From: Sasha Levin <levinsasha928@gmail.com>
Date: Sun, 10 Jun 2012 10:51:07 +0000 (+0200)
Subject: mm: frontswap: split out function to clear a page out
X-Git-Tag: v3.12-rc1~2704^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=611edfed29f406eedf66030e0864b7d3fec23f21;p=kernel%2Fkernel-generic.git

mm: frontswap: split out function to clear a page out

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---

diff --git a/mm/frontswap.c b/mm/frontswap.c
index 7c26e89..7fb9538 100644
--- a/mm/frontswap.c
+++ b/mm/frontswap.c
@@ -114,6 +114,12 @@ void __frontswap_init(unsigned type)
 }
 EXPORT_SYMBOL(__frontswap_init);
 
+static inline void __frontswap_clear(struct swap_info_struct *sis, pgoff_t offset)
+{
+	frontswap_clear(sis, offset);
+	atomic_dec(&sis->frontswap_pages);
+}
+
 /*
  * "Store" data from a page to frontswap and associate it with the page's
  * swaptype and offset.  Page must be locked and in the swap cache.
@@ -145,10 +151,8 @@ int __frontswap_store(struct page *page)
 		  the (older) page from frontswap
 		 */
 		inc_frontswap_failed_stores();
-		if (dup) {
-			frontswap_clear(sis, offset);
-			atomic_dec(&sis->frontswap_pages);
-		}
+		if (dup)
+			__frontswap_clear(sis, offset);
 	}
 	if (frontswap_writethrough_enabled)
 		/* report failure so swap also writes to swap device */
@@ -191,8 +195,7 @@ void __frontswap_invalidate_page(unsigned type, pgoff_t offset)
 	BUG_ON(sis == NULL);
 	if (frontswap_test(sis, offset)) {
 		frontswap_ops.invalidate_page(type, offset);
-		atomic_dec(&sis->frontswap_pages);
-		frontswap_clear(sis, offset);
+		__frontswap_clear(sis, offset);
 		inc_frontswap_invalidates();
 	}
 }