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