From patchwork Sat Aug 10 02:08:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yu Kuai X-Patchwork-Id: 13759334 Received: from dggsgout11.his.huawei.com (dggsgout11.his.huawei.com [45.249.212.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3EBA627452; Sat, 10 Aug 2024 02:12:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.51 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723255978; cv=none; b=KP/Hd+DcMVv97mTyAxBKHuIcBPPr7Wfg/C5AtVIIfHe7ufPYzsuEJ6UwnLmoZh4xsolXea0Dwj84FdW38uPIQsq1m804goxZxHRoGTFr7eUx/+v9c/OcB2vEtMmzcGnr8Zze4fEyuvUb+cILviZeQHJ67DmyRqLnlHjH+FHIcAA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723255978; c=relaxed/simple; bh=SR5ipG1SbKiZvkaVsKyWLmS9oRY42Cz5uykzVSnlZl4=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=V92s0jvI45a07lXwcwwaKTsXiCNKGqG0UR/AJ8/VI1M7WQRmPwl/iz6cmvdGBcQ8c9rVAeTa60d0+QJ968YT55OPxRKvpHbrb+fhh8+foyvyUn31ma82nk2PVcm0f/pU105VyhOhF+jKMqmGb/qiyLjZfxyuz2da9RMItGyU9OM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=none smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.51 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.93.142]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4Wgknl5Zpkz4f3jk1; Sat, 10 Aug 2024 10:12:43 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id E361B1A07B6; Sat, 10 Aug 2024 10:12:52 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP4 (Coremail) with SMTP id gCh0CgAHL4WizLZmErwLBQ--.1937S5; Sat, 10 Aug 2024 10:12:52 +0800 (CST) From: Yu Kuai To: song@kernel.org 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 RFC -next 01/26] md/md-bitmap: introduce struct bitmap_operations Date: Sat, 10 Aug 2024 10:08:29 +0800 Message-Id: <20240810020854.797814-2-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240810020854.797814-1-yukuai1@huaweicloud.com> References: <20240810020854.797814-1-yukuai1@huaweicloud.com> Precedence: bulk X-Mailing-List: linux-raid@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: gCh0CgAHL4WizLZmErwLBQ--.1937S5 X-Coremail-Antispam: 1UD129KBjvJXoW7CFW5CF4kAF4UuFyUAr17Awb_yoW8trW7pF Z3X34fAw15Jr4UXw1UXayDuFyrX3Z7trZrKrWxCw4ruFyDXF9xGF4rGFWqyw1DWF43AFnx Xw15KryUur18Xr7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUBl14x267AKxVW5JVWrJwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_Jr4l82xGYIkIc2 x26xkF7I0E14v26r1I6r4UM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0 Y4vE2Ix0cI8IcVAFwI0_Xr0_Ar1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Cr0_Gr1UM2 8EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s0DM2AI xVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xIIjxv20x vE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xv r2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7MxkF7I0En4kS14v26r126r1DMx AIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_ Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUAVWUtwCIc40Y0x0EwI xGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AKxVW8JVWx JwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcV C2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7VUjX18JUUUUU== X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ From: Yu Kuai The structure is empty for now, and will be used in later patches to merge in bitmap operations, prepare to implement a new lock free bitmap in the fulture. Signed-off-by: Yu Kuai --- drivers/md/md-bitmap.c | 8 ++++++++ drivers/md/md-bitmap.h | 4 ++++ drivers/md/md.c | 1 + drivers/md/md.h | 1 + 4 files changed, 14 insertions(+) diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c index 08232d8dc815..d9838fbcc9d7 100644 --- a/drivers/md/md-bitmap.c +++ b/drivers/md/md-bitmap.c @@ -2707,3 +2707,11 @@ const struct attribute_group md_bitmap_group = { .name = "bitmap", .attrs = md_bitmap_attrs, }; + +static struct bitmap_operations bitmap_ops = { +}; + +void mddev_set_bitmap_ops(struct mddev *mddev) +{ + mddev->bitmap_ops = &bitmap_ops; +} diff --git a/drivers/md/md-bitmap.h b/drivers/md/md-bitmap.h index bb9eb418780a..992feaf66d47 100644 --- a/drivers/md/md-bitmap.h +++ b/drivers/md/md-bitmap.h @@ -234,7 +234,11 @@ struct bitmap { int cluster_slot; /* Slot offset for clustered env */ }; +struct bitmap_operations { +}; + /* the bitmap API */ +void mddev_set_bitmap_ops(struct mddev *mddev); /* these are used only by md/bitmap */ struct bitmap *md_bitmap_create(struct mddev *mddev, int slot); diff --git a/drivers/md/md.c b/drivers/md/md.c index d3a837506a36..f23138dd96a7 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -772,6 +772,7 @@ int mddev_init(struct mddev *mddev) mddev->resync_min = 0; mddev->resync_max = MaxSector; mddev->level = LEVEL_NONE; + mddev_set_bitmap_ops(mddev); INIT_WORK(&mddev->sync_work, md_start_sync); INIT_WORK(&mddev->del_work, mddev_delayed_delete); diff --git a/drivers/md/md.h b/drivers/md/md.h index a0d6827dced9..e56193f71ab4 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -536,6 +536,7 @@ struct mddev { int sync_checkers; /* # of threads checking writes_pending */ struct bitmap *bitmap; /* the bitmap for the device */ + struct bitmap_operations *bitmap_ops; struct { struct file *file; /* the bitmap file */ loff_t offset; /* offset from superblock of