From mboxrd@z Thu Jan 1 00:00:00 1970 From: catalin.marinas@arm.com (Catalin Marinas) Date: Tue, 31 Aug 2010 14:58:06 +0100 Subject: [PATCH 1/9] ARM: Allow lazy cache flushing via PG_arch_1 for highmem pages In-Reply-To: <20100831135435.21304.38960.stgit@e102109-lin.cambridge.arm.com> References: <20100831135435.21304.38960.stgit@e102109-lin.cambridge.arm.com> Message-ID: <20100831135800.21304.31374.stgit@e102109-lin.cambridge.arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Commit d73cd42 forced non-lazy cache flushing of highmem pages in flush_dcache_page(). This isn't needed since __flush_dcache_page() (called lazily from update_mmu_cache) can handle highmem pages (fixed by commit 7e5a69e). Signed-off-by: Catalin Marinas Acked-by: Nicolas Pitre --- arch/arm/mm/flush.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c index c6844cb..87dd5ff 100644 --- a/arch/arm/mm/flush.c +++ b/arch/arm/mm/flush.c @@ -247,7 +247,7 @@ void flush_dcache_page(struct page *page) mapping = page_mapping(page); #ifndef CONFIG_SMP - if (!PageHighMem(page) && mapping && !mapping_mapped(mapping)) + if (mapping && !mapping_mapped(mapping)) set_bit(PG_dcache_dirty, &page->flags); else #endif