include/linux/cleancache.h: Clean up code

Let cleancache_fs_enabled() call cleancache_fs_enabled_mapping()
directly.

Remove redundant variable ret in cleancache_get_page().

Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

diff --git a/include/linux/cleancache.h b/include/linux/cleancache.h
index cb3e142..fccf7f4 100644 (file)
--- a/include/linux/cleancache.h
+++ b/include/linux/cleancache.h
@@ -48,14 +48,14 @@ extern void __cleancache_invalidate_fs(struct super_block *);
 
 #ifdef CONFIG_CLEANCACHE
 #define cleancache_enabled (1)
-static inline bool cleancache_fs_enabled(struct page *page)
-{
-       return page->mapping->host->i_sb->cleancache_poolid >= 0;
-}
 static inline bool cleancache_fs_enabled_mapping(struct address_space *mapping)
 {
        return mapping->host->i_sb->cleancache_poolid >= 0;
 }
+static inline bool cleancache_fs_enabled(struct page *page)
+{
+       return cleancache_fs_enabled_mapping(page->mapping);
+}
 #else
 #define cleancache_enabled (0)
 #define cleancache_fs_enabled(_page) (0)
@@ -89,11 +89,9 @@ static inline void cleancache_init_shared_fs(struct super_block *sb)
 
 static inline int cleancache_get_page(struct page *page)
 {
-       int ret = -1;
-
        if (cleancache_enabled && cleancache_fs_enabled(page))
-               ret = __cleancache_get_page(page);
-       return ret;
+               return __cleancache_get_page(page);
+       return -1;
 }
 
 static inline void cleancache_put_page(struct page *page)