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=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,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 086E8C83000 for ; Wed, 29 Apr 2020 14:04:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DD31D2082E for ; Wed, 29 Apr 2020 14:04:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=android.com header.i=@android.com header.b="sxIzaHkm" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728084AbgD2ODw (ORCPT ); Wed, 29 Apr 2020 10:03:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57248 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1728007AbgD2ODu (ORCPT ); Wed, 29 Apr 2020 10:03:50 -0400 Received: from mail-wr1-x442.google.com (mail-wr1-x442.google.com [IPv6:2a00:1450:4864:20::442]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3B3FDC035493 for ; Wed, 29 Apr 2020 07:03:50 -0700 (PDT) Received: by mail-wr1-x442.google.com with SMTP id b11so2679616wrs.6 for ; Wed, 29 Apr 2020 07:03:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=android.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=GVQ6PJVYJ1ywRYR59x9OnKcPE1BH9cVkm73W4+2Zo6k=; b=sxIzaHkm4DJewXcHHF7Lc2rxcr6U2EwKWQsb+VKVC6R4KesLhY2vD/na6H4tlmOK9/ HxcXJwT29QU1jNUghkYucNmUY2JiggMgdeLUhyQSMqNk0lXMWefTquFcCzio0ljO05QS VbyRilWCdf3See6S1xwAgB0MuNwVQANodbrBSL/Vioj89L/zmYBBXAtjYsJfaW+TAMM6 sL9WVolxXpeRl9RlBoMR40192Y1xqH8jxANH73uCWshGc1+QJfMO+3OzWTYQldI1ZhU/ dbKHj3/iG9wHVlrZpJQeaGTZcQjx2bpBE4w4Xe70DOYT7pV6Kwpy3e3AJS7pCqtC50xm +Nmw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=GVQ6PJVYJ1ywRYR59x9OnKcPE1BH9cVkm73W4+2Zo6k=; b=UbGtdxgcwg6PlxEO6t3aEiFLanVn4Vq3N5QS2kRTZHvZyvzaS7Hu0UvCj7Gi6gFnuT rUjRm8DaajdC/sDBQbciOKofbYRN6D7IWFIHxWExhkEdp2veQHP8mI10qx1CJftnswkR 56MdIL0wMrLb6M+DIAuKPKM1f7nehEIjhmCZ86p+cr4XZ60CKgwZeOGJ8o+w2Nxkx2cE LEh9hSfbk9470+8LGI2AfvJo+oYcieLFnj5nPHpayLEJwlpwR33FvAa23Oj2ZAR1e7HS peN24Yfuw4XE6sn17zp2RW7YAwXkQ4o7cUfEY0MuUYQXaLyEjPEOytEZVU8LHl3DJosM ue9Q== X-Gm-Message-State: AGi0Pua7FAfqmqZ7TOlyzpPijIoVAEWZZhXi9zvMKuVhsIB6T2llwIRY b4LRltjhWFtBYxXMA6xpbJ0c+g== X-Google-Smtp-Source: APiQypLMl/5GOABd24RbSC64VM+meR4NKVn0FFgfHYJQTI/1/27Ydb0VqQiSLlmjgVmI1tyZTO4GKQ== X-Received: by 2002:a5d:498b:: with SMTP id r11mr39222128wrq.368.1588169028956; Wed, 29 Apr 2020 07:03:48 -0700 (PDT) Received: from maco2.ams.corp.google.com (a83-162-234-235.adsl.xs4all.nl. [83.162.234.235]) by smtp.gmail.com with ESMTPSA id d133sm8887008wmc.27.2020.04.29.07.03.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2020 07:03:48 -0700 (PDT) From: Martijn Coenen To: axboe@kernel.dk, hch@lst.de, ming.lei@redhat.com Cc: narayan@google.com, zezeozue@google.com, kernel-team@android.com, maco@google.com, bvanassche@acm.org, Chaitanya.Kulkarni@wdc.com, jaegeuk@kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, Martijn Coenen Subject: [PATCH v4 03/10] loop: Switch to set_capacity_revalidate_and_notify() Date: Wed, 29 Apr 2020 16:03:34 +0200 Message-Id: <20200429140341.13294-4-maco@android.com> X-Mailer: git-send-email 2.26.2.303.gf8c07b1a785-goog In-Reply-To: <20200429140341.13294-1-maco@android.com> References: <20200429140341.13294-1-maco@android.com> 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 was recently added to block/genhd.c, and takes care of both updating the capacity and notifying userspace of the new size. Signed-off-by: Martijn Coenen --- drivers/block/loop.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 6643e48ad71c..8f3194c2b8aa 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -253,10 +253,9 @@ static void loop_set_size(struct loop_device *lo, loff_t size) { struct block_device *bdev = lo->lo_device; - set_capacity(lo->lo_disk, size); bd_set_size(bdev, size << SECTOR_SHIFT); - /* let user-space know about the new size */ - kobject_uevent(&disk_to_dev(bdev->bd_disk)->kobj, KOBJ_CHANGE); + + set_capacity_revalidate_and_notify(lo->lo_disk, size, false); } static int -- 2.26.2.303.gf8c07b1a785-goog