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smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=pass smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.163.216]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTP id 4Zwhms3h2hz4f3jXm; Mon, 12 May 2025 09:27:41 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id 2F6551A1BA8; Mon, 12 May 2025 09:28:06 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP4 (Coremail) with SMTP id gCh0CgCnC2CdTiFoNFCWMA--.55093S11; Mon, 12 May 2025 09:28:05 +0800 (CST) From: Yu Kuai To: hch@lst.de, xni@redhat.com, colyli@kernel.org, agk@redhat.com, snitzer@kernel.org, mpatocka@redhat.com, song@kernel.org, yukuai3@huawei.com Cc: linux-kernel@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, yukuai1@huaweicloud.com, yi.zhang@huawei.com, yangerkun@huawei.com, johnny.chenyi@huawei.com Subject: [PATCH RFC md-6.16 v3 07/19] md/md-bitmap: add a new helper skip_sync_blocks() in bitmap_operations Date: Mon, 12 May 2025 09:19:15 +0800 Message-Id: <20250512011927.2809400-8-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20250512011927.2809400-1-yukuai1@huaweicloud.com> References: <20250512011927.2809400-1-yukuai1@huaweicloud.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: gCh0CgCnC2CdTiFoNFCWMA--.55093S11 X-Coremail-Antispam: 1UD129KBjvJXoW7Ar43Xw48CrW5WF1ftw4Dtwb_yoW8AFy3pa 97JFy3C3yUZrWYq3W7Ja4Dua4Fq34ktr9rtry7u34rur93GrnrGF45WayjqFyDGF1fAFsx Z3W5J3y5ZF1Iqr7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUmS14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JF0E3s1l82xGYI kIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2 z4x0Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F 4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq 3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7 IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4U M4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2 kIc2xKxwCY1x0262kKe7AKxVWUtVW8ZwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkE bVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67 AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUCVW8JwCI 42IY6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF 4lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVW8Jr0_Cr1UYxBI daVFxhVjvjDU0xZFpf9x0JUQFxUUUUUU= X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ Content-Type: text/plain; charset="utf-8" From: Yu Kuai This helper is used to check if blocks can be skipped before calling into pers->sync_request(), llbiltmap will use this helper to skip resync for unwritten/clean data blocks, and recovery/check/repair for unwritten data blocks; Signed-off-by: Yu Kuai Reviewed-by: Christoph Hellwig --- drivers/md/md-bitmap.h | 1 + drivers/md/md.c | 7 +++++++ 2 files changed, 8 insertions(+) diff --git a/drivers/md/md-bitmap.h b/drivers/md/md-bitmap.h index 41d09c6d0c14..13be2a10801a 100644 --- a/drivers/md/md-bitmap.h +++ b/drivers/md/md-bitmap.h @@ -99,6 +99,7 @@ struct bitmap_operations { void (*end_discard)(struct mddev *mddev, sector_t offset, unsigned long sectors); =20 + sector_t (*skip_sync_blocks)(struct mddev *mddev, sector_t offset); bool (*start_sync)(struct mddev *mddev, sector_t offset, sector_t *blocks, bool degraded); void (*end_sync)(struct mddev *mddev, sector_t offset, sector_t *blocks); diff --git a/drivers/md/md.c b/drivers/md/md.c index 4329ecfbe8ff..c23ee9c19cf9 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -9370,6 +9370,12 @@ void md_do_sync(struct md_thread *thread) if (test_bit(MD_RECOVERY_INTR, &mddev->recovery)) break; =20 + if (mddev->bitmap_ops && mddev->bitmap_ops->skip_sync_blocks) { + sectors =3D mddev->bitmap_ops->skip_sync_blocks(mddev, j); + if (sectors) + goto update; + } + sectors =3D mddev->pers->sync_request(mddev, j, max_sectors, &skipped); if (sectors =3D=3D 0) { @@ -9385,6 +9391,7 @@ void md_do_sync(struct md_thread *thread) if (test_bit(MD_RECOVERY_INTR, &mddev->recovery)) break; =20 +update: j +=3D sectors; if (j > max_sectors) /* when skipping, extra large numbers can be returned. */ --=20 2.39.2