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Date: Thu, 23 Nov 2023 01:56:21 +0530
From: Ritesh Harjani (IBM) <>
To: Christoph Hellwig <>, Jan Kara <>
Subject: Re: [RFC 2/3] ext2: Convert ext2 regular file buffered I/O to use iomap

Christoph Hellwig <> writes:

> On Wed, Nov 22, 2023 at 01:29:46PM +0100, Jan Kara wrote:
>> writeback bit set. XFS plays the revalidation sequence counter games
>> because of this so we'd have to do something similar for ext2. Not that I'd
>> care as much about ext2 writeback performance but it should not be that
>> hard and we'll definitely need some similar solution for ext4 anyway. Can
>> you give that a try (as a followup "performance improvement" patch).
> Darrick has mentioned that he is looking into lifting more of the
> validation sequence counter validation into iomap.
> In the meantime I have a series here that at least maps multiple blocks
> inside a folio in a single go, which might be worth trying with ext2 as
> well:

Sure, thanks for providing details. I will check this.


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