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From: Christoph Hellwig <hch@infradead.org>
To: Brian Foster <bfoster@redhat.com>
Cc: linux-fsdevel@vger.kernel.org, linux-xfs@vger.kernel.org
Subject: Re: [PATCH 1/2] iomap: use page dirty state to seek data over unwritten extents
Date: Thu, 15 Oct 2020 10:47:00 +0100	[thread overview]
Message-ID: <20201015094700.GB21420@infradead.org> (raw)
In-Reply-To: <20201012140350.950064-2-bfoster@redhat.com>

I don't think we can solve this properly.  Due to the racyness we can
always err one side.  The beauty of treating all the uptodate pages
as present data is that we err on the safe side, as applications
expect holes to never have data, while "data" could always be zeroed.

  parent reply	other threads:[~2020-10-15  9:47 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-12 14:03 [PATCH 0/2] iomap: zero dirty pages over unwritten extents Brian Foster
2020-10-12 14:03 ` [PATCH 1/2] iomap: use page dirty state to seek data " Brian Foster
2020-10-13 12:30   ` Brian Foster
2020-10-13 22:53   ` Dave Chinner
2020-10-14 12:59     ` Brian Foster
2020-10-14 22:37       ` Dave Chinner
2020-10-15  9:47   ` Christoph Hellwig [this message]
2020-10-19 16:55     ` Brian Foster
2020-10-27 18:07       ` Christoph Hellwig
2020-10-28 11:31         ` Brian Foster
2020-10-12 14:03 ` [PATCH 2/2] iomap: zero cached pages over unwritten extents on zero range Brian Foster
2020-10-15  9:49   ` Christoph Hellwig
2020-10-19 16:55     ` Brian Foster
2020-10-19 18:01       ` Brian Foster
2020-10-20 16:21         ` Brian Foster
2020-10-27 18:15           ` Christoph Hellwig
2020-10-28 11:31             ` Brian Foster
2020-10-23  1:02   ` [iomap] 11b5156248: xfstests.xfs.310.fail kernel test robot

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