From: Alexey Dobriyan <adobriyan@gmail.com>

If CONFIG_EXT2_FS_POSIX_ACL is not configured, ext2_clear_inode() will be
empty function.  However, there still will be call and immediate return
which can be avoided.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Joern Engel <joern@logfs.org>
Cc: Andreas Gruenbacher <agruen@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/ext2/super.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff -puN fs/ext2/super.c~faster-ext2_clear_inode fs/ext2/super.c
--- a/fs/ext2/super.c~faster-ext2_clear_inode
+++ a/fs/ext2/super.c
@@ -185,9 +185,9 @@ static void destroy_inodecache(void)
 	kmem_cache_destroy(ext2_inode_cachep);
 }
 
+#ifdef CONFIG_EXT2_FS_POSIX_ACL
 static void ext2_clear_inode(struct inode *inode)
 {
-#ifdef CONFIG_EXT2_FS_POSIX_ACL
 	struct ext2_inode_info *ei = EXT2_I(inode);
 
 	if (ei->i_acl && ei->i_acl != EXT2_ACL_NOT_CACHED) {
@@ -198,8 +198,10 @@ static void ext2_clear_inode(struct inod
 		posix_acl_release(ei->i_default_acl);
 		ei->i_default_acl = EXT2_ACL_NOT_CACHED;
 	}
-#endif
 }
+#else
+#define ext2_clear_inode NULL
+#endif
 
 static int ext2_show_options(struct seq_file *seq, struct vfsmount *vfs)
 {
_