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#ifndef _AFFS_FS_I
#define _AFFS_FS_I
#include <linux/a.out.h>
#include <linux/time.h>
#define AFFS_MAX_PREALLOC 16 /* MUST be a power of 2 */
#define AFFS_KCSIZE 73 /* Allows for 1 extension block at 512 byte-blocks */
struct key_cache {
struct timeval kc_lru_time; /* Last time this cache was used */
s32 kc_first; /* First cached key */
s32 kc_last; /* Last cached key */
s32 kc_this_key; /* Key of extension block this data block keys are from */
int kc_this_seq; /* Sequence number of this extension block */
s32 kc_next_key; /* Key of next extension block */
s32 kc_keys[AFFS_KCSIZE]; /* Key cache */
};
#define EC_SIZE (PAGE_SIZE - 4 * sizeof(struct key_cache) - 4) / 4
struct ext_cache {
struct key_cache kc[4]; /* The 4 key caches */
s32 ec[EC_SIZE]; /* Keys of assorted extension blocks */
int max_ext; /* Index of last known extension block */
};
/*
* affs fs inode data in memory
*/
struct affs_inode_info {
u32 i_protect; /* unused attribute bits */
s32 i_parent; /* parent ino */
s32 i_original; /* if != 0, this is the key of the original */
s32 i_data[AFFS_MAX_PREALLOC]; /* preallocated blocks */
struct ext_cache *i_ec; /* Cache gets allocated dynamically */
int i_cache_users; /* Cache cannot be freed while > 0 */
int i_lastblock; /* last allocated block */
short i_pa_cnt; /* number of preallocated blocks */
short i_pa_next; /* Index of next block in i_data[] */
short i_pa_last; /* Index of next free slot in i_data[] */
short i_zone; /* write zone */
unsigned char i_hlink; /* This is a fake */
unsigned char i_pad;
};
#endif
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