From patchwork Sun Jul 26 15:03:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11685813 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 61A3B6C1 for ; Sun, 26 Jul 2020 15:04:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4ADF120773 for ; Sun, 26 Jul 2020 15:04:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="YxnU7xEC" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726861AbgGZPDx (ORCPT ); Sun, 26 Jul 2020 11:03:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47330 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726835AbgGZPDw (ORCPT ); Sun, 26 Jul 2020 11:03:52 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CAE2CC0619D4; Sun, 26 Jul 2020 08:03:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=SQdEEUbS15XfNOnvBJj0vCvV6+m0XV9g2xcYAZ+hMD4=; b=YxnU7xECKgDZ4LqJfdWMsIcxEA yCfUcE3gTRygR1OvjtYJrDU3Bz1paMjy6nh9aMctdrc9x02/AF0mTDzlfwRI/UIdNsA0DGuyhGxG+ awRyoFbpxtSm3feI5LlsKLA8kZcUNh15jh+lTmOEMsJcmDjBTMdOr7ZbCZMeoWcRgcrxsl4VbVdnw yyrL6nGsYfdC8zf3Xt7LFsoZCMj5AvtvctzOQxWqy3xwMuxs8ssFmU8lyS8xkNG0dKqBf08p7UVI1 Cwf8EsgAfBAuY5/yvO+nJBZFfQrdydTuhw8kfer1VpDvEBbb2fuSox1nVc5xOWmW8Tk2knXuA9jg3 GH9QgDZQ==; Received: from [2001:4bb8:18c:2acc:2375:88ff:9f84:118d] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jziBd-0005f2-79; Sun, 26 Jul 2020 15:03:37 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Song Liu , Hans de Goede , Richard Weinberger , Minchan Kim , linux-mtd@lists.infradead.org, dm-devel@redhat.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, drbd-dev@lists.linbit.com, linux-raid@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org, Johannes Thumshirn Subject: [PATCH 01/14] fs: remove the unused SB_I_MULTIROOT flag Date: Sun, 26 Jul 2020 17:03:20 +0200 Message-Id: <20200726150333.305527-2-hch@lst.de> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200726150333.305527-1-hch@lst.de> References: <20200726150333.305527-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org The last user of SB_I_MULTIROOT is disappeared with commit f2aedb713c28 ("NFS: Add fs_context support.") Signed-off-by: Christoph Hellwig Reviewed-by: Johannes Thumshirn --- fs/namei.c | 4 ++-- include/linux/fs.h | 1 - 2 files changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/namei.c b/fs/namei.c index 72d4219c93acb7..e9ff0d54a110a7 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -568,8 +568,8 @@ static bool path_connected(struct vfsmount *mnt, struct dentry *dentry) { struct super_block *sb = mnt->mnt_sb; - /* Bind mounts and multi-root filesystems can have disconnected paths */ - if (!(sb->s_iflags & SB_I_MULTIROOT) && (mnt->mnt_root == sb->s_root)) + /* Bind mounts can have disconnected paths */ + if (mnt->mnt_root == sb->s_root) return true; return is_subdir(dentry, mnt->mnt_root); diff --git a/include/linux/fs.h b/include/linux/fs.h index 41cd993ec0f686..236543605dd118 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1366,7 +1366,6 @@ extern int send_sigurg(struct fown_struct *fown); #define SB_I_CGROUPWB 0x00000001 /* cgroup-aware writeback enabled */ #define SB_I_NOEXEC 0x00000002 /* Ignore executables on this fs */ #define SB_I_NODEV 0x00000004 /* Ignore devices on this fs */ -#define SB_I_MULTIROOT 0x00000008 /* Multiple roots to the dentry tree */ /* sb->s_iflags to limit user namespace mounts */ #define SB_I_USERNS_VISIBLE 0x00000010 /* fstype already mounted */ From patchwork Sun Jul 26 15:03:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11685829 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 978271392 for ; Sun, 26 Jul 2020 15:05:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 72CB620714 for ; Sun, 26 Jul 2020 15:05:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="nzfTTc0U" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726731AbgGZPDt (ORCPT ); Sun, 26 Jul 2020 11:03:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47318 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725978AbgGZPDt (ORCPT ); Sun, 26 Jul 2020 11:03:49 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EABB8C0619D2; Sun, 26 Jul 2020 08:03:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=7sLr773opB4TCq8qFsHUwDVwSWroJwloCS8BnU42JTo=; b=nzfTTc0USVN6e4AgohXkVVBtnB ao8yENWY5PaMchxhF88PqoEDZtsOvvDBfsVqL5hxXs1TfPKZsT0QKdC04koNuyIqUVWff6t7WpMsO 6ROQmy7Z3SuqIBiB5MY/GlauBE2dCXtfkRYHkWeVcikSjYbCzVU2/9edWtltJgwhQPO8y9ky/Xq/n Dq60znZ4ygSsHIMpgg0I35t1JLX8qrL50CEXCilpvkDH9ZQuY5bE4HRktCNPrXIuHlRbKpJ2f0ipn dC9zHgaHUxCnVaVQ4ZdLhkeU0PuMsURYlqj8BSpk8D6OEOUCXOpRijEYlhL5KzDLJWB3Oi9DhpYgb NRdWrmvQ==; Received: from [2001:4bb8:18c:2acc:2375:88ff:9f84:118d] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jziBe-0005fc-UA; Sun, 26 Jul 2020 15:03:39 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Song Liu , Hans de Goede , Richard Weinberger , Minchan Kim , linux-mtd@lists.infradead.org, dm-devel@redhat.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, drbd-dev@lists.linbit.com, linux-raid@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org Subject: [PATCH 02/14] drbd: remove dead code in device_to_statistics Date: Sun, 26 Jul 2020 17:03:21 +0200 Message-Id: <20200726150333.305527-3-hch@lst.de> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200726150333.305527-1-hch@lst.de> References: <20200726150333.305527-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Ever since the switch to blk-mq, a lower device not used for VM writeback will not be marked congested, so the check will never trigger. Signed-off-by: Christoph Hellwig --- drivers/block/drbd/drbd_nl.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index d0d9a549b58388..650372ee2c7822 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -3370,7 +3370,6 @@ static void device_to_statistics(struct device_statistics *s, if (get_ldev(device)) { struct drbd_md *md = &device->ldev->md; u64 *history_uuids = (u64 *)s->history_uuids; - struct request_queue *q; int n; spin_lock_irq(&md->uuid_lock); @@ -3384,11 +3383,6 @@ static void device_to_statistics(struct device_statistics *s, spin_unlock_irq(&md->uuid_lock); s->dev_disk_flags = md->flags; - q = bdev_get_queue(device->ldev->backing_bdev); - s->dev_lower_blocked = - bdi_congested(q->backing_dev_info, - (1 << WB_async_congested) | - (1 << WB_sync_congested)); put_ldev(device); } s->dev_size = drbd_get_capacity(device->this_bdev); From patchwork Sun Jul 26 15:03:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11685821 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1C4A4138A for ; Sun, 26 Jul 2020 15:05:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0346C206D8 for ; Sun, 26 Jul 2020 15:05:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="YMWzVCgz" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727907AbgGZPE7 (ORCPT ); Sun, 26 Jul 2020 11:04:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47336 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726857AbgGZPDw (ORCPT ); Sun, 26 Jul 2020 11:03:52 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AEA3AC0619D2; Sun, 26 Jul 2020 08:03:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=S8Ttwcc94B0Xl9tEeP23NWmZAdd1Fm0GDSqESxJAyFs=; b=YMWzVCgzX29h5w6kZFM6oUoNMr 9gXLP/Ib5QVPfsZG0AAn/rXKE+D/N2C8DnBZzhv3p4q+7Hvzj4rXtmv1GWAV6nNCHkYnow6VnUeGb tfg7+LutO+I7qgJihKfLNV0bioQiwOd7ue+CPYdTYIJKpWq+05hnuInoQy1ujJQexg4BRsGSlIz2Z YZ7J8pfIWExlvsv9pgxeI1cIQvPqFjaJ3zRlmz7+bHnAJieME2sgtOnGvFS+Opg0XaNy/I+HY6ox/ qofchlkyZcbtNwfFSRr4nu6fEXNekMBd5Rs/0KLFlzA4MdQTFmHHa3ICI8wvaZJWqiBY1fFhGVFrd 8CX0M/+w==; Received: from [2001:4bb8:18c:2acc:2375:88ff:9f84:118d] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jziBh-0005g2-F1; Sun, 26 Jul 2020 15:03:41 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Song Liu , Hans de Goede , Richard Weinberger , Minchan Kim , linux-mtd@lists.infradead.org, dm-devel@redhat.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, drbd-dev@lists.linbit.com, linux-raid@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org, Johannes Thumshirn Subject: [PATCH 03/14] drbd: remove RB_CONGESTED_REMOTE Date: Sun, 26 Jul 2020 17:03:22 +0200 Message-Id: <20200726150333.305527-4-hch@lst.de> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200726150333.305527-1-hch@lst.de> References: <20200726150333.305527-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org This case isn't ever used. Signed-off-by: Christoph Hellwig Reviewed-by: Johannes Thumshirn --- drivers/block/drbd/drbd_req.c | 4 ---- include/linux/drbd.h | 1 - 2 files changed, 5 deletions(-) diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c index 674be09b2da94a..4d944f2eb56efa 100644 --- a/drivers/block/drbd/drbd_req.c +++ b/drivers/block/drbd/drbd_req.c @@ -901,13 +901,9 @@ static bool drbd_may_do_local_read(struct drbd_device *device, sector_t sector, static bool remote_due_to_read_balancing(struct drbd_device *device, sector_t sector, enum drbd_read_balancing rbm) { - struct backing_dev_info *bdi; int stripe_shift; switch (rbm) { - case RB_CONGESTED_REMOTE: - bdi = device->ldev->backing_bdev->bd_disk->queue->backing_dev_info; - return bdi_read_congested(bdi); case RB_LEAST_PENDING: return atomic_read(&device->local_cnt) > atomic_read(&device->ap_pending_cnt) + atomic_read(&device->rs_pending_cnt); diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 5755537b51b114..6a8286132751df 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -94,7 +94,6 @@ enum drbd_read_balancing { RB_PREFER_REMOTE, RB_ROUND_ROBIN, RB_LEAST_PENDING, - RB_CONGESTED_REMOTE, RB_32K_STRIPING, RB_64K_STRIPING, RB_128K_STRIPING, From patchwork Sun Jul 26 15:03:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11685815 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 91FD5913 for ; Sun, 26 Jul 2020 15:04:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 756CB20773 for ; Sun, 26 Jul 2020 15:04:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="ZE4oTpId" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727871AbgGZPEx (ORCPT ); Sun, 26 Jul 2020 11:04:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47338 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726877AbgGZPDx (ORCPT ); Sun, 26 Jul 2020 11:03:53 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 206BCC0619D4; Sun, 26 Jul 2020 08:03:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=2XFxJKGxcOOVZQBrWMAqxenYfkp6e0GZfp9ni0DLWtg=; b=ZE4oTpId+pT7G6zEvfTK/sqnvr 4cLSa7rwQXQHqnGnLAotS6phFT4NL1IJMcr8TEaFwR0yBvO5L/PSolSc53Tqi9MVNnSz3fCs0q3gS hEUWbcgaAJYHgnaTS9F1VZ6r6keNiWAqzboB1R52AD+sshtiD7WcuoDXicBJkr3CEQqtdZ/M3T7ER 6RSRamzVJHM2Al3vwXiQGazeavNpkSiqk8JdetLo9KxJcIyaM5phx4BaSVkNXbT38CfEmOaOuK0wx EtOtZZ2KUzx0dNvwL02Xj7jne1txcIxNoRq5MpLbc924ni87Ja7p2zTMgrWBFC9gOilDPLRCJGOk7 zRbKCuMQ==; Received: from [2001:4bb8:18c:2acc:2375:88ff:9f84:118d] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jziBi-0005gE-QC; Sun, 26 Jul 2020 15:03:43 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Song Liu , Hans de Goede , Richard Weinberger , Minchan Kim , linux-mtd@lists.infradead.org, dm-devel@redhat.