linux-kernel - Re: [PATCH 03/10] ext4: Convert mpage_release_unused_pages() to use filemap_get

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Message-ID: <YqBXjjkRZsP8K8fO@infradead.org>
Date:   Wed, 8 Jun 2022 01:02:22 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
        linux-mm@...ck.org, linux-nilfs@...r.kernel.org
Subject: Re: [PATCH 03/10] ext4: Convert mpage_release_unused_pages() to use
 filemap_get_folios()

On Sun, Jun 05, 2022 at 08:38:47PM +0100, Matthew Wilcox (Oracle) wrote:
> If the folio is large, it may overlap the beginning or end of the
> unused range.  If it does, we need to avoid invalidating it.

It's never going to be larger for ext4, is it?  But either way,
those precautions looks fine.

Reviewed-by: Christoph Hellwig <hch@....de>