Re: [PATCH 5/9] xfs: buffered write failure should not truncate the page cache

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To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: [PATCH 5/9] xfs: buffered write failure should not truncate the page cache
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Tue, 15 Nov 2022 00:43:43 -0800
Cc: linux-xfs@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx
In-reply-to: <20221115013043.360610-6-david@fromorbit.com>

> +static int
> +xfs_buffered_write_delalloc_scan(

As pointed out last time, this is generic iomap (or in fact filemap.c,
but maybe start small) logic, so move it there and just pass
xfs_buffered_write_delalloc_punch as a callback.

References:
- [PATCH v2 0/9] xfs, iomap: fix data corrupton due to stale cached iomaps
  - From: Dave Chinner
- [PATCH 5/9] xfs: buffered write failure should not truncate the page cache
  - From: Dave Chinner

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