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, drbd-dev@lists.linbit.com, linux-raid@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org, David Sterba Subject: [PATCH 04/14] bdi: initialize ->ra_pages in bdi_init Date: Sun, 26 Jul 2020 17:03:23 +0200 Message-Id: <20200726150333.305527-5-hch@lst.de> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200726150333.305527-1-hch@lst.de> References: <20200726150333.305527-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Set up a readahead size by default, as very few users have a good reason to change it. Signed-off-by: Christoph Hellwig Acked-by: David Sterba [btrfs] Acked-by: Richard Weinberger [ubifs, mtd] --- block/blk-core.c | 1 - drivers/mtd/mtdcore.c | 1 + fs/9p/vfs_super.c | 4 ++-- fs/afs/super.c | 1 - fs/btrfs/disk-io.c | 1 - fs/fuse/inode.c | 1 - fs/nfs/super.c | 9 +-------- fs/ubifs/super.c | 1 + fs/vboxsf/super.c | 1 + mm/backing-dev.c | 1 + 10 files changed, 7 insertions(+), 14 deletions(-) diff --git a/block/blk-core.c b/block/blk-core.c index 93104c7470e8ac..ea1665de7a2079 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -538,7 +538,6 @@ struct request_queue *blk_alloc_queue(int node_id) if (!q->stats) goto fail_stats; - q->backing_dev_info->ra_pages = VM_READAHEAD_PAGES; q->backing_dev_info->capabilities = BDI_CAP_CGROUP_WRITEBACK; q->node = node_id; diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 7d930569a7dfb7..01b3fe888d885b 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -2196,6 +2196,7 @@ static struct backing_dev_info * __init mtd_bdi_init(char *name) bdi = bdi_alloc(NUMA_NO_NODE); if (!bdi) return ERR_PTR(-ENOMEM); + bdi->ra_pages = 0; /* * We put '-0' suffix to the name to get the same name format as we diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c index 74df32be4c6a52..a338eb979cadf9 100644 --- a/fs/9p/vfs_super.c +++ b/fs/9p/vfs_super.c @@ -80,8 +80,8 @@ v9fs_fill_super(struct super_block *sb, struct v9fs_session_info *v9ses, if (ret) return ret; - if (v9ses->cache) - sb->s_bdi->ra_pages = VM_READAHEAD_PAGES; + if (!v9ses->cache) + sb->s_bdi->ra_pages = 0; sb->s_flags |= SB_ACTIVE | SB_DIRSYNC; if (!v9ses->cache) diff --git a/fs/afs/super.c b/fs/afs/super.c index b552357b1d1379..3a40ee752c1e3f 100644 --- a/fs/afs/super.c +++ b/fs/afs/super.c @@ -456,7 +456,6 @@ static int afs_fill_super(struct super_block *sb, struct afs_fs_context *ctx) ret = super_setup_bdi(sb); if (ret) return ret; - sb->s_bdi->ra_pages = VM_READAHEAD_PAGES; /* allocate the root inode and dentry */ if (as->dyn_root) { diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index ad157b55d7f5f0..f92c45fe019c48 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3033,7 +3033,6 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device } sb->s_bdi->capabilities |= BDI_CAP_CGROUP_WRITEBACK; - sb->s_bdi->ra_pages = VM_READAHEAD_PAGES; sb->s_bdi->ra_pages *= btrfs_super_num_devices(disk_super); sb->s_bdi->ra_pages = max(sb->s_bdi->ra_pages, SZ_4M / PAGE_SIZE); diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index bba747520e9b08..17b00670fb539e 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -1049,7 +1049,6 @@ static int fuse_bdi_init(struct fuse_conn *fc, struct super_block *sb) if (err) return err; - sb->s_bdi->ra_pages = VM_READAHEAD_PAGES; /* fuse does it's own writeback accounting */ sb->s_bdi->capabilities = BDI_CAP_NO_ACCT_WB | BDI_CAP_STRICTLIMIT; diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 7a70287f21a2c1..f943e37853fa25 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -1200,13 +1200,6 @@ static void nfs_get_cache_cookie(struct super_block *sb, } #endif -static void nfs_set_readahead(struct backing_dev_info *bdi, - unsigned long iomax_pages) -{ - bdi->ra_pages = VM_READAHEAD_PAGES; - bdi->io_pages = iomax_pages; -} - int nfs_get_tree_common(struct fs_context *fc) { struct nfs_fs_context *ctx = nfs_fc2context(fc); @@ -1251,7 +1244,7 @@ int nfs_get_tree_common(struct fs_context *fc) MINOR(server->s_dev)); if (error) goto error_splat_super; - nfs_set_readahead(s->s_bdi, server->rpages); + s->s_bdi->io_pages = server->rpages; server->super = s; } diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index 7fc2f3f07c16ed..ee7692e7a35371 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -2159,6 +2159,7 @@ static int ubifs_fill_super(struct super_block *sb, void *data, int silent) c->vi.vol_id); if (err) goto out_close; + sb->s_bdi->ra_pages = 0; /* ubifs does its own readahead */ sb->s_fs_info = c; sb->s_magic = UBIFS_SUPER_MAGIC; diff --git a/fs/vboxsf/super.c b/fs/vboxsf/super.c index 8fe03b4a0d2b03..6574ae5a97c2c8 100644 --- a/fs/vboxsf/super.c +++ b/fs/vboxsf/super.c @@ -167,6 +167,7 @@ static int vboxsf_fill_super(struct super_block *sb, struct fs_context *fc) err = super_setup_bdi_name(sb, "vboxsf-%d", sbi->bdi_id); if (err) goto fail_free; + sb->s_bdi->ra_pages = 0; /* Turn source into a shfl_string and map the folder */ size = strlen(fc->source) + 1; diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 8e8b00627bb2d8..3e441e0ff1bc88 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -746,6 +746,7 @@ struct backing_dev_info *bdi_alloc(int node_id) kfree(bdi); return NULL; } + bdi->ra_pages = VM_READAHEAD_PAGES; return bdi; } EXPORT_SYMBOL(bdi_alloc); From patchwork Sun Jul 26 15:03:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11685797 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2BB771392 for ; Sun, 26 Jul 2020 15:04:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0F79520791 for ; Sun, 26 Jul 2020 15:04:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="igVxkl/U" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726990AbgGZPEB (ORCPT ); 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Received: from [2001:4bb8:18c:2acc:2375:88ff:9f84:118d] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jziBk-0005gU-6f; Sun, 26 Jul 2020 15:03:44 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Song Liu , Hans de Goede , Richard Weinberger , Minchan Kim , linux-mtd@lists.infradead.org, dm-devel@redhat.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, drbd-dev@lists.linbit.com, linux-raid@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org Subject: [PATCH 05/14] md: update the optimal I/O size on reshape Date: Sun, 26 Jul 2020 17:03:24 +0200 Message-Id: <20200726150333.305527-6-hch@lst.de> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200726150333.305527-1-hch@lst.de> References: <20200726150333.305527-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org The raid5 and raid10 drivers currently update the read-ahead size, but not the optimal I/O size on reshape. To prepare for deriving the read-ahead size from the optimal I/O size make sure it is updated as well. Signed-off-by: Christoph Hellwig --- drivers/md/raid10.c | 22 ++++++++++++++-------- drivers/md/raid5.c | 10 ++++++++-- 2 files changed, 22 insertions(+), 10 deletions(-) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index b1d0c9d4ef7757..9f88ff9bdee437 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -3695,10 +3695,20 @@ static struct r10conf *setup_conf(struct mddev *mddev) return ERR_PTR(err); } +static void raid10_set_io_opt(struct r10conf *conf) +{ + int raid_disks = conf->geo.raid_disks; + + if (!(conf->geo.raid_disks % conf->geo.near_copies)) + raid_disks /= conf->geo.near_copies; + blk_queue_io_opt(conf->mddev->queue, (conf->mddev->chunk_sectors << 9) * + raid_disks); +} + static int raid10_run(struct mddev *mddev) { struct r10conf *conf; - int i, disk_idx, chunk_size; + int i, disk_idx; struct raid10_info *disk; struct md_rdev *rdev; sector_t size; @@ -3734,18 +3744,13 @@ static int raid10_run(struct mddev *mddev) mddev->thread = conf->thread; conf->thread = NULL; - chunk_size = mddev->chunk_sectors << 9; if (mddev->queue) { blk_queue_max_discard_sectors(mddev->queue, mddev->chunk_sectors); blk_queue_max_write_same_sectors(mddev->queue, 0); blk_queue_max_write_zeroes_sectors(mddev->queue, 0); - blk_queue_io_min(mddev->queue, chunk_size); - if (conf->geo.raid_disks % conf->geo.near_copies) - blk_queue_io_opt(mddev->queue, chunk_size * conf->geo.raid_disks); - else - blk_queue_io_opt(mddev->queue, chunk_size * - (conf->geo.raid_disks / conf->geo.near_copies)); + blk_queue_io_min(mddev->queue, mddev->chunk_sectors << 9); + raid10_set_io_opt(conf); } rdev_for_each(rdev, mddev) { @@ -4719,6 +4724,7 @@ static void end_reshape(struct r10conf *conf) stripe /= conf->geo.near_copies; if (conf->mddev->queue->backing_dev_info->ra_pages < 2 * stripe) conf->mddev->queue->backing_dev_info->ra_pages = 2 * stripe; + raid10_set_io_opt(conf); } conf->fullsync = 0; } diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index d7780b1dd0c528..68e41ce3ca75cc 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -7123,6 +7123,12 @@ static int only_parity(int raid_disk, int algo, int raid_disks, int max_degraded return 0; } +static void raid5_set_io_opt(struct r5conf *conf) +{ + blk_queue_io_opt(conf->mddev->queue, (conf->chunk_sectors << 9) * + (conf->raid_disks - conf->max_degraded)); +} + static int raid5_run(struct mddev *mddev) { struct r5conf *conf; @@ -7412,8 +7418,7 @@ static int raid5_run(struct mddev *mddev) chunk_size = mddev->chunk_sectors << 9; blk_queue_io_min(mddev->queue, chunk_size); - blk_queue_io_opt(mddev->queue, chunk_size * - (conf->raid_disks - conf->max_degraded)); + raid5_set_io_opt(conf); mddev->queue->limits.raid_partial_stripes_expensive = 1; /* * We can only discard a whole stripe. It doesn't make sense to @@ -8006,6 +8011,7 @@ static void end_reshape(struct r5conf *conf) / PAGE_SIZE); if (conf->mddev->queue->backing_dev_info->ra_pages < 2 * stripe) conf->mddev->queue->backing_dev_info->ra_pages = 2 * stripe; + raid5_set_io_opt(conf); } } } From patchwork Sun Jul 26 15:03:25 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11685809 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1E8DB913 for ; Sun, 26 Jul 2020 15:04:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 01A4120759 for ; Sun, 26 Jul 2020 15:04:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="i661P2un" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726890AbgGZPDx (ORCPT ); Sun, 26 Jul 2020 11:03:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47328 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726121AbgGZPDw (ORCPT ); Sun, 26 Jul 2020 11:03:52 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C2DEFC0619D2; Sun, 26 Jul 2020 08:03:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=FzZ6/zgVBqPtRjoXgIlMHr6borSDoijxnK9rowFZCss=; b=i661P2un3Yqo5Bl+gXoBfVA3+2 q/mdd4jHrZPhfGhxoOfINJsy1b/y3e1g8eoP6Krs26RbQd7X0KETRpP84Uz15AJfcR25vJhPdDfPj 5DFDI94BJM3G1ys/toUXeVcm3Ps52w0jx6AOTxmwN5wS/b8PF0Mu/J/GXLNppMtpxDGFkfNwUDWai wXmB+3Hu5y48VgIKEc1T/aLBdlS4I01/EUx9MAfBwmaiDR40Q+9JipFTIf8doRxSmLCPodtztNKsS MJ+f1bk8TfM7bbhG7pomWFPFioasGW5qMcMHD1vZEfg8FdSESN8KCAh+rETHUojsKIgcDEezqlQ0R LzRZt3dg==; Received: from [2001:4bb8:18c:2acc:2375:88ff:9f84:118d] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jziBl-0005ge-IL; Sun, 26 Jul 2020 15:03:46 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Song Liu , Hans de Goede , Richard Weinberger , Minchan Kim , linux-mtd@lists.infradead.org, dm-devel@redhat.