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Date:   Tue, 25 Aug 2020 16:57:01 +0530
From:   Ritesh Harjani <>
To:     Yuxuan Shui <>,
        Christoph Hellwig <>
Cc:     "Darrick J. Wong" <>,,,,,
Subject: Re: [PATCH] iomap: iomap_bmap should accept unwritten maps

On 8/25/20 4:10 PM, Yuxuan Shui wrote:
> Hi,
> On Tue, Aug 25, 2020 at 11:20 AM Christoph Hellwig <> wrote:
>> On Tue, Aug 25, 2020 at 10:26:14AM +0100, Yuxuan Shui wrote:
>>> Hi,
>>> Do we actually want to fix this bug or not? There are a number of
>>> people actually seeing this bug.
>> bmap should not succeed for unwritten extents.
> Why not? Unwritten extents are still allocated extents.
>>> If you think this is not the right fix, what do you think we should
>>> do? If the correct fix is to make ext4 use iomap_swapfile_activate,
>>> maybe we should CC the ext4 people too?
>> Yes, ext4 should use iomap_swapfile_activate.
> OK, let me CC the ext4 people.
> Context:

Thanks for adding ext4 list. Noticed this report for the first time now.
Maybe I missed it from fsdevel. Let me have a look at it.


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