linux-kernel - Re: [PATCH 2/4] fs: avoid double-writing the inode on a lazytime expiration

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Message-ID: <20200325150108.GA14435@lst.de>
Date:   Wed, 25 Mar 2020 16:01:08 +0100
From:   Christoph Hellwig <hch@....de>
To:     Theodore Ts'o <tytso@....edu>, Jaegeuk Kim <jaegeuk@...nel.org>,
        Chao Yu <chao@...nel.org>, Al Viro <viro@...iv.linux.org.uk>,
        Richard Weinberger <richard@....at>, linux-xfs@...r.kernel.org
Cc:     Eric Biggers <ebiggers@...nel.org>, linux-ext4@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-fsdevel@...r.kernel.org, linux-mtd@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] fs: avoid double-writing the inode on a lazytime
 expiration

On Wed, Mar 25, 2020 at 01:28:23PM +0100, Christoph Hellwig wrote:
> --- a/fs/ext4/super.c
> +++ b/fs/ext4/super.c
> @@ -1448,6 +1448,11 @@ static struct dquot **ext4_get_dquots(struct inode *inode)
>  	return EXT4_I(inode)->i_dquot;
>  }
>  
> +static void ext4_lazytime_expired(struct inode *inode)
> +{
> +	return ext4_dirty_inode(inode, I_DIRTY_SYNC);
> +}

FYI: this is inside an #ifdef CONFIG_QUOTA, so I'll have to respin even
if the overall approach looks good.