Commit 1a78cedb authored by David S. Miller's avatar David S. Miller
Browse files

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: default avatarDavid S. Miller <davem@davemloft.net>
parent de23cf3c
......@@ -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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