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Diffstat (limited to 'fs/xfs/xfs_mru_cache.h')
-rw-r--r--fs/xfs/xfs_mru_cache.h31
1 files changed, 12 insertions, 19 deletions
diff --git a/fs/xfs/xfs_mru_cache.h b/fs/xfs/xfs_mru_cache.h
index 36dd3ec8b4eb..fb5245ba5ff7 100644
--- a/fs/xfs/xfs_mru_cache.h
+++ b/fs/xfs/xfs_mru_cache.h
@@ -18,24 +18,15 @@
#ifndef __XFS_MRU_CACHE_H__
#define __XFS_MRU_CACHE_H__
+struct xfs_mru_cache;
-/* Function pointer type for callback to free a client's data pointer. */
-typedef void (*xfs_mru_cache_free_func_t)(unsigned long, void*);
+struct xfs_mru_cache_elem {
+ struct list_head list_node;
+ unsigned long key;
+};
-typedef struct xfs_mru_cache
-{
- struct radix_tree_root store; /* Core storage data structure. */
- struct list_head *lists; /* Array of lists, one per grp. */
- struct list_head reap_list; /* Elements overdue for reaping. */
- spinlock_t lock; /* Lock to protect this struct. */
- unsigned int grp_count; /* Number of discrete groups. */
- unsigned int grp_time; /* Time period spanned by grps. */
- unsigned int lru_grp; /* Group containing time zero. */
- unsigned long time_zero; /* Time first element was added. */
- xfs_mru_cache_free_func_t free_func; /* Function pointer for freeing. */
- struct delayed_work work; /* Workqueue data for reaping. */
- unsigned int queued; /* work has been queued */
-} xfs_mru_cache_t;
+/* Function pointer type for callback to free a client's data pointer. */
+typedef void (*xfs_mru_cache_free_func_t)(struct xfs_mru_cache_elem *elem);
int xfs_mru_cache_init(void);
void xfs_mru_cache_uninit(void);
@@ -44,10 +35,12 @@ int xfs_mru_cache_create(struct xfs_mru_cache **mrup, unsigned int lifetime_ms,
xfs_mru_cache_free_func_t free_func);
void xfs_mru_cache_destroy(struct xfs_mru_cache *mru);
int xfs_mru_cache_insert(struct xfs_mru_cache *mru, unsigned long key,
- void *value);
-void * xfs_mru_cache_remove(struct xfs_mru_cache *mru, unsigned long key);
+ struct xfs_mru_cache_elem *elem);
+struct xfs_mru_cache_elem *
+xfs_mru_cache_remove(struct xfs_mru_cache *mru, unsigned long key);
void xfs_mru_cache_delete(struct xfs_mru_cache *mru, unsigned long key);
-void *xfs_mru_cache_lookup(struct xfs_mru_cache *mru, unsigned long key);
+struct xfs_mru_cache_elem *
+xfs_mru_cache_lookup(struct xfs_mru_cache *mru, unsigned long key);
void xfs_mru_cache_done(struct xfs_mru_cache *mru);
#endif /* __XFS_MRU_CACHE_H__ */