xiaomi-sm8450/android_kernel_xiaomi_sm8450
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[PATCH] mm: split highorder pages

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Have an explicit mm call to split higher order pages into individual pages.
 Should help to avoid bugs and be more explicit about the code's intention.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: David Howells <dhowells@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Chris Zankel <chris@zankel.net>
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Nick Piggin
2006-03-22 00:08:05 -08:00
committed by Linus Torvalds
parent 8e7a9aae91
commit 8dfcc9ba27
9 changed files with 41 additions and 21 deletions
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5
arch/mips/mm/init.c
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@@ -54,7 +54,8 @@ unsigned long empty_zero_page, zero_page_mask;
*/
unsigned long setup_zero_pages(void)
{
unsigned long order, size;
unsigned int order;
unsigned long size;
struct page *page;
if (cpu_has_vce)
@@ -67,9 +68,9 @@ unsigned long setup_zero_pages(void)
panic("Oh boy, that early out of memory?");
page = virt_to_page(empty_zero_page);
split_page(page, order);
while (page < virt_to_page(empty_zero_page + (PAGE_SIZE << order))) {
SetPageReserved(page);
set_page_count(page, 1);
page++;
}