From: Rafael J. Wysocki <rjw@sisk.pl>
Date: Sun, 7 Dec 2008 23:52:49 +0000 (+0100)
Subject: Hibernate: Replace unnecessary evaluation of pfn_to_page()
X-Git-Tag: firefly_0821_release~15934^2~3^2~1
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=baa5835df10254762aedb6cb23a9c1508f969736;p=firefly-linux-kernel-4.4.55.git

Hibernate: Replace unnecessary evaluation of pfn_to_page()

Replace one evaluation of pfn_to_page() in copy_data_pages() with
the value of a local variable containing the right number already.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Len Brown <len.brown@intel.com>
---

diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index ec9f153b2fc2..f5fc2d7680f2 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -981,7 +981,7 @@ static void copy_data_page(unsigned long dst_pfn, unsigned long src_pfn)
 			 * data modified by kmap_atomic()
 			 */
 			safe_copy_page(buffer, s_page);
-			dst = kmap_atomic(pfn_to_page(dst_pfn), KM_USER0);
+			dst = kmap_atomic(d_page, KM_USER0);
 			memcpy(dst, buffer, PAGE_SIZE);
 			kunmap_atomic(dst, KM_USER0);
 		} else {