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yaml --- r: 164449 b: refs/heads/master c: ceddc3a h: refs/heads/master i: 164447: 2f36e9a v: v3
git-mirror · Sep 22, 2009 · 27f9875 · 27f9875
1 parent e8affc1
commit 27f9875
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Showing 2 changed files with 6 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: edcf4748cd56adcdf0856cc99ef108a4ea3ac7fe
+refs/heads/master: ceddc3a52d783fabbf1ba623601419b9d6337194
diff --git a/trunk/mm/vmscan.c b/trunk/mm/vmscan.c
@@ -286,6 +286,11 @@ static inline int page_mapping_inuse(struct page *page)
 
 static inline int is_page_cache_freeable(struct page *page)
 {
+	/*
+	 * A freeable page cache page is referenced only by the caller
+	 * that isolated the page, the page cache radix tree and
+	 * optional buffer heads at page->private.
+	 */
 	return page_count(page) - page_has_private(page) == 2;
 }