linux-ext4 - Re: [PATCH 09/14] xfs: Convert double locking of MMAPLOCK to use VFS helpers

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Message-ID: <YMmOUXSKfAWSwRFM@infradead.org>
Date:   Wed, 16 Jun 2021 06:38:25 +0100
From:   Christoph Hellwig <hch@...radead.org>
To:     Jan Kara <jack@...e.cz>
Cc:     linux-fsdevel@...r.kernel.org,
        Christoph Hellwig <hch@...radead.org>,
        Dave Chinner <david@...morbit.com>, ceph-devel@...r.kernel.org,
        Chao Yu <yuchao0@...wei.com>,
        Damien Le Moal <damien.lemoal@....com>,
        "Darrick J. Wong" <darrick.wong@...cle.com>,
        Jaegeuk Kim <jaegeuk@...nel.org>,
        Jeff Layton <jlayton@...nel.org>,
        Johannes Thumshirn <jth@...nel.org>,
        linux-cifs@...r.kernel.org, linux-ext4@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net, linux-mm@...ck.org,
        linux-xfs@...r.kernel.org, Miklos Szeredi <miklos@...redi.hu>,
        Steve French <sfrench@...ba.org>, Ted Tso <tytso@....edu>,
        Matthew Wilcox <willy@...radead.org>,
        "Darrick J. Wong" <djwong@...nel.org>
Subject: Re: [PATCH 09/14] xfs: Convert double locking of MMAPLOCK to use VFS
 helpers

On Tue, Jun 15, 2021 at 11:17:59AM +0200, Jan Kara wrote:
> Convert places in XFS that take MMAPLOCK for two inodes to use helper
> VFS provides for it (filemap_invalidate_down_write_two()). Note that
> this changes lock ordering for MMAPLOCK from inode number based ordering
> to pointer based ordering VFS generally uses.

Looks good,

Reviewed-by: Christoph Hellwig <hch@....de>