From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754154AbbCQVEn (ORCPT ); Tue, 17 Mar 2015 17:04:43 -0400 Received: from mail-pd0-f180.google.com ([209.85.192.180]:34322 "EHLO mail-pd0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752852AbbCQVEl (ORCPT ); Tue, 17 Mar 2015 17:04:41 -0400 From: Omar Sandoval To: Al Viro , David Sterba Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Omar Sandoval Subject: [RFC PATCH v3 1/5] new helper: iov_iter_rw() Date: Tue, 17 Mar 2015 14:04:02 -0700 Message-Id: X-Mailer: git-send-email 2.3.3 In-Reply-To: <20150317181910.GK29656@ZenIV.linux.org.uk> References: <20150317181910.GK29656@ZenIV.linux.org.uk> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Get either READ or WRITE out of iter->type. Signed-off-by: Omar Sandoval --- Ok, let's do that, then. include/linux/uio.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/uio.h b/include/linux/uio.h index 7188029..71889c9 100644 --- a/include/linux/uio.h +++ b/include/linux/uio.h @@ -111,6 +111,14 @@ static inline bool iter_is_iovec(struct iov_iter *i) } /* + * Get one of READ or WRITE out of iter->type without any other flags OR'd in + * with it. + * + * The ?: is just for type safety. + */ +#define iov_iter_rw(i) ((0 ? (struct iov_iter *)0 : (i))->type & RW_MASK) + +/* * Cap the iov_iter by given limit; note that the second argument is * *not* the new size - it's upper limit for such. Passing it a value * greater than the amount of data in iov_iter is fine - it'll just do -- 2.3.3