1/* 2 * linux/include/linux/ext2_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_EXT2_FS_SB 17#define _LINUX_EXT2_FS_SB 18 19#include <linux/blockgroup_lock.h> 20#include <linux/percpu_counter.h> 21 22/* 23 * second extended-fs super-block data in memory 24 */ 25struct ext2_sb_info { 26 unsigned long s_frag_size; /* Size of a fragment in bytes */ 27 unsigned long s_frags_per_block;/* Number of fragments per block */ 28 unsigned long s_inodes_per_block;/* Number of inodes per block */ 29 unsigned long s_frags_per_group;/* Number of fragments in a group */ 30 unsigned long s_blocks_per_group;/* Number of blocks in a group */ 31 unsigned long s_inodes_per_group;/* Number of inodes in a group */ 32 unsigned long s_itb_per_group; /* Number of inode table blocks per group */ 33 unsigned long s_gdb_count; /* Number of group descriptor blocks */ 34 unsigned long s_desc_per_block; /* Number of group descriptors per block */ 35 unsigned long s_groups_count; /* Number of groups in the fs */ 36 struct buffer_head * s_sbh; /* Buffer containing the super block */ 37 struct ext2_super_block * s_es; /* Pointer to the super block in the buffer */ 38 struct buffer_head ** s_group_desc; 39 unsigned long s_mount_opt; 40 uid_t s_resuid; 41 gid_t s_resgid; 42 unsigned short s_mount_state; 43 unsigned short s_pad; 44 int s_addr_per_block_bits; 45 int s_desc_per_block_bits; 46 int s_inode_size; 47 int s_first_ino; 48 spinlock_t s_next_gen_lock; 49 u32 s_next_generation; 50 unsigned long s_dir_count; 51 u8 *s_debts; 52 struct percpu_counter s_freeblocks_counter; 53 struct percpu_counter s_freeinodes_counter; 54 struct percpu_counter s_dirs_counter; 55 struct blockgroup_lock s_blockgroup_lock; 56}; 57 58#endif /* _LINUX_EXT2_FS_SB */ 59