Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754765AbaLVLue (ORCPT ); Mon, 22 Dec 2014 06:50:34 -0500 Received: from mail-wg0-f52.google.com ([74.125.82.52]:35371 "EHLO mail-wg0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754741AbaLVLua (ORCPT ); Mon, 22 Dec 2014 06:50:30 -0500 From: Dongsu Park To: linux-kernel@vger.kernel.org Cc: Jens Axboe , Kent Overstreet , Ming Lin , Dongsu Park , Neil Brown , linux-raid@vger.kernel.org Subject: [RFC PATCH 12/17] md/raid10: make sync_request_write() call bio_copy_data() Date: Mon, 22 Dec 2014 12:48:39 +0100 Message-Id: X-Mailer: git-send-email 2.1.0 In-Reply-To: References: <83a9ee8a309f8e08490c5dd715a608ea054f5c33.1419241597.git.dongsu.park@profitbricks.com> <0b6ba533a64aec98e8447bfd30c6622d0729d12e.1419241597.git.dongsu.park@profitbricks.com> <4334b90a56b96ad7a11e4ba7eb97c2cf4405950d.1419241597.git.dongsu.park@profitbricks.com> In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kent Overstreet Refactor sync_request_write() of md/raid10 to use bio_copy_data() instead of open coding bio_vec iterations. Signed-off-by: Kent Overstreet [dpark: add more description in commit message] Signed-off-by: Dongsu Park Cc: Neil Brown Cc: linux-raid@vger.kernel.org --- drivers/md/raid10.c | 20 +++++--------------- 1 file changed, 5 insertions(+), 15 deletions(-) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 32e282f..4a40354 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -2107,18 +2107,11 @@ static void sync_request_write(struct mddev *mddev, struct r10bio *r10_bio) tbio->bi_vcnt = vcnt; tbio->bi_iter.bi_size = r10_bio->sectors << 9; 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; + tbio->bi_private = r10_bio; + + bio_copy_data(tbio, fbio); d = r10_bio->devs[i].devnum; atomic_inc(&conf->mirrors[d].rdev->nr_pending); @@ -2134,17 +2127,14 @@ 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, -- 2.1.0 -- 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/