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, drbd-dev@lists.linbit.com, linux-raid@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org Subject: [PATCH 06/14] block: lift setting the readahead size into the block layer Date: Sun, 26 Jul 2020 17:03:25 +0200 Message-Id: <20200726150333.305527-7-hch@lst.de> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200726150333.305527-1-hch@lst.de> References: <20200726150333.305527-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Drivers shouldn't really mess with the readahead size, as that is a VM concept. Instead set it based on the optimal I/O size by lifting the algorithm from the md driver when registering the disk. Also set bdi->io_pages there as well by applying the same scheme based on max_sectors. Signed-off-by: Christoph Hellwig --- block/blk-settings.c | 5 ++--- block/blk-sysfs.c | 1 - block/genhd.c | 13 +++++++++++-- drivers/block/aoe/aoeblk.c | 2 -- drivers/block/drbd/drbd_nl.c | 12 +----------- drivers/md/bcache/super.c | 4 ---- drivers/md/dm-table.c | 3 --- drivers/md/raid0.c | 16 ---------------- drivers/md/raid10.c | 24 +----------------------- drivers/md/raid5.c | 13 +------------ 10 files changed, 16 insertions(+), 77 deletions(-) diff --git a/block/blk-settings.c b/block/blk-settings.c index 76a7e03bcd6cac..01049e9b998f1d 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -452,6 +452,8 @@ EXPORT_SYMBOL(blk_limits_io_opt); void blk_queue_io_opt(struct request_queue *q, unsigned int opt) { blk_limits_io_opt(&q->limits, opt); + q->backing_dev_info->ra_pages = + max(queue_io_opt(q) * 2 / PAGE_SIZE, VM_READAHEAD_PAGES); } EXPORT_SYMBOL(blk_queue_io_opt); @@ -628,9 +630,6 @@ void disk_stack_limits(struct gendisk *disk, struct block_device *bdev, printk(KERN_NOTICE "%s: Warning: Device %s is misaligned\n", top, bottom); } - - t->backing_dev_info->io_pages = - t->limits.max_sectors >> (PAGE_SHIFT - 9); } EXPORT_SYMBOL(disk_stack_limits); diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 7dda709f3ccb6f..ce418d9128a0b2 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -245,7 +245,6 @@ queue_max_sectors_store(struct request_queue *q, const char *page, size_t count) spin_lock_irq(&q->queue_lock); q->limits.max_sectors = max_sectors_kb << 1; - q->backing_dev_info->io_pages = max_sectors_kb >> (PAGE_SHIFT - 10); spin_unlock_irq(&q->queue_lock); return ret; diff --git a/block/genhd.c b/block/genhd.c index 8b1e9f48957cb5..097d4e4bc0b8a2 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -775,6 +775,7 @@ static void __device_add_disk(struct device *parent, struct gendisk *disk, const struct attribute_group **groups, bool register_queue) { + struct request_queue *q = disk->queue; dev_t devt; int retval; @@ -785,7 +786,7 @@ static void __device_add_disk(struct device *parent, struct gendisk *disk, * registration. */ if (register_queue) - elevator_init_mq(disk->queue); + elevator_init_mq(q); /* minors == 0 indicates to use ext devt from part0 and should * be accompanied with EXT_DEVT flag. Make sure all @@ -815,10 +816,18 @@ static void __device_add_disk(struct device *parent, struct gendisk *disk, disk->flags |= GENHD_FL_SUPPRESS_PARTITION_INFO; disk->flags |= GENHD_FL_NO_PART_SCAN; } else { - struct backing_dev_info *bdi = disk->queue->backing_dev_info; + struct backing_dev_info *bdi = q->backing_dev_info; struct device *dev = disk_to_dev(disk); int ret; + /* + * For read-ahead of large files to be effective, we need to + * readahead at least twice the optimal I/O size. + */ + bdi->ra_pages = max(queue_io_opt(q) * 2 / PAGE_SIZE, + VM_READAHEAD_PAGES); + bdi->io_pages = queue_max_sectors(q) >> (PAGE_SHIFT - 9); + /* Register BDI before referencing it from bdev */ dev->devt = devt; ret = bdi_register(bdi, "%u:%u", MAJOR(devt), MINOR(devt)); diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c index 5ca7216e9e01f3..89b33b402b4e52 100644 --- a/drivers/block/aoe/aoeblk.c +++ b/drivers/block/aoe/aoeblk.c @@ -347,7 +347,6 @@ aoeblk_gdalloc(void *vp) mempool_t *mp; struct request_queue *q; struct blk_mq_tag_set *set; - enum { KB = 1024, MB = KB * KB, READ_AHEAD = 2 * MB, }; ulong flags; int late = 0; int err; @@ -407,7 +406,6 @@ aoeblk_gdalloc(void *vp) WARN_ON(d->gd); WARN_ON(d->flags & DEVFL_UP); blk_queue_max_hw_sectors(q, BLK_DEF_MAX_SECTORS); - q->backing_dev_info->ra_pages = READ_AHEAD / PAGE_SIZE; d->bufpool = mp; d->blkq = gd->queue = q; q->queuedata = d; diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index 650372ee2c7822..212bf711fb6b41 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -1360,18 +1360,8 @@ static void drbd_setup_queue_param(struct drbd_device *device, struct drbd_backi decide_on_discard_support(device, q, b, discard_zeroes_if_aligned); decide_on_write_same_support(device, q, b, o, disable_write_same); - if (b) { + if (b) blk_stack_limits(&q->limits, &b->limits, 0); - - if (q->backing_dev_info->ra_pages != - b->backing_dev_info->ra_pages) { - drbd_info(device, "Adjusting my ra_pages to backing device's (%lu -> %lu)\n", - q->backing_dev_info->ra_pages, - b->backing_dev_info->ra_pages); - q->backing_dev_info->ra_pages = - b->backing_dev_info->ra_pages; - } - } fixup_discard_if_not_supported(q); fixup_write_zeroes(device, q); } diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index 9e45faa054b6f4..9d3f0711be030f 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -1367,10 +1367,6 @@ static int cached_dev_init(struct cached_dev *dc, unsigned int block_size) if (ret) return ret; - dc->disk.disk->queue->backing_dev_info->ra_pages = - max(dc->disk.disk->queue->backing_dev_info->ra_pages, - q->backing_dev_info->ra_pages); - atomic_set(&dc->io_errors, 0); dc->io_disable = false; dc->error_limit = DEFAULT_CACHED_DEV_ERROR_LIMIT; diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index aac4c31cfc8498..324a42ed2f8894 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -1924,9 +1924,6 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, q->nr_zones = blkdev_nr_zones(t->md->disk); } #endif - - /* Allow reads to exceed readahead limits */ - q->backing_dev_info->io_pages = limits->max_sectors >> (PAGE_SHIFT - 9); } unsigned int dm_table_get_num_targets(struct dm_table *t) diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index f54a449f97aa79..aa2d7279176880 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -410,22 +410,6 @@ static int raid0_run(struct mddev *mddev) mdname(mddev), (unsigned long long)mddev->array_sectors); - if (mddev->queue) { - /* calculate the max read-ahead size. - * For read-ahead of large files to be effective, we need to - * readahead at least twice a whole stripe. i.e. number of devices - * multiplied by chunk size times 2. - * If an individual device has an ra_pages greater than the - * chunk size, then we will not drive that device as hard as it - * wants. We consider this a configuration error: a larger - * chunksize should be used in that case. - */ - int stripe = mddev->raid_disks * - (mddev->chunk_sectors << 9) / PAGE_SIZE; - if (mddev->queue->backing_dev_info->ra_pages < 2* stripe) - mddev->queue->backing_dev_info->ra_pages = 2* stripe; - } - dump_zones(mddev); ret = md_integrity_register(mddev); diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 9f88ff9bdee437..23d15acbf457d4 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -3865,19 +3865,6 @@ static int raid10_run(struct mddev *mddev) mddev->resync_max_sectors = size; set_bit(MD_FAILFAST_SUPPORTED, &mddev->flags); - if (mddev->queue) { - int stripe = conf->geo.raid_disks * - ((mddev->chunk_sectors << 9) / PAGE_SIZE); - - /* Calculate max read-ahead size. - * We need to readahead at least twice a whole stripe.... - * maybe... - */ - stripe /= conf->geo.near_copies; - if (mddev->queue->backing_dev_info->ra_pages < 2 * stripe) - mddev->queue->backing_dev_info->ra_pages = 2 * stripe; - } - if (md_integrity_register(mddev)) goto out_free_conf; @@ -4715,17 +4702,8 @@ static void end_reshape(struct r10conf *conf) conf->reshape_safe = MaxSector; spin_unlock_irq(&conf->device_lock); - /* read-ahead size must cover two whole stripes, which is - * 2 * (datadisks) * chunksize where 'n' is the number of raid devices - */ - if (conf->mddev->queue) { - int stripe = conf->geo.raid_disks * - ((conf->mddev->chunk_sectors << 9) / PAGE_SIZE); - stripe /= conf->geo.near_copies; - if (conf->mddev->queue->backing_dev_info->ra_pages < 2 * stripe) - conf->mddev->queue->backing_dev_info->ra_pages = 2 * stripe; + if (conf->mddev->queue) raid10_set_io_opt(conf); - } conf->fullsync = 0; } diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 68e41ce3ca75cc..415ce3cc155698 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -7413,8 +7413,6 @@ static int raid5_run(struct mddev *mddev) int data_disks = conf->previous_raid_disks - conf->max_degraded; int stripe = data_disks * ((mddev->chunk_sectors << 9) / PAGE_SIZE); - if (mddev->queue->backing_dev_info->ra_pages < 2 * stripe) - mddev->queue->backing_dev_info->ra_pages = 2 * stripe; chunk_size = mddev->chunk_sectors << 9; blk_queue_io_min(mddev->queue, chunk_size); @@ -8002,17 +8000,8 @@ static void end_reshape(struct r5conf *conf) spin_unlock_irq(&conf->device_lock); wake_up(&conf->wait_for_overlap); - /* read-ahead size must cover two whole stripes, which is - * 2 * (datadisks) * chunksize where 'n' is the number of raid devices - */ - if (conf->mddev->queue) { - int data_disks = conf->raid_disks - conf->max_degraded; - int stripe = data_disks * ((conf->chunk_sectors << 9) - / PAGE_SIZE); - if (conf->mddev->queue->backing_dev_info->ra_pages < 2 * stripe) - conf->mddev->queue->backing_dev_info->ra_pages = 2 * stripe; + if (conf->mddev->queue) raid5_set_io_opt(conf); - } } } From patchwork Sun Jul 26 15:03:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11685805 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AD32B6C1 for ; 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See http://www.infradead.org/rpr.html Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Generate the queue_sysfs_entry given that we have all the required information for it, and rename the generated show and store methods to match the other ones in the file. Signed-off-by: Christoph Hellwig Reviewed-by: Johannes Thumshirn --- block/blk-sysfs.c | 31 +++++++++---------------------- 1 file changed, 9 insertions(+), 22 deletions(-) diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index ce418d9128a0b2..cfbb039da8751f 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -257,16 +257,16 @@ static ssize_t queue_max_hw_sectors_show(struct request_queue *q, char *page) return queue_var_show(max_hw_sectors_kb, (page)); } -#define QUEUE_SYSFS_BIT_FNS(name, flag, neg) \ +#define QUEUE_SYSFS_BIT_FNS(_name, flag, neg) \ static ssize_t \ -queue_show_##name(struct request_queue *q, char *page) \ +queue_##_name##_show(struct request_queue *q, char *page) \ { \ int bit; \ bit = test_bit(QUEUE_FLAG_##flag, &q->queue_flags); \ return queue_var_show(neg ? !bit : bit, page); \ } \ static ssize_t \ -queue_store_##name(struct request_queue *q, const char *page, size_t count) \ +queue_##_name##_store(struct request_queue *q, const char *page, size_t count) \ { \ unsigned long val; \ ssize_t ret; \ @@ -281,7 +281,12 @@ queue_store_##name(struct request_queue *q, const char *page, size_t count) \ else \ blk_queue_flag_clear(QUEUE_FLAG_##flag, q); \ return ret; \ -} +} \ +static struct queue_sysfs_entry queue_##_name##_entry = { \ + .attr = { .name = __stringify(_name), .mode = 0644 }, \ + .show = queue_##_name##_show, \ + .store = queue_##_name##_store, \ +}; QUEUE_SYSFS_BIT_FNS(nonrot, NONROT, 1); QUEUE_SYSFS_BIT_FNS(random, ADD_RANDOM, 0); @@ -661,12 +666,6 @@ static struct queue_sysfs_entry queue_zone_append_max_entry = { .show = queue_zone_append_max_show, }; -static struct queue_sysfs_entry queue_nonrot_entry = { - .attr = {.name = "rotational", .mode = 0644 }, - .show = queue_show_nonrot, - .store = queue_store_nonrot, -}; - static struct queue_sysfs_entry queue_zoned_entry = { .attr = {.name = "zoned", .mode = 0444 }, .show = queue_zoned_show, @@ -699,18 +698,6 @@ static struct queue_sysfs_entry queue_rq_affinity_entry = { .store = queue_rq_affinity_store, }; -static struct queue_sysfs_entry queue_iostats_entry = { - .attr = {.name = "iostats", .mode = 0644 }, - .show = queue_show_iostats, - .store = queue_store_iostats, -}; - -static struct queue_sysfs_entry queue_random_entry = { - .attr = {.name = "add_random", .mode = 0644 }, - .show = queue_show_random, - .store = queue_store_random, -}; - static struct queue_sysfs_entry queue_poll_entry = { .attr = {.name = "io_poll", .mode = 0644 }, .show = queue_poll_show, From patchwork Sun Jul 26 15:03:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11685823 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BD6846C1 for ; Sun, 26 Jul 2020 15:05:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9BACE20759 for ; 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bh=fgrmtzY2RTn3uqEl7NE2KYNoJXb5Vjc7RCDyRtLWKlU=; b=CykWczfDyPtUotuOuKPDdIuXBa Yfla4i/HN43Ko24+UeW/GEb+v9iMLUkS6Cnnof4Ak1EGSzCF0sc5gXLWw3hX9SSRwPMVm2Jca+MtY SrQWSNAC1px8i8UXskCjgLc3vqH8AJCgtNO5uTvxG6LVnRfAtWCkGkaNBMzFju/BjIbX6AZ/VKba5 7nAM2bCmpf8WrTBZyx4cFAIA/LbeFcFWz3JJXB3/PV5X13XLYkcWpWhFQqQ2WCZN3EeoXi8NuUf2n jeBlL2+B5ro2/cMFSZ++rBzQ2m5+PaWBNJSfYU2Bam2D28mUEximIjMGeVY2BwsCz+vlGXb1d9WVa 8myBKyzQ==; Received: from [2001:4bb8:18c:2acc:2375:88ff:9f84:118d] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jziBo-0005hA-G1; Sun, 26 Jul 2020 15:03:48 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Song Liu , Hans de Goede , Richard Weinberger , Minchan Kim , linux-mtd@lists.infradead.org, dm-devel@redhat.