[PATCH] statm: fix negative data

The sixth "data" field of /proc/$pid/statm was sometimes negative: text is
a subset of shared_vm, and so was subtracted twice from total_vm.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Acked-by: William Irwin <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

fs/proc/task_mmu.c

@@ -40,7 +40,7 @@ int task_statm(struct mm_struct *mm, int *shared, int *text,
 	*shared = mm->rss - mm->anon_rss;
 	*text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK))
 								>> PAGE_SHIFT;
-	*data = mm->total_vm - mm->shared_vm - *text;
+	*data = mm->total_vm - mm->shared_vm;
 	*resident = mm->rss;
 	return mm->total_vm;
 }