linux-kernel - Re: [PATCH v13 00/72] Convert page cache to XArray

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Date:   Sat, 16 Jun 2018 05:07:21 -0700
From:   Matthew Wilcox <willy@...radead.org>
To:     Ross Zwisler <ross.zwisler@...ux.intel.com>, dsterba@...e.cz,
        linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Matthew Wilcox <mawilcox@...rosoft.com>,
        Jan Kara <jack@...e.cz>, Jeff Layton <jlayton@...hat.com>,
        Lukas Czerner <lczerner@...hat.com>,
        Christoph Hellwig <hch@....de>,
        Goldwyn Rodrigues <rgoldwyn@...e.com>,
        Nicholas Piggin <npiggin@...il.com>,
        Ryusuke Konishi <konishi.ryusuke@....ntt.co.jp>,
        linux-nilfs@...r.kernel.org, Jaegeuk Kim <jaegeuk@...nel.org>,
        Chao Yu <yuchao0@...wei.com>,
        linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [PATCH v13 00/72] Convert page cache to XArray

On Wed, Jun 13, 2018 at 02:10:21PM -0600, Ross Zwisler wrote:
> I tested xarray-20180612 vs next-20180612, and your patches cause a new
> deadlock with XFS + DAX + generic/269.  Here's the output from
> "echo w > /proc/sysrq-trigger":

After getting my pmem setup working (thanks for the help Dan &
Jeff), I tracked this down to a missing call to dax_wake_entry() in
dax_writeback_one().  I'm running xfstests -g auto now to see if
there's anything else that needs to be fixed.