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References: <20210607144631.8717-1-jack@suse.cz> <20210607145236.31852-12-jack@suse.cz>
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From:   Miklos Szeredi <miklos@szeredi.hu>
Date:   Thu, 10 Jun 2021 14:42:12 +0200
Message-ID: <CAJfpegtLD6SzSOh0phgNcdU_Xp+pzUCQWZ+CB8HjKFV5nS3SCA@mail.gmail.com>
Subject: Re: [PATCH 12/14] fuse: Convert to using invalidate_lock
To:     Jan Kara <jack@suse.cz>
Cc:     linux-fsdevel@vger.kernel.org,
        Christoph Hellwig <hch@infradead.org>,
        Dave Chinner <david@fromorbit.com>, ceph-devel@vger.kernel.org,
        Chao Yu <yuchao0@huawei.com>,
        Damien Le Moal <damien.lemoal@wdc.com>,
        "Darrick J. Wong" <darrick.wong@oracle.com>,
        Jaegeuk Kim <jaegeuk@kernel.org>,
        Jeff Layton <jlayton@kernel.org>,
        Johannes Thumshirn <jth@kernel.org>,
        CIFS <linux-cifs@vger.kernel.org>,
        Ext4 <linux-ext4@vger.kernel.org>,
        linux-f2fs-devel@lists.sourceforge.net,
        linux-mm <linux-mm@kvack.org>,
        linux-xfs <linux-xfs@vger.kernel.org>,
        Steve French <sfrench@samba.org>, Ted Tso <tytso@mit.edu>,
        Matthew Wilcox <willy@infradead.org>
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On Mon, 7 Jun 2021 at 16:52, Jan Kara <jack@suse.cz> wrote:
>
> Use invalidate_lock instead of fuse's private i_mmap_sem. The intended
> purpose is exactly the same. By this conversion we fix a long standing
> race between hole punching and read(2) / readahead(2) paths that can
> lead to stale page cache contents.
>
> CC: Miklos Szeredi <miklos@szeredi.hu>
> Signed-off-by: Jan Kara <jack@suse.cz>

Reviewed-by: Miklos Szeredi <mszeredi@redhat.com>

Thanks,
Miklos