Commit 4f3e797a authored Feb 09, 2009 by Herbert Xu

crypto: scatterwalk - Avoid flush_dcache_page on slab pages



It's illegal to call flush_dcache_page on slab pages on a number
of architectures.  So this patch avoids doing so if PageSlab is
true.

In future we can move the flush_dcache_page call to those page
cache users that actually need it.

Reported-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

parent 412e87ae

crypto/scatterwalk.c

+2 −1

Original line number	Original line	Diff line number	Diff line
	@@ -54,6 +54,7 @@ static void scatterwalk_pagedone(struct scatter_walk *walk, int out,
	struct page *page;		struct page *page;

	page = sg_page(walk->sg) + ((walk->offset - 1) >> PAGE_SHIFT);		page = sg_page(walk->sg) + ((walk->offset - 1) >> PAGE_SHIFT);
			if (!PageSlab(page))
	flush_dcache_page(page);		flush_dcache_page(page);
	}		}