From 1a78cedb998027ed46d8630b319db8fa678d38f0 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Mon, 12 Oct 2009 03:20:57 -0700
Subject: sparc64: Fix D-cache flushing on swapin from SW devices.
Thanks to tip form ARM folks and Russell King.
If flush_dcache_page() occurs on a swapin it will have a mapping
and we'll try to defer the flush by setting the dirty bit.
But when it hits update_dcache_page() we won't flush because the
page won't have a mapping any more. So remove the mapping
requirement in flush_dcache().
Signed-off-by: David S. Miller <davem@davemloft.net>
---
arch/sparc/mm/init_64.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
(limited to 'arch')
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index a70a5e1904d9..1886d37d411b 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -265,7 +265,7 @@ static void flush_dcache(unsigned long pfn)
struct page *page;
page = pfn_to_page(pfn);
- if (page && page_mapping(page)) {
+ if (page) {
unsigned long pg_flags;
pg_flags = page->flags;
--
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