From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Thu, 24 Jun 2021 06:32:15 +0000 (+0800)
Subject: crypto: scatterwalk - Remove obsolete PageSlab check
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b0d2193ba643ec8246e7a194e336c71018b8e6f3;p=linux.git

crypto: scatterwalk - Remove obsolete PageSlab check

As it is now legal to call flush_dcache_page on slab pages we
no longer need to do the check in the Crypto API.

Reported-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/include/crypto/scatterwalk.h b/include/crypto/scatterwalk.h
index c837d07754741..7af08174a7212 100644
--- a/include/crypto/scatterwalk.h
+++ b/include/crypto/scatterwalk.h
@@ -81,12 +81,7 @@ static inline void scatterwalk_pagedone(struct scatter_walk *walk, int out,
 		struct page *page;
 
 		page = sg_page(walk->sg) + ((walk->offset - 1) >> PAGE_SHIFT);
-		/* Test ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE first as
-		 * PageSlab cannot be optimised away per se due to
-		 * use of volatile pointer.
-		 */
-		if (ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE && !PageSlab(page))
-			flush_dcache_page(page);
+		flush_dcache_page(page);
 	}
 
 	if (more && walk->offset >= walk->sg->offset + walk->sg->length)