[PATCH] [ARM] force dcache flush if dcache_dirty bit set

[David Miller]

From: Russell King - ARM Linux <linux at arm.linux.org.uk>
Date: Mon, 12 Oct 2009 11:00:23 +0100

> The problem which has been identified is that when flush_dcache_page() is
> called, there is a mapping, and so the page is marked for lazy flushing.
> However, by the time update_mmu_cache() gets called, the mapping has gone
> and so update_mmu_cache() does nothing.

Now I understand, thanks.

Ok, I'll remove the mapping check from the sparc64 flush_dcache()
function, seems the right thing to do.