Re: Make sure we populate the initroot filesystem late enough

From: David Woodhouse
Date: Sun Feb 25 2007 - 20:17:43 EST


On Sun, 2007-02-25 at 16:24 -0800, Linus Torvalds wrote:
> Hmm. No, I don't think that should be a problem. free_initmem() only
> happens at the very, after do_basic_setup() has been run, which
> includes all the initcall stuff.

I'm inclined to agree that it _shouldn't_ be a problem. Nevertheless,
even this hack seems sufficient to 'fix' it:

--- arch/powerpc/mm/init_32.c 2007-02-25 20:06:54.000000000 -0500
+++ arch/powerpc/mm/init_32.c.not 2007-02-25 20:06:41.000000000 -0500
@@ -243,13 +243,14 @@ void free_initmem(void)
#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{
if (start < end)
- printk ("Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
+ printk ("NOT Freeing initrd memory: %ldKiB would be freed\n", (end - start) >> 10);
+ return;
for (; start < end; start += PAGE_SIZE) {
ClearPageReserved(virt_to_page(start));
init_page_count(virt_to_page(start));
free_page(start);
totalram_pages++;
}
}
#endif


--
dwmw2

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