linux-ext4 - Re: [PATCH v8 03/18] fs: check for writeback errors after syncing out buffers in generic_file

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Date:   Thu, 29 Jun 2017 07:19:33 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     jlayton@...nel.org
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Al Viro <viro@...IV.linux.org.uk>, Jan Kara <jack@...e.cz>,
        tytso@....edu, axboe@...nel.dk, mawilcox@...rosoft.com,
        ross.zwisler@...ux.intel.com, corbet@....net,
        Chris Mason <clm@...com>, Josef Bacik <jbacik@...com>,
        David Sterba <dsterba@...e.com>,
        "Darrick J . Wong" <darrick.wong@...cle.com>,
        Carlos Maiolino <cmaiolino@...hat.com>,
        Eryu Guan <eguan@...hat.com>,
        David Howells <dhowells@...hat.com>,
        Christoph Hellwig <hch@...radead.org>,
        Liu Bo <bo.li.liu@...cle.com>, linux-fsdevel@...r.kernel.org,
        linux-mm@...ck.org, linux-ext4@...r.kernel.org,
        linux-xfs@...r.kernel.org, linux-btrfs@...r.kernel.org,
        linux-block@...r.kernel.org
Subject: Re: [PATCH v8 03/18] fs: check for writeback errors after syncing
 out buffers in generic_file_fsync

On Thu, Jun 29, 2017 at 09:19:39AM -0400, jlayton@...nel.org wrote:
> From: Jeff Layton <jlayton@...hat.com>
> 
> ext2 currently does a test+clear of the AS_EIO flag, which is
> is problematic for some coming changes.
> 
> What we really need to do instead is call filemap_check_errors
> in __generic_file_fsync after syncing out the buffers. That
> will be sufficient for this case, and help other callers detect
> these errors properly as well.
> 
> With that, we don't need to twiddle it in ext2.

Seems like much of this code is getting replaced later in the
series..