linux-ext4 - Re: [Cluster-devel] [PATCH 7/9] gfs2: handle a NULL folio in gfs2_jhead_process

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Date:   Wed, 18 Jan 2023 17:42:34 +0100
From:   Christoph Hellwig <hch@....de>
To:     Andreas Gruenbacher <agruenba@...hat.com>
Cc:     Matthew Wilcox <willy@...radead.org>,
        Christoph Hellwig <hch@....de>, linux-xfs@...r.kernel.org,
        linux-nilfs@...r.kernel.org, Hugh Dickins <hughd@...gle.com>,
        cluster-devel@...hat.com, linux-mm@...ck.org,
        linux-fsdevel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-ext4@...r.kernel.org, linux-afs@...ts.infradead.org,
        linux-btrfs@...r.kernel.org
Subject: Re: [Cluster-devel] [PATCH 7/9] gfs2: handle a NULL folio in
 gfs2_jhead_process_page

On Wed, Jan 18, 2023 at 05:24:32PM +0100, Andreas Gruenbacher wrote:
> We're actually still holding a reference to the folio from the
> find_or_create_page() in gfs2_find_jhead() here, so we know that
> memory pressure can't push the page out and filemap_get_folio() won't
> return NULL.

Ok, I'll drop this patch.