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1da177e4 LT |
1 | #ifndef __SHMEM_FS_H |
2 | #define __SHMEM_FS_H | |
3 | ||
4 | #include <linux/swap.h> | |
5 | #include <linux/mempolicy.h> | |
6 | ||
7 | /* inode in-kernel data */ | |
8 | ||
9 | #define SHMEM_NR_DIRECT 16 | |
10 | ||
11 | struct shmem_inode_info { | |
12 | spinlock_t lock; | |
13 | unsigned long flags; | |
14 | unsigned long alloced; /* data pages alloced to file */ | |
15 | unsigned long swapped; /* subtotal assigned to swap */ | |
16 | unsigned long next_index; /* highest alloced index + 1 */ | |
17 | struct shared_policy policy; /* NUMA memory alloc policy */ | |
18 | struct page *i_indirect; /* top indirect blocks page */ | |
19 | swp_entry_t i_direct[SHMEM_NR_DIRECT]; /* first blocks */ | |
20 | struct list_head swaplist; /* chain of maybes on swap */ | |
21 | struct inode vfs_inode; | |
22 | }; | |
23 | ||
24 | struct shmem_sb_info { | |
25 | unsigned long max_blocks; /* How many blocks are allowed */ | |
26 | unsigned long free_blocks; /* How many are left for allocation */ | |
27 | unsigned long max_inodes; /* How many inodes are allowed */ | |
28 | unsigned long free_inodes; /* How many are left for allocation */ | |
7339ff83 RH |
29 | int policy; /* Default NUMA memory alloc policy */ |
30 | nodemask_t policy_nodes; /* nodemask for preferred and bind */ | |
1da177e4 LT |
31 | spinlock_t stat_lock; |
32 | }; | |
33 | ||
34 | static inline struct shmem_inode_info *SHMEM_I(struct inode *inode) | |
35 | { | |
36 | return container_of(inode, struct shmem_inode_info, vfs_inode); | |
37 | } | |
38 | ||
39 | #endif |