[procfs] [1/1] fix task_mmu.c text size reporting

[William Lee Irwin III <wli@holomorphy.com>]

On Mon, Sep 13, 2004 at 01:50:03AM -0700, Andrew Morton wrote:
> Due to master.kernel.org being on the blink, 2.6.9-rc1-mm5 Is currently at
>  http://www.zip.com.au/~akpm/linux/patches/2.6.9-rc1-mm5/
> and will later appear at
>  ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.9-rc1/2.6.9-rc1-mm5/
> Please check kernel.org before using zip.com.au.

Not all binfmts page align ->end_code and ->start_code, so the task_mmu
statistics calculations need to perform this allocation themselves.

Index: mm5-2.6.9-rc1/fs/proc/task_mmu.c
===================================================================
--- mm5-2.6.9-rc1.orig/fs/proc/task_mmu.c	2004-09-13 16:27:35.915357248 -0700
+++ mm5-2.6.9-rc1/fs/proc/task_mmu.c	2004-09-13 19:43:19.681033496 -0700
@@ -9,7 +9,7 @@
 	unsigned long data, text, lib;
 
 	data = mm->total_vm - mm->shared_vm - mm->stack_vm;
-	text = (mm->end_code - mm->start_code) >> 10;
+	text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK)) >> 10;
 	lib = (mm->exec_vm << (PAGE_SHIFT-10)) - text;
 	buffer += sprintf(buffer,
 		"VmSize:\t%8lu kB\n"
@@ -36,7 +36,8 @@
 	       int *data, int *resident)
 {
 	*shared = mm->shared_vm;
-	*text = (mm->end_code - mm->start_code) >> PAGE_SHIFT;
+	*text = (PAGE_ALIGN(mm->end_code) - (mm->start_code & PAGE_MASK))
+								>> PAGE_SHIFT;
 	*data = mm->total_vm - mm->shared_vm - *text;
 	*resident = mm->rss;
 	return mm->total_vm;