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, drbd-dev@lists.linbit.com, linux-raid@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org, Johannes Thumshirn Subject: [PATCH 08/14] block: add helper macros for queue sysfs entries Date: Sun, 26 Jul 2020 17:03:27 +0200 Message-Id: <20200726150333.305527-9-hch@lst.de> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200726150333.305527-1-hch@lst.de> References: <20200726150333.305527-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Add two helpers macros to avoid boilerplate code for the queue sysfs entries. Signed-off-by: Christoph Hellwig Reviewed-by: Johannes Thumshirn --- block/blk-sysfs.c | 248 +++++++++++----------------------------------- 1 file changed, 58 insertions(+), 190 deletions(-) diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index cfbb039da8751f..9bb4e42fb73265 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -551,201 +551,69 @@ static ssize_t queue_dax_show(struct request_queue *q, char *page) return queue_var_show(blk_queue_dax(q), page); } -static struct queue_sysfs_entry queue_requests_entry = { - .attr = {.name = "nr_requests", .mode = 0644 }, - .show = queue_requests_show, - .store = queue_requests_store, -}; - -static struct queue_sysfs_entry queue_ra_entry = { - .attr = {.name = "read_ahead_kb", .mode = 0644 }, - .show = queue_ra_show, - .store = queue_ra_store, -}; - -static struct queue_sysfs_entry queue_max_sectors_entry = { - .attr = {.name = "max_sectors_kb", .mode = 0644 }, - .show = queue_max_sectors_show, - .store = queue_max_sectors_store, -}; +#define QUEUE_RO_ENTRY(_prefix, _name) \ +static struct queue_sysfs_entry _prefix##_entry = { \ + .attr = { .name = _name, .mode = 0444 }, \ + .show = _prefix##_show, \ +}; + +#define QUEUE_RW_ENTRY(_prefix, _name) \ +static struct queue_sysfs_entry _prefix##_entry = { \ + .attr = { .name = _name, .mode = 0644 }, \ + .show = _prefix##_show, \ + .store = _prefix##_store, \ +}; + +QUEUE_RW_ENTRY(queue_requests, "nr_requests"); +QUEUE_RW_ENTRY(queue_ra, "read_ahead_kb"); +QUEUE_RW_ENTRY(queue_max_sectors, "max_sectors_kb"); +QUEUE_RO_ENTRY(queue_max_hw_sectors, "max_hw_sectors_kb"); +QUEUE_RO_ENTRY(queue_max_segments, "max_segments"); +QUEUE_RO_ENTRY(queue_max_integrity_segments, "max_integrity_segments"); +QUEUE_RO_ENTRY(queue_max_segment_size, "max_segment_size"); +QUEUE_RW_ENTRY(elv_iosched, "scheduler"); + +QUEUE_RO_ENTRY(queue_logical_block_size, "logical_block_size"); +QUEUE_RO_ENTRY(queue_physical_block_size, "physical_block_size"); +QUEUE_RO_ENTRY(queue_chunk_sectors, "chunk_sectors"); +QUEUE_RO_ENTRY(queue_io_min, "minimum_io_size"); +QUEUE_RO_ENTRY(queue_io_opt, "optimal_io_size"); + +QUEUE_RO_ENTRY(queue_max_discard_segments, "max_discard_segments"); +QUEUE_RO_ENTRY(queue_discard_granularity, "discard_granularity"); +QUEUE_RO_ENTRY(queue_discard_max_hw, "discard_max_hw_bytes"); +QUEUE_RW_ENTRY(queue_discard_max, "discard_max_bytes"); +QUEUE_RO_ENTRY(queue_discard_zeroes_data, "discard_zeroes_data"); + +QUEUE_RO_ENTRY(queue_write_same_max, "write_same_max_bytes"); +QUEUE_RO_ENTRY(queue_write_zeroes_max, "write_zeroes_max_bytes"); +QUEUE_RO_ENTRY(queue_zone_append_max, "zone_append_max_bytes"); + +QUEUE_RO_ENTRY(queue_zoned, "zoned"); +QUEUE_RO_ENTRY(queue_nr_zones, "nr_zones"); +QUEUE_RO_ENTRY(queue_max_open_zones, "max_open_zones"); +QUEUE_RO_ENTRY(queue_max_active_zones, "max_active_zones"); + +QUEUE_RW_ENTRY(queue_nomerges, "nomerges"); +QUEUE_RW_ENTRY(queue_rq_affinity, "rq_affinity"); +QUEUE_RW_ENTRY(queue_poll, "io_poll"); +QUEUE_RW_ENTRY(queue_poll_delay, "io_poll_delay"); +QUEUE_RW_ENTRY(queue_wc, "write_cache"); +QUEUE_RO_ENTRY(queue_fua, "fua"); +QUEUE_RO_ENTRY(queue_dax, "dax"); +QUEUE_RW_ENTRY(queue_io_timeout, "io_timeout"); +QUEUE_RW_ENTRY(queue_wb_lat, "wbt_lat_usec"); -static struct queue_sysfs_entry queue_max_hw_sectors_entry = { - .attr = {.name = "max_hw_sectors_kb", .mode = 0444 }, - .show = queue_max_hw_sectors_show, -}; - -static struct queue_sysfs_entry queue_max_segments_entry = { - .attr = {.name = "max_segments", .mode = 0444 }, - .show = queue_max_segments_show, -}; - -static struct queue_sysfs_entry queue_max_discard_segments_entry = { - .attr = {.name = "max_discard_segments", .mode = 0444 }, - .show = queue_max_discard_segments_show, -}; - -static struct queue_sysfs_entry queue_max_integrity_segments_entry = { - .attr = {.name = "max_integrity_segments", .mode = 0444 }, - .show = queue_max_integrity_segments_show, -}; - -static struct queue_sysfs_entry queue_max_segment_size_entry = { - .attr = {.name = "max_segment_size", .mode = 0444 }, - .show = queue_max_segment_size_show, -}; - -static struct queue_sysfs_entry queue_iosched_entry = { - .attr = {.name = "scheduler", .mode = 0644 }, - .show = elv_iosched_show, - .store = elv_iosched_store, -}; +#ifdef CONFIG_BLK_DEV_THROTTLING_LOW +QUEUE_RW_ENTRY(blk_throtl_sample, "throttle_sample_time"); +#endif +/* legacy alias for logical_block_size: */ static struct queue_sysfs_entry queue_hw_sector_size_entry = { .attr = {.name = "hw_sector_size", .mode = 0444 }, .show = queue_logical_block_size_show, }; -static struct queue_sysfs_entry queue_logical_block_size_entry = { - .attr = {.name = "logical_block_size", .mode = 0444 }, - .show = queue_logical_block_size_show, -}; - -static struct queue_sysfs_entry queue_physical_block_size_entry = { - .attr = {.name = "physical_block_size", .mode = 0444 }, - .show = queue_physical_block_size_show, -}; - -static struct queue_sysfs_entry queue_chunk_sectors_entry = { - .attr = {.name = "chunk_sectors", .mode = 0444 }, - .show = queue_chunk_sectors_show, -}; - -static struct queue_sysfs_entry queue_io_min_entry = { - .attr = {.name = "minimum_io_size", .mode = 0444 }, - .show = queue_io_min_show, -}; - -static struct queue_sysfs_entry queue_io_opt_entry = { - .attr = {.name = "optimal_io_size", .mode = 0444 }, - .show = queue_io_opt_show, -}; - -static struct queue_sysfs_entry queue_discard_granularity_entry = { - .attr = {.name = "discard_granularity", .mode = 0444 }, - .show = queue_discard_granularity_show, -}; - -static struct queue_sysfs_entry queue_discard_max_hw_entry = { - .attr = {.name = "discard_max_hw_bytes", .mode = 0444 }, - .show = queue_discard_max_hw_show, -}; - -static struct queue_sysfs_entry queue_discard_max_entry = { - .attr = {.name = "discard_max_bytes", .mode = 0644 }, - .show = queue_discard_max_show, - .store = queue_discard_max_store, -}; - -static struct queue_sysfs_entry queue_discard_zeroes_data_entry = { - .attr = {.name = "discard_zeroes_data", .mode = 0444 }, - .show = queue_discard_zeroes_data_show, -}; - -static struct queue_sysfs_entry queue_write_same_max_entry = { - .attr = {.name = "write_same_max_bytes", .mode = 0444 }, - .show = queue_write_same_max_show, -}; - -static struct queue_sysfs_entry queue_write_zeroes_max_entry = { - .attr = {.name = "write_zeroes_max_bytes", .mode = 0444 }, - .show = queue_write_zeroes_max_show, -}; - -static struct queue_sysfs_entry queue_zone_append_max_entry = { - .attr = {.name = "zone_append_max_bytes", .mode = 0444 }, - .show = queue_zone_append_max_show, -}; - -static struct queue_sysfs_entry queue_zoned_entry = { - .attr = {.name = "zoned", .mode = 0444 }, - .show = queue_zoned_show, -}; - -static struct queue_sysfs_entry queue_nr_zones_entry = { - .attr = {.name = "nr_zones", .mode = 0444 }, - .show = queue_nr_zones_show, -}; - -static struct queue_sysfs_entry queue_max_open_zones_entry = { - .attr = {.name = "max_open_zones", .mode = 0444 }, - .show = queue_max_open_zones_show, -}; - -static struct queue_sysfs_entry queue_max_active_zones_entry = { - .attr = {.name = "max_active_zones", .mode = 0444 }, - .show = queue_max_active_zones_show, -}; - -static struct queue_sysfs_entry queue_nomerges_entry = { - .attr = {.name = "nomerges", .mode = 0644 }, - .show = queue_nomerges_show, - .store = queue_nomerges_store, -}; - -static struct queue_sysfs_entry queue_rq_affinity_entry = { - .attr = {.name = "rq_affinity", .mode = 0644 }, - .show = queue_rq_affinity_show, - .store = queue_rq_affinity_store, -}; - -static struct queue_sysfs_entry queue_poll_entry = { - .attr = {.name = "io_poll", .mode = 0644 }, - .show = queue_poll_show, - .store = queue_poll_store, -}; - -static struct queue_sysfs_entry queue_poll_delay_entry = { - .attr = {.name = "io_poll_delay", .mode = 0644 }, - .show = queue_poll_delay_show, - .store = queue_poll_delay_store, -}; - -static struct queue_sysfs_entry queue_wc_entry = { - .attr = {.name = "write_cache", .mode = 0644 }, - .show = queue_wc_show, - .store = queue_wc_store, -}; - -static struct queue_sysfs_entry queue_fua_entry = { - .attr = {.name = "fua", .mode = 0444 }, - .show = queue_fua_show, -}; - -static struct queue_sysfs_entry queue_dax_entry = { - .attr = {.name = "dax", .mode = 0444 }, - .show = queue_dax_show, -}; - -static struct queue_sysfs_entry queue_io_timeout_entry = { - .attr = {.name = "io_timeout", .mode = 0644 }, - .show = queue_io_timeout_show, - .store = queue_io_timeout_store, -}; - -static struct queue_sysfs_entry queue_wb_lat_entry = { - .attr = {.name = "wbt_lat_usec", .mode = 0644 }, - .show = queue_wb_lat_show, - .store = queue_wb_lat_store, -}; - -#ifdef CONFIG_BLK_DEV_THROTTLING_LOW -static struct queue_sysfs_entry throtl_sample_time_entry = { - .attr = {.name = "throttle_sample_time", .mode = 0644 }, - .show = blk_throtl_sample_time_show, - .store = blk_throtl_sample_time_store, -}; -#endif - static struct attribute *queue_attrs[] = { &queue_requests_entry.attr, &queue_ra_entry.attr, @@ -755,7 +623,7 @@ static struct attribute *queue_attrs[] = { &queue_max_discard_segments_entry.attr, &queue_max_integrity_segments_entry.attr, &queue_max_segment_size_entry.attr, - &queue_iosched_entry.attr, + &elv_iosched_entry.attr, &queue_hw_sector_size_entry.attr, &queue_logical_block_size_entry.attr, &queue_physical_block_size_entry.attr, @@ -786,7 +654,7 @@ static struct attribute *queue_attrs[] = { &queue_poll_delay_entry.attr, &queue_io_timeout_entry.attr, #ifdef CONFIG_BLK_DEV_THROTTLING_LOW - &throtl_sample_time_entry.attr, + &blk_throtl_sample_time_entry.attr, #endif NULL, }; From patchwork Sun Jul 26 15:03:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11685799 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 133896C1 for ; Sun, 26 Jul 2020 15:04:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F03D920759 for ; Sun, 26 Jul 2020 15:04:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="eWgKThWa" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726980AbgGZPEA (ORCPT ); Sun, 26 Jul 2020 11:04:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47350 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726911AbgGZPDz (ORCPT ); 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Sun, 26 Jul 2020 15:03:50 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Song Liu , Hans de Goede , Richard Weinberger , Minchan Kim , linux-mtd@lists.infradead.org, dm-devel@redhat.