAX_GROUP_DESC  8 */
  29
  30 #define EXT3_MAX_GROUP_LOADED   8
  31
  32 /*
  33  * third extended-fs super-block data in memory
  34  */
  35 struct ext3_sb_info {
  36         unsigned long s_frag_size;      /* Size of a fragment in bytes */
  37         unsigned long s_frags_per_block;/* Number of fragments per block */
  38         unsigned long s_inodes_per_block;/* Number of inodes per block */
  39         unsigned long s_frags_per_group;/* Number of fragments in a group */
  40         unsigned long s_blocks_per_group;/* Number of blocks in a group */
  41         unsigned long s_inodes_per_group;/* Number of inodes in a group */
  42         unsigned long s_itb_per_group;  /* Number of inode table blocks per group */
  43         unsigned long s_gdb_count;      /* Number of group descriptor blocks */
  44         unsigned long s_desc_per_block; /* Number of group descriptors per block */
  45         unsigned long s_groups_count;   /* Number of groups in the fs */
  46         struct buffer_head * s_sbh;     /* Buffer containing the super block */
  47         struct ext3_super_block * s_es; /* Pointer to the super block in the buffer */
  48         struct buffer_head ** s_group_desc;
  49         unsigned short s_loaded_inode_bitmaps;
  50         unsigned short s_loaded_block_bitmaps;
  51         unsigned long s_inode_bitmap_number[EXT3_MAX_GROUP_LOADED];
  52         struct buffer_head * s_inode_bitmap[EXT3_MAX_GROUP_LOADED];
  53         unsigned long s_block_bitmap_number[EXT3_MAX_GROUP_LOADED];
  54         struct buffer_head * s_block_bitmap[EXT3_MAX_GROUP_LOADED];
  55         unsigned long  s_mount_opt;
  56         uid_t s_resuid;
  57         gid_t s_resgid;
  58         unsigned short s_mount_state;
  59         unsigned short s_pad;
  60         int s_addr_per_block_bits;
  61         int s_desc_per_block_bits;
  62         int s_inode_size;
  63         int s_first_ino;
  64         u32 s_next_generation;
  65
  66         /* Journaling */
  67         struct inode * s_journal_inode;
  68         struct journal_s * s_journal;
  69         struct list_head s_orphan;
  70         unsigned long s_commit_interval;
  71         struct block_device *journal_bdev;
  72 #ifdef CONFIG_JBD_DEBUG
  73         struct timer_list turn_ro_timer;        /* For turning read-only (crash simulation) */
  74         wait_queue_head_t ro_wait_queue;        /* For people waiting for the fs to go read-only */
  75 #endif
  76 };
  77
  78 #endif  /* _LINUX_EXT3_FS_SB */