From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5CBBEC433DB for ; Mon, 11 Jan 2021 14:56:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0C0D4225AB for ; Mon, 11 Jan 2021 14:56:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387980AbhAKOzi (ORCPT ); Mon, 11 Jan 2021 09:55:38 -0500 Received: from mx2.suse.de ([195.135.220.15]:38544 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728354AbhAKOzf (ORCPT ); Mon, 11 Jan 2021 09:55:35 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 598DDAB7A; Mon, 11 Jan 2021 14:54:54 +0000 (UTC) Received: by quack2.suse.cz (Postfix, from userid 1000) id 2460A1E0807; Mon, 11 Jan 2021 15:54:54 +0100 (CET) Date: Mon, 11 Jan 2021 15:54:54 +0100 From: Jan Kara To: Eric Biggers Cc: linux-fsdevel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, Theodore Ts'o , Christoph Hellwig Subject: Re: [PATCH v2 05/12] fs: don't call ->dirty_inode for lazytime timestamp updates Message-ID: <20210111145454.GD18475@quack2.suse.cz> References: <20210109075903.208222-1-ebiggers@kernel.org> <20210109075903.208222-6-ebiggers@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210109075903.208222-6-ebiggers@kernel.org> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org On Fri 08-01-21 23:58:56, Eric Biggers wrote: > From: Eric Biggers > > There is no need to call ->dirty_inode for lazytime timestamp updates > (i.e. for __mark_inode_dirty(I_DIRTY_TIME)), since by the definition of > lazytime, filesystems must ignore these updates. Filesystems only need > to care about the updated timestamps when they expire. > > Therefore, only call ->dirty_inode when I_DIRTY_INODE is set. > > Based on a patch from Christoph Hellwig: > https://lore.kernel.org/r/20200325122825.1086872-4-hch@lst.de > > Reviewed-by: Christoph Hellwig > Signed-off-by: Eric Biggers Looks good to me. You can add: Reviewed-by: Jan Kara Honza > --- > fs/ext4/inode.c | 12 +----------- > fs/f2fs/super.c | 3 --- > fs/fs-writeback.c | 6 +++--- > fs/gfs2/super.c | 2 -- > 4 files changed, 4 insertions(+), 19 deletions(-) > > diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c > index 27946882d4ce4..4cc6c7834312f 100644 > --- a/fs/ext4/inode.c > +++ b/fs/ext4/inode.c > @@ -5933,26 +5933,16 @@ int __ext4_mark_inode_dirty(handle_t *handle, struct inode *inode, > * If the inode is marked synchronous, we don't honour that here - doing > * so would cause a commit on atime updates, which we don't bother doing. > * We handle synchronous inodes at the highest possible level. > - * > - * If only the I_DIRTY_TIME flag is set, we can skip everything. If > - * I_DIRTY_TIME and I_DIRTY_SYNC is set, the only inode fields we need > - * to copy into the on-disk inode structure are the timestamp files. > */ > void ext4_dirty_inode(struct inode *inode, int flags) > { > handle_t *handle; > > - if (flags == I_DIRTY_TIME) > - return; > handle = ext4_journal_start(inode, EXT4_HT_INODE, 2); > if (IS_ERR(handle)) > - goto out; > - > + return; > ext4_mark_inode_dirty(handle, inode); > - > ext4_journal_stop(handle); > -out: > - return; > } > > int ext4_change_inode_journal_flag(struct inode *inode, int val) > diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c > index b4a07fe62d1a5..cc98dc49f4a26 100644 > --- a/fs/f2fs/super.c > +++ b/fs/f2fs/super.c > @@ -1196,9 +1196,6 @@ static void f2fs_dirty_inode(struct inode *inode, int flags) > inode->i_ino == F2FS_META_INO(sbi)) > return; > > - if (flags == I_DIRTY_TIME) > - return; > - > if (is_inode_flag_set(inode, FI_AUTO_RECOVER)) > clear_inode_flag(inode, FI_AUTO_RECOVER); > > diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c > index c41cb887eb7d3..b7616bbd55336 100644 > --- a/fs/fs-writeback.c > +++ b/fs/fs-writeback.c > @@ -2255,16 +2255,16 @@ void __mark_inode_dirty(struct inode *inode, int flags) > * Don't do this for I_DIRTY_PAGES - that doesn't actually > * dirty the inode itself > */ > - if (flags & (I_DIRTY_INODE | I_DIRTY_TIME)) { > + if (flags & I_DIRTY_INODE) { > trace_writeback_dirty_inode_start(inode, flags); > > if (sb->s_op->dirty_inode) > sb->s_op->dirty_inode(inode, flags); > > trace_writeback_dirty_inode(inode, flags); > - } > - if (flags & I_DIRTY_INODE) > + > flags &= ~I_DIRTY_TIME; > + } > dirtytime = flags & I_DIRTY_TIME; > > /* > diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c > index 2f56acc41c049..042b94288ff11 100644 > --- a/fs/gfs2/super.c > +++ b/fs/gfs2/super.c > @@ -562,8 +562,6 @@ static void gfs2_dirty_inode(struct inode *inode, int flags) > int need_endtrans = 0; > int ret; > > - if (!(flags & I_DIRTY_INODE)) > - return; > if (unlikely(gfs2_withdrawn(sdp))) > return; > if (!gfs2_glock_is_locked_by_me(ip->i_gl)) { > -- > 2.30.0 > -- Jan Kara SUSE Labs, CR