From patchwork Thu Jun 27 20:39:49 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tejun Heo X-Patchwork-Id: 11020497 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1F5CA14BB for ; Thu, 27 Jun 2019 20:40:24 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 15EF2285BD for ; Thu, 27 Jun 2019 20:40:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0A49528706; Thu, 27 Jun 2019 20:40:24 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6E096285BD for ; Thu, 27 Jun 2019 20:40:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726766AbfF0UkE (ORCPT ); Thu, 27 Jun 2019 16:40:04 -0400 Received: from mail-qk1-f194.google.com ([209.85.222.194]:36304 "EHLO mail-qk1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726463AbfF0UkD (ORCPT ); Thu, 27 Jun 2019 16:40:03 -0400 Received: by mail-qk1-f194.google.com with SMTP id g18so2980084qkl.3; Thu, 27 Jun 2019 13:40:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=Z9P+uDMVPtBfoUAIKs3Fmsc6yAaDVnxFpK1kJ0YpSOA=; b=ANDxW4Dbui2Z3jjmv+vdQpYyZbSpd+mGmM6YnuYtYMfJ/smE9j4QuHgSfPsXmm4DRS PxLeC3UIGKpSw6M0BPXhSVRtjXBc+IhgRR/2RRiGbqGJMyu69u+5JuEhCwxmSfMIy/h+ LzfGho08ZfEGzKTsRQMhF1RjsDv/6hMHs3nURck1OY2rpCgSUN1jXJ+uyvnG7Z5qtnbc ie0m5KZpBzNzps1JDwhLkzxCh4QYUVGYeoO7v5NFi2lAUqyClZRflNMmBLgyWmayDNt/ EMrE02F3y+LX8qakM1RImLDdAFFo4GAQ5NuqdqZgbLhY0BknwZCgxLmItqK+vdGqhESY Ms0Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references; bh=Z9P+uDMVPtBfoUAIKs3Fmsc6yAaDVnxFpK1kJ0YpSOA=; b=mRiak0l/GXXkZRGbPFZTAlIClPpsyxLRWYtzHYZXOMBdhhWJw1Vb4qFm+zn0RhcPJ3 H21qEhVxfasC8i1zVziQCSGjSSDYOIlgF+wJ2ttHxenUwre6Xa80bA1d5NhrONiga+gr ddlgln4NiDvmOJ1pqJZQgJugPW71HKgSqTevHzq5xSl8rU3MH4OFu5gaqhwF1CfT/53k tdDrsVL2zTWR0m8pXlyyMVqH8UaqDco990Y08J/8nPQk69KzClQA/LkNoQAr5C6oHejW 98jDGK7zhLaCjf4YdQGOkvkwE7rB7MnwKNTMuBGKD3Jc0kKLNSu703xqdktv6bQNFIGP SfWA== X-Gm-Message-State: APjAAAU+Gkrx8ztAfUd0IqjU40fYMDcGUB60bA+nWHGvDr7Tsu6dSHH5 iSSAL2M91tLyLwJAW8DkinY= X-Google-Smtp-Source: APXvYqw4fIESsqhpVDnxupIdT9Tu57hFl4bvw0OD6fCF3vrvisYnJs8hzZ6XmMDowQKAc4to4kAEpw== X-Received: by 2002:a37:815:: with SMTP id 21mr5282354qki.257.1561668001841; Thu, 27 Jun 2019 13:40:01 -0700 (PDT) Received: from localhost ([2620:10d:c091:480::5a51]) by smtp.gmail.com with ESMTPSA id i48sm99535qte.93.2019.06.27.13.40.01 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 27 Jun 2019 13:40:01 -0700 (PDT) From: Tejun Heo To: axboe@kernel.dk Cc: jack@suse.cz, josef@toxicpanda.com, clm@fb.com, dsterba@suse.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org, kernel-team@fb.com, Tejun Heo Subject: [PATCH 2/5] blkcg, writeback: Rename wbc_account_io() to wbc_account_cgroup_owner() Date: Thu, 27 Jun 2019 13:39:49 -0700 Message-Id: <20190627203952.386785-3-tj@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190627203952.386785-1-tj@kernel.org> References: <20190627203952.386785-1-tj@kernel.org> Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP wbc_account_io() does a very specific job - try to see which cgroup is actually dirtying an inode and transfer its ownership to the majority dirtier if needed. The name is too generic and confusing. Let's rename it to something more specific. Signed-off-by: Tejun Heo Cc: Jan Kara Reviewed-by: Jan Kara --- Documentation/admin-guide/cgroup-v2.rst | 2 +- fs/btrfs/extent_io.c | 4 ++-- fs/buffer.c | 2 +- fs/ext4/page-io.c | 2 +- fs/f2fs/data.c | 4 ++-- fs/fs-writeback.c | 8 ++++---- fs/mpage.c | 2 +- include/linux/writeback.h | 8 ++++---- 8 files changed, 16 insertions(+), 16 deletions(-) diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst index cf88c1f98270..356a7a3dcb2f 100644 --- a/Documentation/admin-guide/cgroup-v2.rst +++ b/Documentation/admin-guide/cgroup-v2.rst @@ -2108,7 +2108,7 @@ following two functions. a queue (device) has been associated with the bio and before submission. - wbc_account_io(@wbc, @page, @bytes) + wbc_account_cgroup_owner(@wbc, @page, @bytes) Should be called for each data segment being written out. While this function doesn't care exactly when it's called during the writeback session, it's the easiest and most diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index db337e53aab3..5106008f5e28 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2911,7 +2911,7 @@ static int submit_extent_page(unsigned int opf, struct extent_io_tree *tree, bio = NULL; } else { if (wbc) - wbc_account_io(wbc, page, page_size); + wbc_account_cgroup_owner(wbc, page, page_size); return 0; } } @@ -2924,7 +2924,7 @@ static int submit_extent_page(unsigned int opf, struct extent_io_tree *tree, bio->bi_opf = opf; if (wbc) { wbc_init_bio(wbc, bio); - wbc_account_io(wbc, page, page_size); + wbc_account_cgroup_owner(wbc, page, page_size); } *bio_ret = bio; diff --git a/fs/buffer.c b/fs/buffer.c index e450c55f6434..40547bbbea94 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -3093,7 +3093,7 @@ static int submit_bh_wbc(int op, int op_flags, struct buffer_head *bh, if (wbc) { wbc_init_bio(wbc, bio); - wbc_account_io(wbc, bh->b_page, bh->b_size); + wbc_account_cgroup_owner(wbc, bh->b_page, bh->b_size); } submit_bio(bio); diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index 4690618a92e9..56e287f5ee50 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -404,7 +404,7 @@ static int io_submit_add_bh(struct ext4_io_submit *io, ret = bio_add_page(io->io_bio, page, bh->b_size, bh_offset(bh)); if (ret != bh->b_size) goto submit_and_retry; - wbc_account_io(io->io_wbc, page, bh->b_size); + wbc_account_cgroup_owner(io->io_wbc, page, bh->b_size); io->io_next_block++; return 0; } diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index eda4181d2092..e1cab1717ac7 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -470,7 +470,7 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio) } if (fio->io_wbc && !is_read_io(fio->op)) - wbc_account_io(fio->io_wbc, page, PAGE_SIZE); + wbc_account_cgroup_owner(fio->io_wbc, page, PAGE_SIZE); bio_set_op_attrs(bio, fio->op, fio->op_flags); @@ -537,7 +537,7 @@ void f2fs_submit_page_write(struct f2fs_io_info *fio) } if (fio->io_wbc) - wbc_account_io(fio->io_wbc, bio_page, PAGE_SIZE); + wbc_account_cgroup_owner(fio->io_wbc, bio_page, PAGE_SIZE); io->last_block_in_bio = fio->new_blkaddr; f2fs_trace_ios(fio, 0); diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index a8a40bc26c2f..0aef79e934bb 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -706,7 +706,7 @@ void wbc_detach_inode(struct writeback_control *wbc) EXPORT_SYMBOL_GPL(wbc_detach_inode); /** - * wbc_account_io - account IO issued during writeback + * wbc_account_cgroup_owner - account writeback to update inode cgroup ownership * @wbc: writeback_control of the writeback in progress * @page: page being written out * @bytes: number of bytes being written out @@ -715,8 +715,8 @@ EXPORT_SYMBOL_GPL(wbc_detach_inode); * controlled by @wbc. Keep the book for foreign inode detection. See * wbc_detach_inode(). */ -void wbc_account_io(struct writeback_control *wbc, struct page *page, - size_t bytes) +void wbc_account_cgroup_owner(struct writeback_control *wbc, struct page *page, + size_t bytes) { struct cgroup_subsys_state *css; int id; @@ -753,7 +753,7 @@ void wbc_account_io(struct writeback_control *wbc, struct page *page, else wbc->wb_tcand_bytes -= min(bytes, wbc->wb_tcand_bytes); } -EXPORT_SYMBOL_GPL(wbc_account_io); +EXPORT_SYMBOL_GPL(wbc_account_cgroup_owner); /** * inode_congested - test whether an inode is congested diff --git a/fs/mpage.c b/fs/mpage.c index 436a85260394..a63620cdb73a 100644 --- a/fs/mpage.c +++ b/fs/mpage.c @@ -647,7 +647,7 @@ static int __mpage_writepage(struct page *page, struct writeback_control *wbc, * the confused fail path above (OOM) will be very confused when * it finds all bh marked clean (i.e. it will not write anything) */ - wbc_account_io(wbc, page, PAGE_SIZE); + wbc_account_cgroup_owner(wbc, page, PAGE_SIZE); length = first_unmapped << blkbits; if (bio_add_page(bio, page, length, 0) < length) { bio = mpage_bio_submit(REQ_OP_WRITE, op_flags, bio); diff --git a/include/linux/writeback.h b/include/linux/writeback.h index 738a0c24874f..dda5cf228172 100644 --- a/include/linux/writeback.h +++ b/include/linux/writeback.h @@ -188,8 +188,8 @@ void wbc_attach_and_unlock_inode(struct writeback_control *wbc, struct inode *inode) __releases(&inode->i_lock); void wbc_detach_inode(struct writeback_control *wbc); -void wbc_account_io(struct writeback_control *wbc, struct page *page, - size_t bytes); +void wbc_account_cgroup_owner(struct writeback_control *wbc, struct page *page, + size_t bytes); void cgroup_writeback_umount(void); /** @@ -291,8 +291,8 @@ static inline void wbc_init_bio(struct writeback_control *wbc, struct bio *bio) { } -static inline void wbc_account_io(struct writeback_control *wbc, - struct page *page, size_t bytes) +static inline void wbc_account_cgroup_owner(struct writeback_control *wbc, + struct page *page, size_t bytes) { }