Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753684AbbD1Gug (ORCPT ); Tue, 28 Apr 2015 02:50:36 -0400 Received: from mail.kernel.org ([198.145.29.136]:39481 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753255AbbD1Gth (ORCPT ); Tue, 28 Apr 2015 02:49:37 -0400 From: Ming Lin To: linux-kernel@vger.kernel.org Cc: Christoph Hellwig , Jens Axboe , Kent Overstreet , Dongsu Park , Ming Lin , Christoph Hellwig , Neil Brown , linux-raid@vger.kernel.org Subject: [PATCH 09/10] md/raid10: make sync_request_write() call bio_copy_data() Date: Mon, 27 Apr 2015 23:48:36 -0700 Message-Id: <1430203717-13307-10-git-send-email-mlin@kernel.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1430203717-13307-1-git-send-email-mlin@kernel.org> References: <1430203717-13307-1-git-send-email-mlin@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2379 Lines: 70 From: Kent Overstreet Refactor sync_request_write() of md/raid10 to use bio_copy_data() instead of open coding bio_vec iterations. Cc: Christoph Hellwig Cc: Neil Brown Cc: linux-raid@vger.kernel.org Reviewed-by: Christoph Hellwig Acked-by: NeilBrown Signed-off-by: Kent Overstreet [dpark: add more description in commit message] Signed-off-by: Dongsu Park Signed-off-by: Ming Lin --- drivers/md/raid10.c | 18 ++++-------------- 1 file changed, 4 insertions(+), 14 deletions(-) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index a46c402..6ea6f5f 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1989,17 +1989,10 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio) tbio->bi_rw = WRITE; tbio->bi_private = r10_bio; tbio->bi_iter.bi_sector = r10_bio->devs[i].addr; - - for (j=0; j < vcnt ; j++) { - tbio->bi_io_vec[j].bv_offset = 0; - tbio->bi_io_vec[j].bv_len = PAGE_SIZE; - - memcpy(page_address(tbio->bi_io_vec[j].bv_page), - page_address(fbio->bi_io_vec[j].bv_page), - PAGE_SIZE); - } tbio->bi_end_io = end_sync_write; + bio_copy_data(tbio, fbio); + d = r10_bio->devs[i].devnum; atomic_inc(&conf->mirrors[d].rdev->nr_pending); atomic_inc(&r10_bio->remaining); @@ -2014,17 +2007,14 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio) * that are active */ for (i = 0; i < conf->copies; i++) { - int j, d; + int d; tbio = r10_bio->devs[i].repl_bio; if (!tbio || !tbio->bi_end_io) continue; if (r10_bio->devs[i].bio->bi_end_io != end_sync_write && r10_bio->devs[i].bio != fbio) - for (j = 0; j < vcnt; j++) - memcpy(page_address(tbio->bi_io_vec[j].bv_page), - page_address(fbio->bi_io_vec[j].bv_page), - PAGE_SIZE); + bio_copy_data(tbio, fbio); d = r10_bio->devs[i].devnum; atomic_inc(&r10_bio->remaining); md_sync_acct(conf->mirrors[d].replacement->bdev, -- 1.9.1 -- 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/