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authorPaul Mundt <lethal@linux-sh.org>2007-03-05 19:46:47 +0900
committerPaul Mundt <lethal@linux-sh.org>2007-03-05 19:46:47 +0900
commit39e688a94b94eaba768b1494e19e96f828fc2688 (patch)
tree706ce255a95d0705241beafb8354fb7253a24af4 /arch/sh/mm/cache-sh4.c
parentc87a7111349891043cb0a62b0ba745264d4b600a (diff)
sh: Revert lazy dcache writeback changes.
These ended up causing too many problems on older parts, revert for now.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/mm/cache-sh4.c')
-rw-r--r--arch/sh/mm/cache-sh4.c12
1 files changed, 1 insertions, 11 deletions
diff --git a/arch/sh/mm/cache-sh4.c b/arch/sh/mm/cache-sh4.c
index e0cd4b7f4aeb..981b04089055 100644
--- a/arch/sh/mm/cache-sh4.c
+++ b/arch/sh/mm/cache-sh4.c
@@ -237,20 +237,10 @@ static inline void flush_cache_4096(unsigned long start,
/*
* Write back & invalidate the D-cache of the page.
* (To avoid "alias" issues)
- *
- * This uses a lazy write-back on UP, which is explicitly
- * disabled on SMP.
*/
void flush_dcache_page(struct page *page)
{
-#ifndef CONFIG_SMP
- struct address_space *mapping = page_mapping(page);
-
- if (mapping && !mapping_mapped(mapping))
- set_bit(PG_dcache_dirty, &page->flags);
- else
-#endif
- {
+ if (test_bit(PG_mapped, &page->flags)) {
unsigned long phys = PHYSADDR(page_address(page));
unsigned long addr = CACHE_OC_ADDRESS_ARRAY;
int i, n;