3 files changed, 20 insertions, 17 deletions

diff --git a/fs/proc/array.c b/fs/proc/array.c
index 6ba2746e4517..7e9f3b65f25b 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -77,6 +77,7 @@
 #include <linux/cpuset.h>
 #include <linux/rcupdate.h>
 #include <linux/delayacct.h>
+#include <linux/seq_file.h>
 #include <linux/pid_namespace.h>
 
 #include <asm/pgtable.h>
@@ -390,14 +391,14 @@ static cputime_t task_gtime(struct task_struct *p)
         return p->gtime;
 }
 
-static int do_task_stat(struct task_struct *task, char *buffer, int whole)
+static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
+                        struct pid *pid, struct task_struct *task, int whole)
 {
         unsigned long vsize, eip, esp, wchan = ~0UL;
         long priority, nice;
         int tty_pgrp = -1, tty_nr = 0;
         sigset_t sigign, sigcatch;
         char state;
-        int res;
         pid_t ppid = 0, pgid = -1, sid = -1;
         int num_threads = 0;
         struct mm_struct *mm;
@@ -409,9 +410,6 @@ static int do_task_stat(struct task_struct *task, char *buffer, int whole)
         unsigned long rsslim = 0;
         char tcomm[sizeof(task->comm)];
         unsigned long flags;
-        struct pid_namespace *ns;
-
-        ns = current->nsproxy->pid_ns;
 
         state = *get_task_state(task);
         vsize = eip = esp = 0;
@@ -498,10 +496,10 @@ static int do_task_stat(struct task_struct *task, char *buffer, int whole)
         /* convert nsec -> ticks */
         start_time = nsec_to_clock_t(start_time);
 
-        res = sprintf(buffer, "%d (%s) %c %d %d %d %d %d %u %lu \
+        seq_printf(m, "%d (%s) %c %d %d %d %d %d %u %lu \
 %lu %lu %lu %lu %lu %ld %ld %ld %ld %d 0 %llu %lu %ld %lu %lu %lu %lu %lu \
 %lu %lu %lu %lu %lu %lu %lu %lu %d %d %u %u %llu %lu %ld\n",
-                task_pid_nr_ns(task, ns),
+                pid_nr_ns(pid, ns),
                 tcomm,
                 state,
                 ppid,
@@ -550,17 +548,19 @@ static int do_task_stat(struct task_struct *task, char *buffer, int whole)
                 cputime_to_clock_t(cgtime));
         if (mm)
                 mmput(mm);
-        return res;
+        return 0;
 }
 
-int proc_tid_stat(struct task_struct *task, char *buffer)
+int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns,
+                        struct pid *pid, struct task_struct *task)
 {
-        return do_task_stat(task, buffer, 0);
+        return do_task_stat(m, ns, pid, task, 0);
 }
 
-int proc_tgid_stat(struct task_struct *task, char *buffer)
+int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,
+                        struct pid *pid, struct task_struct *task)
 {
-        return do_task_stat(task, buffer, 1);
+        return do_task_stat(m, ns, pid, task, 1);
 }
 
 int proc_pid_statm(struct task_struct *task, char *buffer)
diff --git a/fs/proc/base.c b/fs/proc/base.c
index f4b1e14bd95b..f77818ecaa8a 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2280,7 +2280,7 @@ static const struct pid_entry tgid_base_stuff[] = {
         REG("sched",      S_IRUGO|S_IWUSR, pid_sched),
 #endif
         INF("cmdline",    S_IRUGO, pid_cmdline),
-        INF("stat",       S_IRUGO, tgid_stat),
+        ONE("stat",       S_IRUGO, tgid_stat),
         INF("statm",      S_IRUGO, pid_statm),
         REG("maps",       S_IRUGO, maps),
 #ifdef CONFIG_NUMA
@@ -2611,7 +2611,7 @@ static const struct pid_entry tid_base_stuff[] = {
         REG("sched",     S_IRUGO|S_IWUSR, pid_sched),
 #endif
         INF("cmdline",   S_IRUGO, pid_cmdline),
-        INF("stat",      S_IRUGO, tid_stat),
+        ONE("stat",      S_IRUGO, tid_stat),
         INF("statm",     S_IRUGO, pid_statm),
         REG("maps",      S_IRUGO, maps),
 #ifdef CONFIG_NUMA
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 7d57e8069924..f1cc6f1f4e34 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -46,10 +46,13 @@ extern int nommu_vma_show(struct seq_file *, struct vm_area_struct *);
 
 extern int maps_protect;
 
-extern void create_seq_entry(char *name, mode_t mode, const struct file_operations *f);
+extern void create_seq_entry(char *name, mode_t mode,
+                                const struct file_operations *f);
 extern int proc_exe_link(struct inode *, struct dentry **, struct vfsmount **);
-extern int proc_tid_stat(struct task_struct *,  char *);
-extern int proc_tgid_stat(struct task_struct *, char *);
+extern int proc_tid_stat(struct seq_file *m, struct pid_namespace *ns,
+                                struct pid *pid, struct task_struct *task);
+extern int proc_tgid_stat(struct seq_file *m, struct pid_namespace *ns,
+                                struct pid *pid, struct task_struct *task);
 extern int proc_pid_status(struct task_struct *, char *);
 extern int proc_pid_statm(struct task_struct *, char *);
 extern loff_t mem_lseek(struct file *file, loff_t offset, int orig);