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, drbd-dev@lists.linbit.com, linux-raid@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org, Johannes Thumshirn Subject: [PATCH 09/14] bdi: remove BDI_CAP_CGROUP_WRITEBACK Date: Sun, 26 Jul 2020 17:03:28 +0200 Message-Id: <20200726150333.305527-10-hch@lst.de> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200726150333.305527-1-hch@lst.de> References: <20200726150333.305527-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Just checking SB_I_CGROUPWB for cgroup writeback support is enough. Either the file system allocates its own bdi (e.g. btrfs), in which case it is known to support cgroup writeback, or the bdi comes from the block layer, which always supports cgroup writeback. Signed-off-by: Christoph Hellwig Reviewed-by: Johannes Thumshirn --- block/blk-core.c | 1 - fs/btrfs/disk-io.c | 1 - include/linux/backing-dev.h | 8 +++----- 3 files changed, 3 insertions(+), 7 deletions(-) diff --git a/block/blk-core.c b/block/blk-core.c index ea1665de7a2079..68db7e745b49dd 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -538,7 +538,6 @@ struct request_queue *blk_alloc_queue(int node_id) if (!q->stats) goto fail_stats; - q->backing_dev_info->capabilities = BDI_CAP_CGROUP_WRITEBACK; q->node = node_id; timer_setup(&q->backing_dev_info->laptop_mode_wb_timer, diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index f92c45fe019c48..4b5a8640329e4c 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3032,7 +3032,6 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device goto fail_sb_buffer; } - sb->s_bdi->capabilities |= BDI_CAP_CGROUP_WRITEBACK; sb->s_bdi->ra_pages *= btrfs_super_num_devices(disk_super); sb->s_bdi->ra_pages = max(sb->s_bdi->ra_pages, SZ_4M / PAGE_SIZE); diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 0b06b2d26c9aa3..52583b6f2ea05d 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -123,7 +123,6 @@ int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio); * BDI_CAP_NO_ACCT_WB: Don't automatically account writeback pages * BDI_CAP_STRICTLIMIT: Keep number of dirty pages below bdi threshold. * - * BDI_CAP_CGROUP_WRITEBACK: Supports cgroup-aware writeback. * BDI_CAP_SYNCHRONOUS_IO: Device is so fast that asynchronous IO would be * inefficient. */ @@ -233,9 +232,9 @@ int inode_congested(struct inode *inode, int cong_bits); * inode_cgwb_enabled - test whether cgroup writeback is enabled on an inode * @inode: inode of interest * - * cgroup writeback requires support from both the bdi and filesystem. - * Also, both memcg and iocg have to be on the default hierarchy. Test - * whether all conditions are met. + * Cgroup writeback requires support from the filesystem. Also, both memcg and + * iocg have to be on the default hierarchy. Test whether all conditions are + * met. * * Note that the test result may change dynamically on the same inode * depending on how memcg and iocg are configured. @@ -247,7 +246,6 @@ static inline bool inode_cgwb_enabled(struct inode *inode) return cgroup_subsys_on_dfl(memory_cgrp_subsys) && cgroup_subsys_on_dfl(io_cgrp_subsys) && bdi_cap_account_dirty(bdi) && - (bdi->capabilities & BDI_CAP_CGROUP_WRITEBACK) && (inode->i_sb->s_iflags & SB_I_CGROUPWB); } From patchwork Sun Jul 26 15:03:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11685793 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F2494913 for ; Sun, 26 Jul 2020 15:04:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D2F8720791 for ; Sun, 26 Jul 2020 15:04:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="gAQdwoJR" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727016AbgGZPEB (ORCPT ); Sun, 26 Jul 2020 11:04:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47368 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726982AbgGZPEA (ORCPT ); Sun, 26 Jul 2020 11:04:00 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6BB39C0619D2; Sun, 26 Jul 2020 08:04:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=kHUw0UuZXh62UTS5LwOFYLvTBhGcGjgSBKOEDgrpN1Q=; b=gAQdwoJR0RwHOOzUGKf5gRuKJH SUHUWWRDGtONpRgQ4GZ4DRENEY2n8zVX1HjkTyAgEofsK4HmtKj2KHmPDE1ygITYavbkbsvnLBMs5 yRjBCNEB3LOCz0uXj0StMTJRp32PF7cH8kFGGa/JtdJ+BO+uLBlU8BuhBn+fnfBVNb3FYtxDOICB/ frWV31IhoAKW5wiAcoyYaW1UASRXQXd0S8deBEwbmU3FX1thsFs6lxu7Pt122QpewuVu2hHLFjTiW RITnYd5c1tkt9i4bTwV3Oj+vAwOQYgMmHKazvZBZfqGDKVhaIUuzPorP0ehEaiQHdNIEDX60PimrU m3wB6QpQ==; Received: from [2001:4bb8:18c:2acc:2375:88ff:9f84:118d] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jziBr-0005hl-Nc; Sun, 26 Jul 2020 15:03:52 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Song Liu , Hans de Goede , Richard Weinberger , Minchan Kim , linux-mtd@lists.infradead.org, dm-devel@redhat.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, drbd-dev@lists.linbit.com, linux-raid@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org Subject: [PATCH 10/14] bdi: remove BDI_CAP_SYNCHRONOUS_IO Date: Sun, 26 Jul 2020 17:03:29 +0200 Message-Id: <20200726150333.305527-11-hch@lst.de> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200726150333.305527-1-hch@lst.de> References: <20200726150333.305527-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org BDI_CAP_SYNCHRONOUS_IO is only checked in the swap code, and used to decided if ->rw_page can be used on a block device. Just check up for the method instead. The only complication is that zram needs a second set of block_device_operations as it can switch between modes that actually support ->rw_page and those who don't. Signed-off-by: Christoph Hellwig --- drivers/block/brd.c | 1 - drivers/block/zram/zram_drv.c | 19 +++++++++++++------ drivers/nvdimm/btt.c | 2 -- drivers/nvdimm/pmem.c | 1 - include/linux/backing-dev.h | 9 --------- mm/swapfile.c | 2 +- 6 files changed, 14 insertions(+), 20 deletions(-) diff --git a/drivers/block/brd.c b/drivers/block/brd.c index 2723a70eb85593..cc49a921339f77 100644 --- a/drivers/block/brd.c +++ b/drivers/block/brd.c @@ -403,7 +403,6 @@ static struct brd_device *brd_alloc(int i) disk->flags = GENHD_FL_EXT_DEVT; sprintf(disk->disk_name, "ram%d", i); set_capacity(disk, rd_size * 2); - brd->brd_queue->backing_dev_info->capabilities |= BDI_CAP_SYNCHRONOUS_IO; /* Tell the block layer that this is not a rotational device */ blk_queue_flag_set(QUEUE_FLAG_NONROT, brd->brd_queue); diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 9100ac36670afc..d73ddf018fa65f 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -52,6 +52,9 @@ static unsigned int num_devices = 1; */ static size_t huge_class_size; +static const struct block_device_operations zram_devops; +static const struct block_device_operations zram_wb_devops; + static void zram_free_page(struct zram *zram, size_t index); static int zram_bvec_read(struct zram *zram, struct bio_vec *bvec, u32 index, int offset, struct bio *bio); @@ -408,8 +411,7 @@ static void reset_bdev(struct zram *zram) zram->backing_dev = NULL; zram->old_block_size = 0; zram->bdev = NULL; - zram->disk->queue->backing_dev_info->capabilities |= - BDI_CAP_SYNCHRONOUS_IO; + zram->disk->fops = &zram_devops; kvfree(zram->bitmap); zram->bitmap = NULL; } @@ -528,8 +530,7 @@ static ssize_t backing_dev_store(struct device *dev, * freely but in fact, IO is going on so finally could cause * use-after-free when the IO is really done. */ - zram->disk->queue->backing_dev_info->capabilities &= - ~BDI_CAP_SYNCHRONOUS_IO; + zram->disk->fops = &zram_wb_devops; up_write(&zram->init_lock); pr_info("setup backing device %s\n", file_name); @@ -1819,6 +1820,13 @@ static const struct block_device_operations zram_devops = { .owner = THIS_MODULE }; +static const struct block_device_operations zram_wb_devops = { + .open = zram_open, + .submit_bio = zram_submit_bio, + .swap_slot_free_notify = zram_slot_free_notify, + .owner = THIS_MODULE +}; + static DEVICE_ATTR_WO(compact); static DEVICE_ATTR_RW(disksize); static DEVICE_ATTR_RO(initstate); @@ -1946,8 +1954,7 @@ static int zram_add(void) if (ZRAM_LOGICAL_BLOCK_SIZE == PAGE_SIZE) blk_queue_max_write_zeroes_sectors(zram->disk->queue, UINT_MAX); - zram->disk->queue->backing_dev_info->capabilities |= - (BDI_CAP_STABLE_WRITES | BDI_CAP_SYNCHRONOUS_IO); + zram->disk->queue->backing_dev_info->capabilities |= BDI_CAP_STABLE_WRITES; device_add_disk(NULL, zram->disk, zram_disk_attr_groups); strlcpy(zram->compressor, default_compressor, sizeof(zram->compressor)); diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c index 412d21d8f64351..b4184dc9b41eb4 100644 --- a/drivers/nvdimm/btt.c +++ b/drivers/nvdimm/btt.c @@ -1540,8 +1540,6 @@ static int btt_blk_init(struct btt *btt) btt->btt_disk->private_data = btt; btt->btt_disk->queue = btt->btt_queue; btt->btt_disk->flags = GENHD_FL_EXT_DEVT; - btt->btt_disk->queue->backing_dev_info->capabilities |= - BDI_CAP_SYNCHRONOUS_IO; blk_queue_logical_block_size(btt->btt_queue, btt->sector_size); blk_queue_max_hw_sectors(btt->btt_queue, UINT_MAX); diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index 94790e6e0e4ce1..436b83fb24ad61 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -478,7 +478,6 @@ static int pmem_attach_disk(struct device *dev, disk->queue = q; disk->flags = GENHD_FL_EXT_DEVT; disk->private_data = pmem; - disk->queue->backing_dev_info->capabilities |= BDI_CAP_SYNCHRONOUS_IO; nvdimm_namespace_disk_name(ndns, disk->disk_name); set_capacity(disk, (pmem->size - pmem->pfn_pad - pmem->data_offset) / 512); diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 52583b6f2ea05d..860ea33571bce5 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -122,9 +122,6 @@ int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio); * BDI_CAP_NO_WRITEBACK: Don't write pages back * BDI_CAP_NO_ACCT_WB: Don't automatically account writeback pages * BDI_CAP_STRICTLIMIT: Keep number of dirty pages below bdi threshold. - * - * BDI_CAP_SYNCHRONOUS_IO: Device is so fast that asynchronous IO would be - * inefficient. */ #define BDI_CAP_NO_ACCT_DIRTY 0x00000001 #define BDI_CAP_NO_WRITEBACK 0x00000002 @@ -132,7 +129,6 @@ int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio); #define BDI_CAP_STABLE_WRITES 0x00000008 #define BDI_CAP_STRICTLIMIT 0x00000010 #define BDI_CAP_CGROUP_WRITEBACK 0x00000020 -#define BDI_CAP_SYNCHRONOUS_IO 0x00000040 #define BDI_CAP_NO_ACCT_AND_WRITEBACK \ (BDI_CAP_NO_WRITEBACK | BDI_CAP_NO_ACCT_DIRTY | BDI_CAP_NO_ACCT_WB) @@ -174,11 +170,6 @@ static inline int wb_congested(struct bdi_writeback *wb, int cong_bits) long congestion_wait(int sync, long timeout); long wait_iff_congested(int sync, long timeout); -static inline bool bdi_cap_synchronous_io(struct backing_dev_info *bdi) -{ - return bdi->capabilities & BDI_CAP_SYNCHRONOUS_IO; -} - static inline bool bdi_cap_stable_pages_required(struct backing_dev_info *bdi) { return bdi->capabilities & BDI_CAP_STABLE_WRITES; diff --git a/mm/swapfile.c b/mm/swapfile.c index 6c26916e95fd4a..18eac97b10e502 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -3230,7 +3230,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags) if (bdi_cap_stable_pages_required(inode_to_bdi(inode))) p->flags |= SWP_STABLE_WRITES; - if (bdi_cap_synchronous_io(inode_to_bdi(inode))) + if (p->bdev && p->bdev->bd_disk->fops->rw_page) p->flags |= SWP_SYNCHRONOUS_IO; if (p->bdev && blk_queue_nonrot(bdev_get_queue(p->bdev))) { From patchwork Sun Jul 26 15:03:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11685789 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 01CF56C1 for ; 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See http://www.infradead.org/rpr.html Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org There is no point in trying to call bdev_read_page if SWP_SYNCHRONOUS_IO is not set, as the device won't support it. Signed-off-by: Christoph Hellwig --- mm/page_io.