maps4: move clear_refs code to task_mmu.c

[deliverable/linux.git] / fs / proc / base.c

diff --git a/fs/proc/base.c b/fs/proc/base.c
index 33537487f5abe4dadb7c90068dfb961528bdaaaf..1bd646d3fe9a1d1ecca82e64f638a58a66b4da18 100644 (file)
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -88,10 +88,6 @@
  *     in /proc for a task before it execs a suid executable.
  */
 
-
-/* Worst case buffer size needed for holding an integer. */
-#define PROC_NUMBUF 13
-
 struct pid_entry {
        char *name;
        int len;
@@ -935,42 +931,6 @@ static const struct file_operations proc_oom_adjust_operations = {
        .write          = oom_adjust_write,
 };
 
-#ifdef CONFIG_MMU
-static ssize_t clear_refs_write(struct file *file, const char __user *buf,
-                               size_t count, loff_t *ppos)
-{
-       struct task_struct *task;
-       char buffer[PROC_NUMBUF], *end;
-       struct mm_struct *mm;
-
-       memset(buffer, 0, sizeof(buffer));
-       if (count > sizeof(buffer) - 1)
-               count = sizeof(buffer) - 1;
-       if (copy_from_user(buffer, buf, count))
-               return -EFAULT;
-       if (!simple_strtol(buffer, &end, 0))
-               return -EINVAL;
-       if (*end == '\n')
-               end++;
-       task = get_proc_task(file->f_path.dentry->d_inode);
-       if (!task)
-               return -ESRCH;
-       mm = get_task_mm(task);
-       if (mm) {
-               clear_refs_smap(mm);
-               mmput(mm);
-       }
-       put_task_struct(task);
-       if (end - buffer == 0)
-               return -EIO;
-       return end - buffer;
-}
-
-static struct file_operations proc_clear_refs_operations = {
-       .write          = clear_refs_write,
-};
-#endif
-
 #ifdef CONFIG_AUDITSYSCALL
 #define TMPBUFLEN 21
 static ssize_t proc_loginuid_read(struct file * file, char __user * buf,