Needed to maintain cache coherency after branch management.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
---
 fs/drop_caches.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/fs/drop_caches.c b/fs/drop_caches.c
index 59375ef..90410ac 100644
--- a/fs/drop_caches.c
+++ b/fs/drop_caches.c
@@ -3,6 +3,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/module.h>
 #include <linux/mm.h>
 #include <linux/fs.h>
 #include <linux/writeback.h>
@@ -12,7 +13,7 @@
 /* A global variable is a bit ugly, but it keeps the code simple */
 int sysctl_drop_caches;
 
-static void drop_pagecache_sb(struct super_block *sb)
+void drop_pagecache_sb(struct super_block *sb)
 {
 	struct inode *inode;
 
@@ -24,6 +25,7 @@ static void drop_pagecache_sb(struct super_block *sb)
 	}
 	spin_unlock(&inode_lock);
 }
+EXPORT_SYMBOL(drop_pagecache_sb);
 
 void drop_pagecache(void)
 {
-- 
1.5.2.2

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