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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | #ifndef _AFFS_FS_I |
| 2 | #define _AFFS_FS_I |
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| 3 | |||
| 4 | #include <linux/a.out.h> |
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| 5 | #include <linux/fs.h> |
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| 6 | #include <asm/semaphore.h> |
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| 7 | |||
| 8 | #define AFFS_CACHE_SIZE PAGE_SIZE |
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| 9 | //#define AFFS_CACHE_SIZE (4*4) |
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| 10 | |||
| 11 | #define AFFS_MAX_PREALLOC 32 |
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| 12 | #define AFFS_LC_SIZE (AFFS_CACHE_SIZE/sizeof(u32)/2) |
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| 13 | #define AFFS_AC_SIZE (AFFS_CACHE_SIZE/sizeof(struct affs_ext_key)/2) |
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| 14 | #define AFFS_AC_MASK (AFFS_AC_SIZE-1) |
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| 15 | |||
| 16 | struct affs_ext_key { |
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| 17 | u32 ext; /* idx of the extended block */ |
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| 18 | u32 key; /* block number */ |
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| 19 | }; |
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| 20 | |||
| 21 | /* |
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| 22 | * affs fs inode data in memory |
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| 23 | */ |
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| 24 | struct affs_inode_info { |
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| 25 | u32 i_opencnt; |
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| 26 | struct semaphore i_link_lock; /* Protects internal inode access. */ |
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| 27 | struct semaphore i_ext_lock; /* Protects internal inode access. */ |
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| 28 | #define i_hash_lock i_ext_lock |
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| 29 | u32 i_blkcnt; /* block count */ |
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| 30 | u32 i_extcnt; /* extended block count */ |
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| 31 | u32 *i_lc; /* linear cache of extended blocks */ |
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| 32 | u32 i_lc_size; |
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| 33 | u32 i_lc_shift; |
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| 34 | u32 i_lc_mask; |
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| 35 | struct affs_ext_key *i_ac; /* associative cache of extended blocks */ |
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| 36 | u32 i_ext_last; /* last accessed extended block */ |
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| 37 | struct buffer_head *i_ext_bh; /* bh of last extended block */ |
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| 38 | loff_t mmu_private; |
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| 39 | u32 i_protect; /* unused attribute bits */ |
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| 40 | u32 i_lastalloc; /* last allocated block */ |
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| 41 | int i_pa_cnt; /* number of preallocated blocks */ |
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| 42 | #if 0 |
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| 43 | s32 i_original; /* if != 0, this is the key of the original */ |
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| 44 | u32 i_data[AFFS_MAX_PREALLOC]; /* preallocated blocks */ |
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| 45 | int i_cache_users; /* Cache cannot be freed while > 0 */ |
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| 46 | unsigned char i_hlink; /* This is a fake */ |
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| 47 | unsigned char i_pad; |
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| 48 | s32 i_parent; /* parent ino */ |
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| 49 | #endif |
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| 50 | struct inode vfs_inode; |
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| 51 | }; |
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| 52 | |||
| 53 | /* short cut to get to the affs specific inode data */ |
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| 54 | static inline struct affs_inode_info *AFFS_I(struct inode *inode) |
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| 55 | { |
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| 56 | return list_entry(inode, struct affs_inode_info, vfs_inode); |
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| 57 | } |
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| 58 | |||
| 59 | #endif |