1 files changed, 18 insertions, 8 deletions

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index b54a0348a890..0881b5cdee3d 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -54,16 +54,23 @@ struct as_io_context {
 
 struct cfq_queue;
 struct cfq_io_context {
-        void (*dtor)(struct cfq_io_context *);
-        void (*exit)(struct cfq_io_context *);
-
-        struct io_context *ioc;
-
         /*
          * circular list of cfq_io_contexts belonging to a process io context
          */
         struct list_head list;
         struct cfq_queue *cfqq;
+        void *key;
+
+        struct io_context *ioc;
+
+        unsigned long last_end_request;
+        unsigned long last_queue;
+        unsigned long ttime_total;
+        unsigned long ttime_samples;
+        unsigned long ttime_mean;
+
+        void (*dtor)(struct cfq_io_context *);
+        void (*exit)(struct cfq_io_context *);
 };
 
 /*
@@ -73,7 +80,9 @@ struct cfq_io_context {
  */
 struct io_context {
         atomic_t refcount;
-        pid_t pid;
+        struct task_struct *task;
+
+        int (*set_ioprio)(struct io_context *, unsigned int);
 
         /*
          * For request batching
@@ -81,14 +90,13 @@ struct io_context {
         unsigned long last_waited; /* Time last woken after wait for request */
         int nr_batch_requests;     /* Number of requests left in the batch */
 
-        spinlock_t lock;
-
         struct as_io_context *aic;
         struct cfq_io_context *cic;
 };
 
 void put_io_context(struct io_context *ioc);
 void exit_io_context(void);
+struct io_context *current_io_context(int gfp_flags);
 struct io_context *get_io_context(int gfp_flags);
 void copy_io_context(struct io_context **pdst, struct io_context **psrc);
 void swap_io_context(struct io_context **ioc1, struct io_context **ioc2);
@@ -134,6 +142,8 @@ struct request {
 
         void *elevator_private;
 
+        unsigned short ioprio;
+
         int rq_status;  /* should split this into a few status bits */
         struct gendisk *rq_disk;
         int errors;