[PATCH] Update cfq io scheduler to time sliced design

[mirror_ubuntu-zesty-kernel.git] / include / linux / sched.h

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 9530b19031609cb3136c40795461f10a7d87f897..ff48815bd3a2374600b0fce516f48ce3941599b1 100644 (file)
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -608,6 +608,8 @@ struct task_struct {
        struct list_head run_list;
        prio_array_t *array;
 
+       unsigned short ioprio;
+
        unsigned long sleep_avg;
        unsigned long long timestamp, last_ran;
        unsigned long long sched_time; /* sched_clock time spent running */
@@ -763,6 +765,7 @@ struct task_struct {
        nodemask_t mems_allowed;
        int cpuset_mems_generation;
 #endif
+       atomic_t fs_excl;       /* holding fs exclusive resources */
 };
 
 static inline pid_t process_group(struct task_struct *tsk)
@@ -1112,7 +1115,8 @@ extern void unhash_process(struct task_struct *p);
 
 /*
  * Protects ->fs, ->files, ->mm, ->ptrace, ->group_info, ->comm, keyring
- * subscriptions and synchronises with wait4().  Also used in procfs.
+ * subscriptions and synchronises with wait4().  Also used in procfs.  Also
+ * pins the final release of task.io_context.
  *
  * Nests both inside and outside of read_lock(&tasklist_lock).
  * It must not be nested with write_lock_irq(&tasklist_lock),