fs-writeback: Add helper function to start writeback if idle

[safe/jmp/linux-2.6] / fs / proc / array.c

diff --git a/fs/proc/array.c b/fs/proc/array.c
index ca61a88..f560325 100644 (file)
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -134,13 +134,16 @@ static inline void task_name(struct seq_file *m, struct task_struct *p)
  * simple bit tests.
  */
 static const char *task_state_array[] = {
-       "R (running)",          /*  0 */
-       "S (sleeping)",         /*  1 */
-       "D (disk sleep)",       /*  2 */
-       "T (stopped)",          /*  4 */
-       "T (tracing stop)",     /*  8 */
-       "Z (zombie)",           /* 16 */
-       "X (dead)"              /* 32 */
+       "R (running)",          /*   0 */
+       "S (sleeping)",         /*   1 */
+       "D (disk sleep)",       /*   2 */
+       "T (stopped)",          /*   4 */
+       "t (tracing stop)",     /*   8 */
+       "Z (zombie)",           /*  16 */
+       "X (dead)",             /*  32 */
+       "x (dead)",             /*  64 */
+       "K (wakekill)",         /* 128 */
+       "W (waking)",           /* 256 */
 };
 
 static inline const char *get_task_state(struct task_struct *tsk)
@@ -148,6 +151,8 @@ static inline const char *get_task_state(struct task_struct *tsk)
        unsigned int state = (tsk->state & TASK_REPORT) | tsk->exit_state;
        const char **p = &task_state_array[0];
 
+       BUILD_BUG_ON(1 + ilog2(TASK_STATE_MAX) != ARRAY_SIZE(task_state_array));
+
        while (state) {
                p++;
                state >>= 1;
@@ -506,7 +511,6 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
 
                /* add up live thread stats at the group level */
                if (whole) {
-                       struct task_cputime cputime;
                        struct task_struct *t = task;
                        do {
                                min_flt += t->min_flt;
@@ -517,9 +521,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
 
                        min_flt += sig->min_flt;
                        maj_flt += sig->maj_flt;
-                       thread_group_cputime(task, &cputime);
-                       utime = cputime.utime;
-                       stime = cputime.stime;
+                       thread_group_times(task, &utime, &stime);
                        gtime = cputime_add(gtime, sig->gtime);
                }
 
@@ -581,7 +583,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
                rsslim,
                mm ? mm->start_code : 0,
                mm ? mm->end_code : 0,
-               (permitted) ? task->stack_start : 0,
+               (permitted && mm) ? task->stack_start : 0,
                esp,
                eip,
                /* The signal information here is obsolete.