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, 3 insertions, 2 deletions

diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index c126c83b9a45..c3755bd8dd3e 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -66,8 +66,9 @@ unsigned long task_vsize(struct mm_struct *mm)
         return PAGE_SIZE * mm->total_vm;
 }
 
-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)
 {
         *shared = get_mm_counter(mm, MM_FILEPAGES);
         *text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK))