linux-kernel - [PATCH 11/15] cleancache: Remove the check for cleancache

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Date:	Fri,  1 Feb 2013 15:23:00 -0500
From:	Konrad Rzeszutek Wilk <konrad@...nel.org>
To:	dan.magenheimer@...cle.com, konrad.wilk@...cle.com,
	sjenning@...ux.vnet.ibm.com, gregkh@...uxfoundation.org,
	akpm@...ux-foundation.org, ngupta@...are.org,
	rcj@...ux.vnet.ibm.com, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org
Subject: [PATCH 11/15] cleancache: Remove the check for cleancache_enabled.

With the support for loading of backends as modules, the
cleancache_enabled is always set to true. The next subsequent patches
are going to convert the cleancache_enabled to be a bit more selective
and be on/off depending on whether the backend has registered - and not
whether the cleancache API is enabled.

The three functions: cleancache_init_[shared|]fs and
cleancache_invalidate_fs can be called anytime - they queue up which
of the filesystems are active and can use the cleancache API - and when
the backend is registered they will know which filesystem to
process.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
---
 include/linux/cleancache.h | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/include/linux/cleancache.h b/include/linux/cleancache.h
index 3af5ea8..dfa1ccb 100644
--- a/include/linux/cleancache.h
+++ b/include/linux/cleancache.h
@@ -74,14 +74,12 @@ static inline bool cleancache_fs_enabled_mapping(struct address_space *mapping)
 
 static inline void cleancache_init_fs(struct super_block *sb)
 {
-	if (cleancache_enabled)
-		__cleancache_init_fs(sb);
+	__cleancache_init_fs(sb);
 }
 
 static inline void cleancache_init_shared_fs(char *uuid, struct super_block *sb)
 {
-	if (cleancache_enabled)
-		__cleancache_init_shared_fs(uuid, sb);
+	__cleancache_init_shared_fs(uuid, sb);
 }
 
 static inline int cleancache_get_page(struct page *page)
@@ -115,8 +113,7 @@ static inline void cleancache_invalidate_inode(struct address_space *mapping)
 
 static inline void cleancache_invalidate_fs(struct super_block *sb)
 {
-	if (cleancache_enabled)
-		__cleancache_invalidate_fs(sb);
+	__cleancache_invalidate_fs(sb);
 }
 
 #endif /* _LINUX_CLEANCACHE_H */
-- 
1.7.11.7

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