procfs: use proper units for noMMU statm

On no-MMU systems, sizes reported in /proc/n/statm have units of bytes. Per Documentation/filesystems/proc.txt, these values should be in pages. Signed-off-by: Steven J. Magnani <[email protected]> Cc: Greg Ungerer <[email protected]> Cc: David Howells <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
makiko-fly · Dec 15, 2009 · 7e1e0ef · 7e1e0ef
1 parent ea63763
commit 7e1e0ef
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
@@ -110,9 +110,13 @@ int task_statm(struct mm_struct *mm, int *shared, int *text,
 		}
 	}
 
-	size += (*text = mm->end_code - mm->start_code);
-	size += (*data = mm->start_stack - mm->start_data);
+	*text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK))
+		>> PAGE_SHIFT;
+	*data = (PAGE_ALIGN(mm->start_stack) - (mm->start_data & PAGE_MASK))
+		>> PAGE_SHIFT;
 	up_read(&mm->mmap_sem);
+	size >>= PAGE_SHIFT;
+	size += *text + *data;
 	*resident = size;
 	return size;
 }