From nobody Wed Feb 11 00:56:17 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 286DEEE49B8 for ; Fri, 25 Aug 2023 03:15:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237892AbjHYDOv (ORCPT ); Thu, 24 Aug 2023 23:14:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47692 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234593AbjHYDOT (ORCPT ); Thu, 24 Aug 2023 23:14:19 -0400 Received: from dggsgout11.his.huawei.com (unknown [45.249.212.51]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E7D241997; Thu, 24 Aug 2023 20:14:16 -0700 (PDT) Received: from mail02.huawei.com (unknown [172.30.67.169]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4RX4mj4d6fz4f3kq3; Fri, 25 Aug 2023 11:14:13 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP4 (Coremail) with SMTP id gCh0CgAnBah_HOhkveEWBg--.3212S9; Fri, 25 Aug 2023 11:14:14 +0800 (CST) From: Yu Kuai To: agk@redhat.com, snitzer@kernel.org, dm-devel@redhat.com, song@kernel.org, xni@redhat.com Cc: linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, yukuai3@huawei.com, yukuai1@huaweicloud.com, yi.zhang@huawei.com, yangerkun@huawei.com Subject: [PATCH -next v2 5/7] md-bitmap: suspend array earlier in location_store() Date: Fri, 25 Aug 2023 11:09:54 +0800 Message-Id: <20230825030956.1527023-6-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230825030956.1527023-1-yukuai1@huaweicloud.com> References: <20230825030956.1527023-1-yukuai1@huaweicloud.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: gCh0CgAnBah_HOhkveEWBg--.3212S9 X-Coremail-Antispam: 1UD129KBjvJXoW7Kry7KFW7KrWUAr1kJrWkWFg_yoW5Jr48pa n3ta4rtr1rXFW3Xr17t3yv9FyrWw4kKrZrtrWxWwn5G3ZaywnxWF4rWF15J348K34rAFs8 Jw45JF18Gr1UWFJanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUPY14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Cr1j6r xdM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s0D M2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xIIjx v20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr0_Gr1l F7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7M4IIrI8v6xkF7I0E8cxan2 IY04v7MxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAF wI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUtVW8ZwCIc4 0Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1I6r4UMIIF0xvE2Ix0cI8IcVCY1x0267AK xVWxJVW8Jr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r 4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x0JUQSdkU UUUU= X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Yu Kuai Now that mddev_suspend() doean't rely on 'mddev->pers' to be set, it's safe to call mddev_suspend() earlier. This will also be helper to refactor mddev_suspend() later. Signed-off-by: Yu Kuai --- drivers/md/md-bitmap.c | 43 ++++++++++++++++++++---------------------- 1 file changed, 20 insertions(+), 23 deletions(-) diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c index f38c7f3156cb..0c661e5036bb 100644 --- a/drivers/md/md-bitmap.c +++ b/drivers/md/md-bitmap.c @@ -2351,6 +2351,8 @@ location_store(struct mddev *mddev, const char *buf, = size_t len) rv =3D mddev_lock(mddev); if (rv) return rv; + + mddev_suspend(mddev); if (mddev->pers) { if (mddev->recovery || mddev->sync_thread) { rv =3D -EBUSY; @@ -2365,11 +2367,8 @@ location_store(struct mddev *mddev, const char *buf,= size_t len) rv =3D -EBUSY; goto out; } - if (mddev->pers) { - mddev_suspend(mddev); - md_bitmap_destroy(mddev); - mddev_resume(mddev); - } + + md_bitmap_destroy(mddev); mddev->bitmap_info.offset =3D 0; if (mddev->bitmap_info.file) { struct file *f =3D mddev->bitmap_info.file; @@ -2379,6 +2378,8 @@ location_store(struct mddev *mddev, const char *buf, = size_t len) } else { /* No bitmap, OK to set a location */ long long offset; + struct bitmap *bitmap; + if (strncmp(buf, "none", 4) =3D=3D 0) /* nothing to be done */; else if (strncmp(buf, "file:", 5) =3D=3D 0) { @@ -2402,25 +2403,20 @@ location_store(struct mddev *mddev, const char *buf= , size_t len) rv =3D -EINVAL; goto out; } + mddev->bitmap_info.offset =3D offset; - if (mddev->pers) { - struct bitmap *bitmap; - bitmap =3D md_bitmap_create(mddev, -1); - mddev_suspend(mddev); - if (IS_ERR(bitmap)) - rv =3D PTR_ERR(bitmap); - else { - mddev->bitmap =3D bitmap; - rv =3D md_bitmap_load(mddev); - if (rv) - mddev->bitmap_info.offset =3D 0; - } - if (rv) { - md_bitmap_destroy(mddev); - mddev_resume(mddev); - goto out; - } - mddev_resume(mddev); + bitmap =3D md_bitmap_create(mddev, -1); + if (IS_ERR(bitmap)) { + rv =3D PTR_ERR(bitmap); + goto out; + } + + mddev->bitmap =3D bitmap; + rv =3D md_bitmap_load(mddev); + if (rv) { + mddev->bitmap_info.offset =3D 0; + md_bitmap_destroy(mddev); + goto out; } } } @@ -2433,6 +2429,7 @@ location_store(struct mddev *mddev, const char *buf, = size_t len) } rv =3D 0; out: + mddev_resume(mddev); mddev_unlock(mddev); if (rv) return rv; --=20 2.39.2