1 files changed, 8 insertions, 35 deletions

diff --git a/include/linux/iocontext.h b/include/linux/iocontext.h
index 4da4a75c3f1e..a0bb301afac0 100644
--- a/include/linux/iocontext.h
+++ b/include/linux/iocontext.h
@@ -4,32 +4,6 @@
 #include <linux/radix-tree.h>
 #include <linux/rcupdate.h>
 
-/*
- * This is the per-process anticipatory I/O scheduler state.
- */
-struct as_io_context {
-        spinlock_t lock;
-
-        void (*dtor)(struct as_io_context *aic); /* destructor */
-        void (*exit)(struct as_io_context *aic); /* called on task exit */
-
-        unsigned long state;
-        atomic_t nr_queued; /* queued reads & sync writes */
-        atomic_t nr_dispatched; /* number of requests gone to the drivers */
-
-        /* IO History tracking */
-        /* Thinktime */
-        unsigned long last_end_request;
-        unsigned long ttime_total;
-        unsigned long ttime_samples;
-        unsigned long ttime_mean;
-        /* Layout pattern */
-        unsigned int seek_samples;
-        sector_t last_request_pos;
-        u64 seek_total;
-        sector_t seek_mean;
-};
-
 struct cfq_queue;
 struct cfq_io_context {
         void *key;
@@ -40,16 +14,11 @@ struct cfq_io_context {
         struct io_context *ioc;
 
         unsigned long last_end_request;
-        sector_t last_request_pos;
 
         unsigned long ttime_total;
         unsigned long ttime_samples;
         unsigned long ttime_mean;
 
-        unsigned int seek_samples;
-        u64 seek_total;
-        sector_t seek_mean;
-
         struct list_head queue_list;
         struct hlist_node cic_list;
 
@@ -73,13 +42,16 @@ struct io_context {
         unsigned short ioprio;
         unsigned short ioprio_changed;
 
+#if defined(CONFIG_BLK_CGROUP) || defined(CONFIG_BLK_CGROUP_MODULE)
+        unsigned short cgroup_changed;
+#endif
+
         /*
          * For request batching
          */
-        unsigned long last_waited; /* Time last woken after wait for request */
         int nr_batch_requests;     /* Number of requests left in the batch */
+        unsigned long last_waited; /* Time last woken after wait for request */
 
-        struct as_io_context *aic;
         struct radix_tree_root radix_root;
         struct hlist_head cic_list;
         void *ioc_data;
@@ -99,14 +71,15 @@ static inline struct io_context *ioc_task_link(struct io_context *ioc)
         return NULL;
 }
 
+struct task_struct;
 #ifdef CONFIG_BLOCK
 int put_io_context(struct io_context *ioc);
-void exit_io_context(void);
+void exit_io_context(struct task_struct *task);
 struct io_context *get_io_context(gfp_t gfp_flags, int node);
 struct io_context *alloc_io_context(gfp_t gfp_flags, int node);
 void copy_io_context(struct io_context **pdst, struct io_context **psrc);
 #else
-static inline void exit_io_context(void)
+static inline void exit_io_context(struct task_struct *task)
 {
 }