Commit 1a78cedb authored Oct 12, 2009 by David S. Miller

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>

parent de23cf3c

arch/sparc/mm/init_64.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;