fs: make posix_acl_create more useful

Rename the current posix_acl_created to __posix_acl_create and add
a fully featured helper to set up the ACLs on file creation that
uses get_acl().

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c
index ea4e443..d95c959 100644
--- a/fs/reiserfs/xattr_acl.c
+++ b/fs/reiserfs/xattr_acl.c
@@ -378,7 +378,7 @@
 
 		/* Now we reconcile the new ACL and the mode,
 		   potentially modifying both */
-		err = posix_acl_create(&acl, GFP_NOFS, &inode->i_mode);
+		err = __posix_acl_create(&acl, GFP_NOFS, &inode->i_mode);
 		if (err < 0)
 			return err;