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>

fs/ocfs2/acl.c

@@ -401,7 +401,7 @@ int ocfs2_init_acl(handle_t *handle,
 				goto cleanup;
 		}
 		mode = inode->i_mode;
-		ret = posix_acl_create(&acl, GFP_NOFS, &mode);
+		ret = __posix_acl_create(&acl, GFP_NOFS, &mode);
 		if (ret < 0)
 			return ret;