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/mm/page_io.c b/mm/page_io.c index ccda7679008851..7eef3c84766abc 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -403,15 +403,17 @@ int swap_readpage(struct page *page, bool synchronous) goto out; } - ret = bdev_read_page(sis->bdev, swap_page_sector(page), page); - if (!ret) { - if (trylock_page(page)) { - swap_slot_free_notify(page); - unlock_page(page); - } + if (sis->flags & SWP_SYNCHRONOUS_IO) { + ret = bdev_read_page(sis->bdev, swap_page_sector(page), page); + if (!ret) { + if (trylock_page(page)) { + swap_slot_free_notify(page); + unlock_page(page); + } - count_vm_event(PSWPIN); - goto out; + count_vm_event(PSWPIN); + goto out; + } } ret = 0; From patchwork Sun Jul 26 15:03:31 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11685785 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2E469913 for ; Sun, 26 Jul 2020 15:04:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0D3FD2070B for ; Sun, 26 Jul 2020 15:04:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="Dff8y0Eh" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727067AbgGZPEF (ORCPT ); Sun, 26 Jul 2020 11:04:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47378 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727044AbgGZPED (ORCPT ); Sun, 26 Jul 2020 11:04:03 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 49AD2C0619D2; Sun, 26 Jul 2020 08:04:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=wtKUyPLCDCKvIr7WCkUY7wBdMFLbdfSJ/2Zzwasg0AQ=; b=Dff8y0EhHGi2pYAuFMl3Y1Tve1 Oy6Hti/ERAsRVB4jLlx7Rk13xV7eQSB9GgHnebtchmnttazVjgMEgRPyD3L1IINDIgIF0YCzd5X/Q iwMMxhC32EsFctnWFjeeG63KsHuuX1cdlkBij3bY5grJaucFEAG7OIWDQ5BwFUw444n40UAhRaQ12 VMQjy7FC66XhL85Tu2lNxbwHYrVQgaiq5eC8PDkcRVRiv/4pO8H/+nvIWyBl9rqkAn+mOfKveLhoe hsi3BST7/VoyUrNDYG6qSnj25gX7okzq2Z++GoRyiGNjC4v47DheRKdALUliZj7a8x7hmJVtmxz3k hVhXbeAQ==; Received: from [2001:4bb8:18c:2acc:2375:88ff:9f84:118d] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jziBu-0005iH-V3; Sun, 26 Jul 2020 15:03:55 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Song Liu , Hans de Goede , Richard Weinberger , Minchan Kim , linux-mtd@lists.infradead.org, dm-devel@redhat.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, drbd-dev@lists.linbit.com, linux-raid@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org Subject: [PATCH 12/14] bdi: replace BDI_CAP_STABLE_WRITES with a queue and a sb flag Date: Sun, 26 Jul 2020 17:03:31 +0200 Message-Id: <20200726150333.305527-13-hch@lst.de> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200726150333.305527-1-hch@lst.de> References: <20200726150333.305527-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org The BDI_CAP_STABLE_WRITES is one of the few bits of information in the backing_dev_info shared between the block drivers and the writeback code. To help untangling the dependency replace it with a queue flag and a superblock flag derived from it. This also helps with the case of e.g. a file system requiring stable writes due to its own checksumming, but not forcing it on other users of the block device like the swap code. One downside is that we can't support the stable_pages_required bdi attribute in sysfs anymore. It is replaced with a queue attribute, that can also be made writable for easier testing. Signed-off-by: Christoph Hellwig --- block/blk-integrity.c | 4 ++-- block/blk-mq-debugfs.c | 1 + block/blk-sysfs.c | 2 ++ drivers/block/rbd.c | 2 +- drivers/block/zram/zram_drv.c | 2 +- drivers/md/dm-table.c | 6 +++--- drivers/md/raid5.c | 8 ++++---- drivers/mmc/core/queue.c | 3 +-- drivers/nvme/host/core.c | 3 +-- drivers/nvme/host/multipath.c | 10 +++------- drivers/scsi/iscsi_tcp.c | 4 ++-- fs/super.c | 2 ++ include/linux/backing-dev.h | 6 ------ include/linux/blkdev.h | 3 +++ include/linux/fs.h | 1 + mm/backing-dev.c | 6 ++---- mm/page-writeback.c | 2 +- mm/swapfile.c | 2 +- 18 files changed, 31 insertions(+), 36 deletions(-) diff --git a/block/blk-integrity.c b/block/blk-integrity.c index c03705cbb9c9f2..2b36a8f9b81390 100644 --- a/block/blk-integrity.c +++ b/block/blk-integrity.c @@ -408,7 +408,7 @@ void blk_integrity_register(struct gendisk *disk, struct blk_integrity *template bi->tuple_size = template->tuple_size; bi->tag_size = template->tag_size; - disk->queue->backing_dev_info->capabilities |= BDI_CAP_STABLE_WRITES; + blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, disk->queue); #ifdef CONFIG_BLK_INLINE_ENCRYPTION if (disk->queue->ksm) { @@ -428,7 +428,7 @@ EXPORT_SYMBOL(blk_integrity_register); */ void blk_integrity_unregister(struct gendisk *disk) { - disk->queue->backing_dev_info->capabilities &= ~BDI_CAP_STABLE_WRITES; + blk_queue_flag_clear(QUEUE_FLAG_STABLE_WRITES, disk->queue); memset(&disk->queue->integrity, 0, sizeof(struct blk_integrity)); } EXPORT_SYMBOL(blk_integrity_unregister); diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c index 3f09bcb8a6fd7e..5a7d870eff2f89 100644 --- a/block/blk-mq-debugfs.c +++ b/block/blk-mq-debugfs.c @@ -116,6 +116,7 @@ static const char *const blk_queue_flag_name[] = { QUEUE_FLAG_NAME(SAME_FORCE), QUEUE_FLAG_NAME(DEAD), QUEUE_FLAG_NAME(INIT_DONE), + QUEUE_FLAG_NAME(STABLE_WRITES), QUEUE_FLAG_NAME(POLL), QUEUE_FLAG_NAME(WC), QUEUE_FLAG_NAME(FUA), diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 9bb4e42fb73265..4a3799ed33f775 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -291,6 +291,7 @@ static struct queue_sysfs_entry queue_##_name##_entry = { \ QUEUE_SYSFS_BIT_FNS(nonrot, NONROT, 1); QUEUE_SYSFS_BIT_FNS(random, ADD_RANDOM, 0); QUEUE_SYSFS_BIT_FNS(iostats, IO_STAT, 0); +QUEUE_SYSFS_BIT_FNS(stable_writes, STABLE_WRITES, 0); #undef QUEUE_SYSFS_BIT_FNS static ssize_t queue_zoned_show(struct request_queue *q, char *page) @@ -645,6 +646,7 @@ static struct attribute *queue_attrs[] = { &queue_nomerges_entry.attr, &queue_rq_affinity_entry.attr, &queue_iostats_entry.attr, + &queue_stable_writes_entry.attr, &queue_random_entry.attr, &queue_poll_entry.attr, &queue_wc_entry.attr, diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 4f61e920946144..4a8515acccb3bf 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -5022,7 +5022,7 @@ static int rbd_init_disk(struct rbd_device *rbd_dev) } if (!ceph_test_opt(rbd_dev->rbd_client->client, NOCRC)) - q->backing_dev_info->capabilities |= BDI_CAP_STABLE_WRITES; + blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, q); /* * disk_release() expects a queue ref from add_disk() and will diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index d73ddf018fa65f..e6ed9c9f500a42 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -1954,7 +1954,7 @@ static int zram_add(void) if (ZRAM_LOGICAL_BLOCK_SIZE == PAGE_SIZE) blk_queue_max_write_zeroes_sectors(zram->disk->queue, UINT_MAX); - zram->disk->queue->backing_dev_info->capabilities |= BDI_CAP_STABLE_WRITES; + blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, zram->disk->queue); device_add_disk(NULL, zram->disk, zram_disk_attr_groups); strlcpy(zram->compressor, default_compressor, sizeof(zram->compressor)); diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 324a42ed2f8894..e1adec51cb5b41 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -1815,7 +1815,7 @@ static int device_requires_stable_pages(struct dm_target *ti, { struct request_queue *q = bdev_get_queue(dev->bdev); - return q && bdi_cap_stable_pages_required(q->backing_dev_info); + return q && blk_queue_stable_writes(q); } /* @@ -1900,9 +1900,9 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, * because they do their own checksumming. */ if (dm_table_requires_stable_pages(t)) - q->backing_dev_info->capabilities |= BDI_CAP_STABLE_WRITES; + blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, q); else - q->backing_dev_info->capabilities &= ~BDI_CAP_STABLE_WRITES; + blk_queue_flag_clear(QUEUE_FLAG_STABLE_WRITES, q); /* * Determine whether or not this queue's I/O timings contribute diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 415ce3cc155698..eb1d9e0a6ef92f 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -6536,14 +6536,14 @@ raid5_store_skip_copy(struct mddev *mddev, const char *page, size_t len) if (!conf) err = -ENODEV; else if (new != conf->skip_copy) { + struct request_queue *q = mddev->queue; + mddev_suspend(mddev); conf->skip_copy = new; if (new) - mddev->queue->backing_dev_info->capabilities |= - BDI_CAP_STABLE_WRITES; + blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, q); else - mddev->queue->backing_dev_info->capabilities &= - ~BDI_CAP_STABLE_WRITES; + blk_queue_flag_clear(QUEUE_FLAG_STABLE_WRITES, q); mddev_resume(mddev); } mddev_unlock(mddev); diff --git a/drivers/mmc/core/queue.c b/drivers/mmc/core/queue.c index 4b1eb89b401d98..e789107c32a18d 100644 --- a/drivers/mmc/core/queue.c +++ b/drivers/mmc/core/queue.c @@ -472,8 +472,7 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card) } if (mmc_host_is_spi(host) && host->use_spi_crc) - mq->queue->backing_dev_info->capabilities |= - BDI_CAP_STABLE_WRITES; + blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, mq->queue); mq->queue->queuedata = mq; blk_queue_rq_timeout(mq->queue, 60 * HZ); diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index aa2b66edba5e01..d0970da9edee4a 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -3836,8 +3836,7 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid) goto out_free_ns; if (ctrl->opts && ctrl->opts->data_digest) - ns->queue->backing_dev_info->capabilities - |= BDI_CAP_STABLE_WRITES; + blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, ns->queue); blk_queue_flag_set(QUEUE_FLAG_NONROT, ns->queue); if (ctrl->ops->flags & NVME_F_PCI_P2PDMA) diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c index 74bad4e3d37785..c3688e4b59f383 100644 --- a/drivers/nvme/host/multipath.c +++ b/drivers/nvme/host/multipath.c @@ -669,13 +669,9 @@ void nvme_mpath_add_disk(struct nvme_ns *ns, struct nvme_id_ns *id) nvme_mpath_set_live(ns); } - if (bdi_cap_stable_pages_required(ns->queue->backing_dev_info)) { - struct gendisk *disk = ns->head->disk; - - if (disk) - disk->queue->backing_dev_info->capabilities |= - BDI_CAP_STABLE_WRITES; - } + if (blk_queue_stable_writes(ns->queue) && ns->head->disk) + blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, + ns->head->disk->queue); } void nvme_mpath_remove_disk(struct nvme_ns_head *head) diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c index b5dd1caae5e92d..a622f334c933f5 100644 --- a/drivers/scsi/iscsi_tcp.c +++ b/drivers/scsi/iscsi_tcp.c @@ -962,8 +962,8 @@ static int iscsi_sw_tcp_slave_configure(struct scsi_device *sdev) struct iscsi_conn *conn = session->leadconn; if (conn->datadgst_en) - sdev->request_queue->backing_dev_info->capabilities - |= BDI_CAP_STABLE_WRITES; + blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, + sdev->request_queue); blk_queue_dma_alignment(sdev->request_queue, 0); return 0; } diff --git a/fs/super.c b/fs/super.c index 904459b3511995..a51c2083cd6b18 100644 --- a/fs/super.c +++ b/fs/super.c @@ -1256,6 +1256,8 @@ static int set_bdev_super(struct super_block *s, void *data) s->s_dev = s->s_bdev->bd_dev; s->s_bdi = bdi_get(s->s_bdev->bd_bdi); + if (blk_queue_stable_writes(s->s_bdev->bd_disk->queue)) + s->s_iflags |= SB_I_STABLE_WRITES; return 0; } diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 860ea33571bce5..5da4ea3dd0cc5c 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -126,7 +126,6 @@ int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio); #define BDI_CAP_NO_ACCT_DIRTY 0x00000001 #define BDI_CAP_NO_WRITEBACK 0x00000002 #define BDI_CAP_NO_ACCT_WB 0x00000004 -#define BDI_CAP_STABLE_WRITES 0x00000008 #define BDI_CAP_STRICTLIMIT 0x00000010 #define BDI_CAP_CGROUP_WRITEBACK 0x00000020 @@ -170,11 +169,6 @@ static inline int wb_congested(struct bdi_writeback *wb, int cong_bits) long congestion_wait(int sync, long timeout); long wait_iff_congested(int sync, long timeout); -static inline bool bdi_cap_stable_pages_required(struct backing_dev_info *bdi) -{ - return bdi->capabilities & BDI_CAP_STABLE_WRITES; -} - static inline bool bdi_cap_writeback_dirty(struct backing_dev_info *bdi) { return !(bdi->capabilities & BDI_CAP_NO_WRITEBACK); diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index bbdd3cf620381a..c313a1df01e6b1 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -603,6 +603,7 @@ struct request_queue { #define QUEUE_FLAG_SAME_FORCE 12 /* force complete on same CPU */ #define QUEUE_FLAG_DEAD 13 /* queue tear-down finished */ #define QUEUE_FLAG_INIT_DONE 14 /* queue is initialized */ +#define QUEUE_FLAG_STABLE_WRITES 15 /* don't modify blks until WB is done */ #define QUEUE_FLAG_POLL 16 /* IO polling enabled if set */ #define QUEUE_FLAG_WC 17 /* Write back caching */ #define QUEUE_FLAG_FUA 18 /* device supports FUA writes */ @@ -631,6 +632,8 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q); #define blk_queue_noxmerges(q) \ test_bit(QUEUE_FLAG_NOXMERGES, &(q)->queue_flags) #define blk_queue_nonrot(q) test_bit(QUEUE_FLAG_NONROT, &(q)->queue_flags) +#define blk_queue_stable_writes(q) \ + test_bit(QUEUE_FLAG_STABLE_WRITES, &(q)->queue_flags) #define blk_queue_io_stat(q) test_bit(QUEUE_FLAG_IO_STAT, &(q)->queue_flags) #define blk_queue_add_random(q) test_bit(QUEUE_FLAG_ADD_RANDOM, &(q)->queue_flags) #define blk_queue_discard(q) test_bit(QUEUE_FLAG_DISCARD, &(q)->queue_flags) diff --git a/include/linux/fs.h b/include/linux/fs.h index 236543605dd118..d383c21f3c0971 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1366,6 +1366,7 @@ extern int send_sigurg(struct fown_struct *fown); #define SB_I_CGROUPWB 0x00000001 /* cgroup-aware writeback enabled */ #define SB_I_NOEXEC 0x00000002 /* Ignore executables on this fs */ #define SB_I_NODEV 0x00000004 /* Ignore devices on this fs */ +#define SB_I_STABLE_WRITES 0x00000008 /* don't modify blks until WB is done */ /* sb->s_iflags to limit user namespace mounts */ #define SB_I_USERNS_VISIBLE 0x00000010 /* fstype already mounted */ diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 3e441e0ff1bc88..41ec322090fca6 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -204,10 +204,8 @@ static ssize_t stable_pages_required_show(struct device *dev, struct device_attribute *attr, char *page) { - struct backing_dev_info *bdi = dev_get_drvdata(dev); - - return snprintf(page, PAGE_SIZE-1, "%d\n", - bdi_cap_stable_pages_required(bdi) ? 1 : 0); + pr_info_once("the stable_pages_required attribute has been deprecated\n"); + return snprintf(page, PAGE_SIZE-1, "%d\n", 0); } static DEVICE_ATTR_RO(stable_pages_required); diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 28b3e7a6756577..27a10536adad30 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2851,7 +2851,7 @@ EXPORT_SYMBOL_GPL(wait_on_page_writeback); */ void wait_for_stable_page(struct page *page) { - if (bdi_cap_stable_pages_required(inode_to_bdi(page->mapping->host))) + if (page->mapping->host->i_sb->s_iflags & SB_I_STABLE_WRITES) wait_on_page_writeback(page); } EXPORT_SYMBOL_GPL(wait_for_stable_page); diff --git a/mm/swapfile.c b/mm/swapfile.c index 18eac97b10e502..e2a589faad28cb 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -3227,7 +3227,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags) goto bad_swap_unlock_inode; } - if (bdi_cap_stable_pages_required(inode_to_bdi(inode))) + if (p->bdev && blk_queue_stable_writes(p->bdev->bd_disk->queue)) p->flags |= SWP_STABLE_WRITES; if (p->bdev && p->bdev->bd_disk->fops->rw_page) From patchwork Sun Jul 26 15:03:32 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11685781 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CA5996C1 for ; Sun, 26 Jul 2020 15:04:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B1643206D8 for ; Sun, 26 Jul 2020 15:04:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="f3UgfQ8h" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727101AbgGZPEH (ORCPT ); Sun, 26 Jul 2020 11:04:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47386 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727087AbgGZPEG (ORCPT ); Sun, 26 Jul 2020 11:04:06 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C1A97C0619D2; Sun, 26 Jul 2020 08:04:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=Ho/bGRY9X7egSzlAdmNPDZqSIrHRov0jTdazhq1mANU=; b=f3UgfQ8hLhGRKnEIcJIF6+Ug/p ZgWSVLXO6534ZWjGSn/d3M3QSUbS0dntzRSnV8WNnVc+D2wK94i4BW7CwRbGEI2RCXTgUOcFO9qYe EyQfI79XsNrDhwVWvkakECIgrtTQayZv+o9AEnmWjhpZhCmDGgb+N1oBq8pjz12N5UnxAMTaZFlpN X4UREkRIUPFKbFSWzTPRQ4epEHQB9CuZY12Vgl+qvMZoQWAzhqfTMoADAJxRAu3wm2tm5drlkLYj/ XA6dY1GlaDm7NJkrPEyY3XpMBTDKORCRAPttlE1Iw5WB4lns0dHoNs/IOEZ3BMJN55MUXwVKr3uPb zAA/qlGA==; Received: from [2001:4bb8:18c:2acc:2375:88ff:9f84:118d] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jziBx-0005iq-6t; Sun, 26 Jul 2020 15:03:57 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Song Liu , Hans de Goede , Richard Weinberger , Minchan Kim , linux-mtd@lists.infradead.org, dm-devel@redhat.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, drbd-dev@lists.linbit.com, linux-raid@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org Subject: [PATCH 13/14] bdi: invert BDI_CAP_NO_ACCT_WB Date: Sun, 26 Jul 2020 17:03:32 +0200 Message-Id: <20200726150333.305527-14-hch@lst.de> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200726150333.305527-1-hch@lst.de> References: <20200726150333.305527-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Replace BDI_CAP_NO_ACCT_WB with a positive BDI_CAP_WRITEBACK_ACCT to make the checks more obvious. Also remove the pointless bdi_cap_account_writeback wrapper that just obsfucates the check. Signed-off-by: Christoph Hellwig --- fs/fuse/inode.c | 3 ++- include/linux/backing-dev.h | 13 +++---------- mm/backing-dev.c | 1 + mm/page-writeback.c | 4 ++-- 4 files changed, 8 insertions(+), 13 deletions(-) diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 17b00670fb539e..581329203d6860 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -1050,7 +1050,8 @@ static int fuse_bdi_init(struct fuse_conn *fc, struct super_block *sb) return err; /* fuse does it's own writeback accounting */ - sb->s_bdi->capabilities = BDI_CAP_NO_ACCT_WB | BDI_CAP_STRICTLIMIT; + sb->s_bdi->capabilities &= ~BDI_CAP_WRITEBACK_ACCT; + sb->s_bdi->capabilities |= BDI_CAP_STRICTLIMIT; /* * For a single fuse filesystem use max 1% of dirty + diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 5da4ea3dd0cc5c..b217344a2c63be 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -120,17 +120,17 @@ int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio); * * BDI_CAP_NO_ACCT_DIRTY: Dirty pages shouldn't contribute to accounting * BDI_CAP_NO_WRITEBACK: Don't write pages back - * BDI_CAP_NO_ACCT_WB: Don't automatically account writeback pages + * BDI_CAP_WRITEBACK_ACCT: Automatically account writeback pages * BDI_CAP_STRICTLIMIT: Keep number of dirty pages below bdi threshold. */ #define BDI_CAP_NO_ACCT_DIRTY 0x00000001 #define BDI_CAP_NO_WRITEBACK 0x00000002 -#define BDI_CAP_NO_ACCT_WB 0x00000004 +#define BDI_CAP_WRITEBACK_ACCT 0x00000004 #define BDI_CAP_STRICTLIMIT 0x00000010 #define BDI_CAP_CGROUP_WRITEBACK 0x00000020 #define BDI_CAP_NO_ACCT_AND_WRITEBACK \ - (BDI_CAP_NO_WRITEBACK | BDI_CAP_NO_ACCT_DIRTY | BDI_CAP_NO_ACCT_WB) + (BDI_CAP_NO_WRITEBACK | BDI_CAP_NO_ACCT_DIRTY) extern struct backing_dev_info noop_backing_dev_info; @@ -179,13 +179,6 @@ static inline bool bdi_cap_account_dirty(struct backing_dev_info *bdi) return !(bdi->capabilities & BDI_CAP_NO_ACCT_DIRTY); } -static inline bool bdi_cap_account_writeback(struct backing_dev_info *bdi) -{ - /* Paranoia: BDI_CAP_NO_WRITEBACK implies BDI_CAP_NO_ACCT_WB */ - return !(bdi->capabilities & (BDI_CAP_NO_ACCT_WB | - BDI_CAP_NO_WRITEBACK)); -} - static inline bool mapping_cap_writeback_dirty(struct address_space *mapping) { return bdi_cap_writeback_dirty(inode_to_bdi(mapping->host)); diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 41ec322090fca6..5f5958e1d39060 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -744,6 +744,7 @@ struct backing_dev_info *bdi_alloc(int node_id) kfree(bdi); return NULL; } + bdi->capabilities = BDI_CAP_WRITEBACK_ACCT; bdi->ra_pages = VM_READAHEAD_PAGES; return bdi; } diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 27a10536adad30..44c4a588f48df5 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2740,7 +2740,7 @@ int test_clear_page_writeback(struct page *page) if (ret) { __xa_clear_mark(&mapping->i_pages, page_index(page), PAGECACHE_TAG_WRITEBACK); - if (bdi_cap_account_writeback(bdi)) { + if (bdi->capabilities & BDI_CAP_WRITEBACK_ACCT) { struct bdi_writeback *wb = inode_to_wb(inode); dec_wb_stat(wb, WB_WRITEBACK); @@ -2793,7 +2793,7 @@ int __test_set_page_writeback(struct page *page, bool keep_write) PAGECACHE_TAG_WRITEBACK); xas_set_mark(&xas, PAGECACHE_TAG_WRITEBACK); - if (bdi_cap_account_writeback(bdi)) + if (bdi->capabilities & BDI_CAP_WRITEBACK_ACCT) inc_wb_stat(inode_to_wb(inode), WB_WRITEBACK); /* From patchwork Sun Jul 26 15:03:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11685777 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D4435913 for ; Sun, 26 Jul 2020 15:04:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B325020789 for ; Sun, 26 Jul 2020 15:04:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="qa7ezBvU" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727798AbgGZPES (ORCPT ); Sun, 26 Jul 2020 11:04:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47392 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727115AbgGZPEI (ORCPT ); Sun, 26 Jul 2020 11:04:08 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0A47AC0619D2; Sun, 26 Jul 2020 08:04:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=PUvPGMWnRdKo1i7fPR0B32QodnstGhqM7aWSC48rmWA=; b=qa7ezBvUh8f8V47FTQodaFe3FY 82h24WdFd+D2+2Ei2CUOVmkW/j8TjtFhzavdROSAZhcdk5M3HDNoGDfjrEKdnx8YUOB1ykKld2OkP D/nEVWG9sg2Q6r1Thx1U/5y+in3Y07VTkz4x2PCw/ps96s72ubZEjsQkT/SxmukaHflnTQNldCphZ l/K7G156YnwFA4atB67Zo2ryxvGaQRu2tkycwsChv/r8qamgFaLUTub5ekzYSXnd8wwSjqn4j+lpj Hl2yjPuiMlg/dDcW1eJOFDGGdc5miS7gdcxAE6E9jdNfCGVahnNKj59IopPzc23ECQQfLa12DC+Rc Zoxd5ZeA==; Received: from [2001:4bb8:18c:2acc:2375:88ff:9f84:118d] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jziC0-0005je-3I; Sun, 26 Jul 2020 15:04:01 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Song Liu , Hans de Goede , Richard Weinberger , Minchan Kim , linux-mtd@lists.infradead.org, dm-devel@redhat.