proc: use unsigned long inside /proc/*/statm

/proc/*/statm code needlessly truncates data from unsigned long to int.
One needs only 8+ TB of RAM to make truncation visible.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 3 deletions

diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
index cb6306e6384..b535d3e5d5f 100644
--- a/fs/proc/task_nommu.c
+++ b/fs/proc/task_nommu.c
@@ -92,13 +92,14 @@ unsigned long task_vsize(struct mm_struct *mm)
         return vsize;
 }
 
-int task_statm(struct mm_struct *mm, int *shared, int *text,
-               int *data, int *resident)
+unsigned long task_statm(struct mm_struct *mm,
+                         unsigned long *shared, unsigned long *text,
+                         unsigned long *data, unsigned long *resident)
 {
         struct vm_area_struct *vma;
         struct vm_region *region;
         struct rb_node *p;
-        int size = kobjsize(mm);
+        unsigned long size = kobjsize(mm);
 
         down_read(&mm->mmap_sem);
         for (p = rb_first(&mm->mm_rb); p; p = rb_next(p)) {