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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | #ifndef __SHMEM_FS_H |
| 2 | #define __SHMEM_FS_H |
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| 3 | |||
| 4 | #include <linux/swap.h> |
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| 5 | |||
| 6 | /* inode in-kernel data */ |
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| 7 | |||
| 8 | #define SHMEM_NR_DIRECT 16 |
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| 9 | |||
| 10 | struct shmem_inode_info { |
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| 11 | spinlock_t lock; |
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| 12 | unsigned long next_index; |
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| 13 | swp_entry_t i_direct[SHMEM_NR_DIRECT]; /* for the first blocks */ |
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| 14 | struct page *i_indirect; /* indirect blocks */ |
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| 15 | unsigned long alloced; /* data pages allocated to file */ |
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| 16 | unsigned long swapped; /* subtotal assigned to swap */ |
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| 17 | unsigned long flags; |
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| 18 | struct list_head list; |
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| 19 | struct inode vfs_inode; |
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| 20 | }; |
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| 21 | |||
| 22 | struct shmem_sb_info { |
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| 23 | unsigned long max_blocks; /* How many blocks are allowed */ |
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| 24 | unsigned long free_blocks; /* How many are left for allocation */ |
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| 25 | unsigned long max_inodes; /* How many inodes are allowed */ |
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| 26 | unsigned long free_inodes; /* How many are left for allocation */ |
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| 27 | spinlock_t stat_lock; |
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| 28 | }; |
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| 29 | |||
| 30 | static inline struct shmem_inode_info *SHMEM_I(struct inode *inode) |
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| 31 | { |
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| 32 | return container_of(inode, struct shmem_inode_info, vfs_inode); |
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| 33 | } |
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| 34 | |||
| 35 | #endif |