Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754906AbaLDU0L (ORCPT ); Thu, 4 Dec 2014 15:26:11 -0500 Received: from zeniv.linux.org.uk ([195.92.253.2]:50301 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754759AbaLDUXU (ORCPT ); Thu, 4 Dec 2014 15:23:20 -0500 From: Al Viro To: Linus Torvalds Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, netdev@vger.kernel.org Subject: [RFC][PATCH 12/13] new helper: iov_iter_kvec() Date: Thu, 4 Dec 2014 20:23:16 +0000 Message-Id: <1417724597-17099-12-git-send-email-viro@ZenIV.linux.org.uk> X-Mailer: git-send-email 1.7.7.6 In-Reply-To: <20141204202011.GO29748@ZenIV.linux.org.uk> References: <20141204202011.GO29748@ZenIV.linux.org.uk> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Al Viro initialization of kvec-backed iov_iter Signed-off-by: Al Viro --- include/linux/uio.h | 2 ++ mm/iov_iter.c | 13 +++++++++++++ 2 files changed, 15 insertions(+) diff --git a/include/linux/uio.h b/include/linux/uio.h index 28ed2d9..c567655 100644 --- a/include/linux/uio.h +++ b/include/linux/uio.h @@ -87,6 +87,8 @@ size_t iov_iter_zero(size_t bytes, struct iov_iter *); unsigned long iov_iter_alignment(const struct iov_iter *i); void iov_iter_init(struct iov_iter *i, int direction, const struct iovec *iov, unsigned long nr_segs, size_t count); +void iov_iter_kvec(struct iov_iter *i, int direction, const struct kvec *iov, + unsigned long nr_segs, size_t count); ssize_t iov_iter_get_pages(struct iov_iter *i, struct page **pages, size_t maxsize, unsigned maxpages, size_t *start); ssize_t iov_iter_get_pages_alloc(struct iov_iter *i, struct page ***pages, diff --git a/mm/iov_iter.c b/mm/iov_iter.c index 5a3b4a8..7c04051 100644 --- a/mm/iov_iter.c +++ b/mm/iov_iter.c @@ -479,6 +479,19 @@ size_t iov_iter_single_seg_count(const struct iov_iter *i) } EXPORT_SYMBOL(iov_iter_single_seg_count); +void iov_iter_kvec(struct iov_iter *i, int direction, + const struct kvec *iov, unsigned long nr_segs, + size_t count) +{ + BUG_ON(!(direction & ITER_KVEC)); + i->type = direction; + i->kvec = (struct kvec *)iov; + i->nr_segs = nr_segs; + i->iov_offset = 0; + i->count = count; +} +EXPORT_SYMBOL(iov_iter_kvec); + unsigned long iov_iter_alignment(const struct iov_iter *i) { unsigned long res = 0; -- 2.1.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/