Merge branch 'w90x900' into devel

[~andy/linux] / fs / fscache / internal.h

diff --git a/fs/fscache/internal.h b/fs/fscache/internal.h
index 4113af8d1660c99b2710209be047205362bd92f8..1c341304621fc7b132b0f2fffa91ab283f758779 100644 (file)
--- a/fs/fscache/internal.h
+++ b/fs/fscache/internal.h
@@ -28,13 +28,30 @@
 #define FSCACHE_MAX_THREADS    32
 
 /*
- * fsc-fsdef.c
+ * cache.c
+ */
+extern struct list_head fscache_cache_list;
+extern struct rw_semaphore fscache_addremove_sem;
+
+extern struct fscache_cache *fscache_select_cache_for_object(
+       struct fscache_cookie *);
+
+/*
+ * cookie.c
+ */
+extern struct kmem_cache *fscache_cookie_jar;
+
+extern void fscache_cookie_init_once(void *);
+extern void __fscache_cookie_put(struct fscache_cookie *);
+
+/*
+ * fsdef.c
  */
 extern struct fscache_cookie fscache_fsdef_index;
 extern struct fscache_cookie_def fscache_fsdef_netfs_def;
 
 /*
- * fsc-histogram.c
+ * histogram.c
  */
 #ifdef CONFIG_FSCACHE_HISTOGRAM
 extern atomic_t fscache_obj_instantiate_histogram[HZ];
@@ -58,15 +75,36 @@ extern const struct file_operations fscache_histogram_fops;
 #endif
 
 /*
- * fsc-main.c
+ * main.c
  */
 extern unsigned fscache_defer_lookup;
 extern unsigned fscache_defer_create;
 extern unsigned fscache_debug;
 extern struct kobject *fscache_root;
 
+extern int fscache_wait_bit(void *);
+extern int fscache_wait_bit_interruptible(void *);
+
 /*
- * fsc-proc.c
+ * object.c
+ */
+extern void fscache_withdrawing_object(struct fscache_cache *,
+                                      struct fscache_object *);
+extern void fscache_enqueue_object(struct fscache_object *);
+
+/*
+ * operation.c
+ */
+extern int fscache_submit_exclusive_op(struct fscache_object *,
+                                      struct fscache_operation *);
+extern int fscache_submit_op(struct fscache_object *,
+                            struct fscache_operation *);
+extern void fscache_abort_object(struct fscache_object *);
+extern void fscache_start_operations(struct fscache_object *);
+extern void fscache_operation_gc(struct work_struct *);
+
+/*
+ * proc.c
  */
 #ifdef CONFIG_PROC_FS
 extern int __init fscache_proc_init(void);
@@ -77,7 +115,7 @@ extern void fscache_proc_cleanup(void);
 #endif
 
 /*
- * fsc-stats.c
+ * stats.c
  */
 #ifdef CONFIG_FSCACHE_STATS
 extern atomic_t fscache_n_ops_processed[FSCACHE_MAX_THREADS];
@@ -168,6 +206,50 @@ extern const struct file_operations fscache_stats_fops;
 #define fscache_stat(stat) do {} while (0)
 #endif
 
+/*
+ * raise an event on an object
+ * - if the event is not masked for that object, then the object is
+ *   queued for attention by the thread pool.
+ */
+static inline void fscache_raise_event(struct fscache_object *object,
+                                      unsigned event)
+{
+       if (!test_and_set_bit(event, &object->events) &&
+           test_bit(event, &object->event_mask))
+               fscache_enqueue_object(object);
+}
+
+/*
+ * drop a reference to a cookie
+ */
+static inline void fscache_cookie_put(struct fscache_cookie *cookie)
+{
+       BUG_ON(atomic_read(&cookie->usage) <= 0);
+       if (atomic_dec_and_test(&cookie->usage))
+               __fscache_cookie_put(cookie);
+}
+
+/*
+ * get an extra reference to a netfs retrieval context
+ */
+static inline
+void *fscache_get_context(struct fscache_cookie *cookie, void *context)
+{
+       if (cookie->def->get_context)
+               cookie->def->get_context(cookie->netfs_data, context);
+       return context;
+}
+
+/*
+ * release a reference to a netfs retrieval context
+ */
+static inline
+void fscache_put_context(struct fscache_cookie *cookie, void *context)
+{
+       if (cookie->def->put_context)
+               cookie->def->put_context(cookie->netfs_data, context);
+}
+
 /*****************************************************************************/
 /*
  * debug tracing