| /* |
| * linux/include/linux/ext3_fs_sb.h |
| * |
| * Copyright (C) 1992, 1993, 1994, 1995 |
| * Remy Card ([email protected]) |
| * 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; |
| 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; |
| unsigned long s_commit_interval; |
| struct block_device *journal_bdev; |
| #ifdef CONFIG_JBD_DEBUG |
| struct timer_list turn_ro_timer; /* For turning read-only (crash simulation) */ |
| wait_queue_head_t ro_wait_queue; /* For people waiting for the fs to go read-only */ |
| #endif |
| #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 */ |
