From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C1929C43387 for ; Tue, 18 Dec 2018 17:25:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8C92E218A4 for ; Tue, 18 Dec 2018 17:25:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1545153944; bh=loy0paVawQwjHFRQsEUvd8ZqIAGPlkera54Y5/bM1XA=; h=From:To:Cc:Subject:Date:List-ID:From; b=xcyqvkYVG7gvLLZMlchWL5cOnSWuBTNLAmvvjYPBBjwp3lEf9ND9Ikt80F9aqds+B 58reRgRYKi/kZQKrA9N8GKOHCk/Zish5VH2gdJiBciKxXpKF/uqDeTNo+kUnba0iDQ A+71B5p/7R8kBgTSPKdDtLFMz6ids3O8NOswRrWw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727343AbeLRRZn (ORCPT ); Tue, 18 Dec 2018 12:25:43 -0500 Received: from mail.kernel.org ([198.145.29.99]:34706 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727283AbeLRRZk (ORCPT ); Tue, 18 Dec 2018 12:25:40 -0500 Received: from localhost (unknown [104.132.0.77]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 58858218A3; Tue, 18 Dec 2018 17:25:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1545153940; bh=loy0paVawQwjHFRQsEUvd8ZqIAGPlkera54Y5/bM1XA=; h=From:To:Cc:Subject:Date:From; b=tu7UZ4zijEZM+rWzwswqX7EHz6NG8rkoAsf0Jis9GQym910OzghrXDpjJLACyT1jK j60jr+CH7r7np7w+DyUyQ7ojTGELi3TkzW4TFuUk1sorfxkeo2fn/DUsRjc8Nqz8tZ JSZlaQvF336JZBa7WekyKNs22zseH49JvMjL4yH8= From: Jaegeuk Kim To: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Cc: Jaegeuk Kim , stable@vger.kernel.org, Jens Axboe , Alasdair Kergon , Mike Snitzer , dm-devel@redhat.com Subject: [PATCH] dm: give req_size precisely given by user Date: Tue, 18 Dec 2018 09:25:37 -0800 Message-Id: <20181218172537.12300-1-jaegeuk@kernel.org> X-Mailer: git-send-email 2.19.0.605.g01d371f741-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch makes dm be aware of io_pages to assign sane req_size for reads. Cc: stable@vger.kernel.org Cc: Jens Axboe Cc: Alasdair Kergon Cc: Mike Snitzer Cc: dm-devel@redhat.com Fixes: 9491ae4a ("mm: don't cap request size based on read-ahead setting") Signed-off-by: Jaegeuk Kim --- drivers/md/dm-table.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 9038c302d5c2..886790428241 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -1927,6 +1927,9 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, */ if (blk_queue_is_zoned(q)) blk_revalidate_disk_zones(t->md->disk); + + /* io_pages is used for readahead */ + q->backing_dev_info->io_pages = limits->max_sectors >> (PAGE_SHIFT - 9); } unsigned int dm_table_get_num_targets(struct dm_table *t) -- 2.19.0.605.g01d371f741-goog