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, drbd-dev@lists.linbit.com, linux-raid@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org Subject: [PATCH 14/14] bdi: replace BDI_CAP_NO_{WRITEBACK,ACCT_DIRTY} with a single flag Date: Sun, 26 Jul 2020 17:03:33 +0200 Message-Id: <20200726150333.305527-15-hch@lst.de> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200726150333.305527-1-hch@lst.de> References: <20200726150333.305527-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Replace the two negative flags that are always used together with a single positive flag that indicates the writeback capability instead of two related non-capabilities. Also remove the pointless wrappers to just check the flag. Signed-off-by: Christoph Hellwig --- fs/9p/vfs_file.c | 2 +- fs/fs-writeback.c | 7 +++--- include/linux/backing-dev.h | 48 ++++++++----------------------------- mm/backing-dev.c | 6 ++--- mm/filemap.c | 4 ++-- mm/memcontrol.c | 2 +- mm/memory-failure.c | 2 +- mm/migrate.c | 2 +- mm/mmap.c | 2 +- mm/page-writeback.c | 12 +++++----- 10 files changed, 29 insertions(+), 58 deletions(-) diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index 92cd1d80218d70..5479d894a10696 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -625,7 +625,7 @@ static void v9fs_mmap_vm_close(struct vm_area_struct *vma) inode = file_inode(vma->vm_file); - if (!mapping_cap_writeback_dirty(inode->i_mapping)) + if (!mapping_can_writeback(inode->i_mapping)) wbc.nr_to_write = 0; might_sleep(); diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index a605c3dddabc76..e62e48fecff4f9 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -2318,7 +2318,7 @@ void __mark_inode_dirty(struct inode *inode, int flags) wb = locked_inode_to_wb_and_lock_list(inode); - WARN(bdi_cap_writeback_dirty(wb->bdi) && + WARN((wb->bdi->capabilities & BDI_CAP_WRITEBACK) && !test_bit(WB_registered, &wb->state), "bdi-%s not registered\n", bdi_dev_name(wb->bdi)); @@ -2343,7 +2343,8 @@ void __mark_inode_dirty(struct inode *inode, int flags) * to make sure background write-back happens * later. */ - if (bdi_cap_writeback_dirty(wb->bdi) && wakeup_bdi) + if (wakeup_bdi && + (wb->bdi->capabilities & BDI_CAP_WRITEBACK)) wb_wakeup_delayed(wb); return; } @@ -2578,7 +2579,7 @@ int write_inode_now(struct inode *inode, int sync) .range_end = LLONG_MAX, }; - if (!mapping_cap_writeback_dirty(inode->i_mapping)) + if (!mapping_can_writeback(inode->i_mapping)) wbc.nr_to_write = 0; might_sleep(); diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index b217344a2c63be..44df4fcef65c1e 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -110,27 +110,14 @@ int bdi_set_max_ratio(struct backing_dev_info *bdi, unsigned int max_ratio); /* * Flags in backing_dev_info::capability * - * The first three flags control whether dirty pages will contribute to the - * VM's accounting and whether writepages() should be called for dirty pages - * (something that would not, for example, be appropriate for ramfs) - * - * WARNING: these flags are closely related and should not normally be - * used separately. The BDI_CAP_NO_ACCT_AND_WRITEBACK combines these - * three flags into a single convenience macro. - * - * BDI_CAP_NO_ACCT_DIRTY: Dirty pages shouldn't contribute to accounting - * BDI_CAP_NO_WRITEBACK: Don't write pages back - * BDI_CAP_WRITEBACK_ACCT: Automatically account writeback pages - * BDI_CAP_STRICTLIMIT: Keep number of dirty pages below bdi threshold. + * BDI_CAP_WRITEBACK: Supports dirty page writeback, and dirty pages + * should contribute to accounting + * BDI_CAP_WRITEBACK_ACCT: Automatically account writeback pages + * BDI_CAP_STRICTLIMIT: Keep number of dirty pages below bdi threshold */ -#define BDI_CAP_NO_ACCT_DIRTY 0x00000001 -#define BDI_CAP_NO_WRITEBACK 0x00000002 -#define BDI_CAP_WRITEBACK_ACCT 0x00000004 -#define BDI_CAP_STRICTLIMIT 0x00000010 -#define BDI_CAP_CGROUP_WRITEBACK 0x00000020 - -#define BDI_CAP_NO_ACCT_AND_WRITEBACK \ - (BDI_CAP_NO_WRITEBACK | BDI_CAP_NO_ACCT_DIRTY) +#define BDI_CAP_WRITEBACK (1 << 0) +#define BDI_CAP_WRITEBACK_ACCT (1 << 1) +#define BDI_CAP_STRICTLIMIT (1 << 2) extern struct backing_dev_info noop_backing_dev_info; @@ -169,24 +156,9 @@ static inline int wb_congested(struct bdi_writeback *wb, int cong_bits) long congestion_wait(int sync, long timeout); long wait_iff_congested(int sync, long timeout); -static inline bool bdi_cap_writeback_dirty(struct backing_dev_info *bdi) -{ - return !(bdi->capabilities & BDI_CAP_NO_WRITEBACK); -} - -static inline bool bdi_cap_account_dirty(struct backing_dev_info *bdi) -{ - return !(bdi->capabilities & BDI_CAP_NO_ACCT_DIRTY); -} - -static inline bool mapping_cap_writeback_dirty(struct address_space *mapping) -{ - return bdi_cap_writeback_dirty(inode_to_bdi(mapping->host)); -} - -static inline bool mapping_cap_account_dirty(struct address_space *mapping) +static inline bool mapping_can_writeback(struct address_space *mapping) { - return bdi_cap_account_dirty(inode_to_bdi(mapping->host)); + return inode_to_bdi(mapping->host)->capabilities & BDI_CAP_WRITEBACK; } static inline int bdi_sched_wait(void *word) @@ -223,7 +195,7 @@ static inline bool inode_cgwb_enabled(struct inode *inode) return cgroup_subsys_on_dfl(memory_cgrp_subsys) && cgroup_subsys_on_dfl(io_cgrp_subsys) && - bdi_cap_account_dirty(bdi) && + (bdi->capabilities & BDI_CAP_WRITEBACK) && (inode->i_sb->s_iflags & SB_I_CGROUPWB); } diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 5f5958e1d39060..01bd0a4f16096a 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -14,9 +14,7 @@ #include #include -struct backing_dev_info noop_backing_dev_info = { - .capabilities = BDI_CAP_NO_ACCT_AND_WRITEBACK, -}; +struct backing_dev_info noop_backing_dev_info; EXPORT_SYMBOL_GPL(noop_backing_dev_info); static struct class *bdi_class; @@ -744,7 +742,7 @@ struct backing_dev_info *bdi_alloc(int node_id) kfree(bdi); return NULL; } - bdi->capabilities = BDI_CAP_WRITEBACK_ACCT; + bdi->capabilities = BDI_CAP_WRITEBACK | BDI_CAP_WRITEBACK_ACCT; bdi->ra_pages = VM_READAHEAD_PAGES; return bdi; } diff --git a/mm/filemap.c b/mm/filemap.c index 385759c4ce4be6..89ebadcfecf8e5 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -413,7 +413,7 @@ int __filemap_fdatawrite_range(struct address_space *mapping, loff_t start, .range_end = end, }; - if (!mapping_cap_writeback_dirty(mapping) || + if (!mapping_can_writeback(mapping) || !mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) return 0; @@ -1634,7 +1634,7 @@ struct page *pagecache_get_page(struct address_space *mapping, pgoff_t index, no_page: if (!page && (fgp_flags & FGP_CREAT)) { int err; - if ((fgp_flags & FGP_WRITE) && mapping_cap_account_dirty(mapping)) + if ((fgp_flags & FGP_WRITE) && mapping_can_writeback(mapping)) gfp_mask |= __GFP_WRITE; if (fgp_flags & FGP_NOFS) gfp_mask &= ~__GFP_FS; diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 19622328e4b5ac..cb2f1840481f57 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -5419,7 +5419,7 @@ static int mem_cgroup_move_account(struct page *page, if (PageDirty(page)) { struct address_space *mapping = page_mapping(page); - if (mapping_cap_account_dirty(mapping)) { + if (mapping_can_writeback(mapping)) { __mod_lruvec_state(from_vec, NR_FILE_DIRTY, -nr_pages); __mod_lruvec_state(to_vec, NR_FILE_DIRTY, diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 47b8ccb1fb9b85..012e0d315b1f90 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1006,7 +1006,7 @@ static bool hwpoison_user_mappings(struct page *p, unsigned long pfn, */ mapping = page_mapping(hpage); if (!(flags & MF_MUST_KILL) && !PageDirty(hpage) && mapping && - mapping_cap_writeback_dirty(mapping)) { + mapping_can_writeback(mapping)) { if (page_mkclean(hpage)) { SetPageDirty(hpage); } else { diff --git a/mm/migrate.c b/mm/migrate.c index 40cd7016ae6fc6..7e2cafa06428f3 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -503,7 +503,7 @@ int migrate_page_move_mapping(struct address_space *mapping, __dec_lruvec_state(old_lruvec, NR_SHMEM); __inc_lruvec_state(new_lruvec, NR_SHMEM); } - if (dirty && mapping_cap_account_dirty(mapping)) { + if (dirty && mapping_can_writeback(mapping)) { __dec_node_state(oldzone->zone_pgdat, NR_FILE_DIRTY); __dec_zone_state(oldzone, NR_ZONE_WRITE_PENDING); __inc_node_state(newzone->zone_pgdat, NR_FILE_DIRTY); diff --git a/mm/mmap.c b/mm/mmap.c index 59a4682ebf3fae..3efb7ae6447fd9 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1665,7 +1665,7 @@ int vma_wants_writenotify(struct vm_area_struct *vma, pgprot_t vm_page_prot) /* Can the mapping track the dirty pages? */ return vma->vm_file && vma->vm_file->f_mapping && - mapping_cap_account_dirty(vma->vm_file->f_mapping); + mapping_can_writeback(vma->vm_file->f_mapping); } /* diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 44c4a588f48df5..ad288f1b3052fe 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -1882,7 +1882,7 @@ void balance_dirty_pages_ratelimited(struct address_space *mapping) int ratelimit; int *p; - if (!bdi_cap_account_dirty(bdi)) + if (!(bdi->capabilities & BDI_CAP_WRITEBACK)) return; if (inode_cgwb_enabled(inode)) @@ -2425,7 +2425,7 @@ void account_page_dirtied(struct page *page, struct address_space *mapping) trace_writeback_dirty_page(page, mapping); - if (mapping_cap_account_dirty(mapping)) { + if (mapping_can_writeback(mapping)) { struct bdi_writeback *wb; inode_attach_wb(inode, page); @@ -2452,7 +2452,7 @@ void account_page_dirtied(struct page *page, struct address_space *mapping) void account_page_cleaned(struct page *page, struct address_space *mapping, struct bdi_writeback *wb) { - if (mapping_cap_account_dirty(mapping)) { + if (mapping_can_writeback(mapping)) { dec_lruvec_page_state(page, NR_FILE_DIRTY); dec_zone_page_state(page, NR_ZONE_WRITE_PENDING); dec_wb_stat(wb, WB_RECLAIMABLE); @@ -2515,7 +2515,7 @@ void account_page_redirty(struct page *page) { struct address_space *mapping = page->mapping; - if (mapping && mapping_cap_account_dirty(mapping)) { + if (mapping && mapping_can_writeback(mapping)) { struct inode *inode = mapping->host; struct bdi_writeback *wb; struct wb_lock_cookie cookie = {}; @@ -2627,7 +2627,7 @@ void __cancel_dirty_page(struct page *page) { struct address_space *mapping = page_mapping(page); - if (mapping_cap_account_dirty(mapping)) { + if (mapping_can_writeback(mapping)) { struct inode *inode = mapping->host; struct bdi_writeback *wb; struct wb_lock_cookie cookie = {}; @@ -2667,7 +2667,7 @@ int clear_page_dirty_for_io(struct page *page) VM_BUG_ON_PAGE(!PageLocked(page), page); - if (mapping && mapping_cap_account_dirty(mapping)) { + if (mapping && mapping_can_writeback(mapping)) { struct inode *inode = mapping->host; struct bdi_writeback *wb; struct wb_lock_cookie cookie = {};