linux-kernel - Re: Struct page proposal

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Message-ID: <9e3b16f6-bb54-5bcc-1664-2ecb61424018@redhat.com>
Date:   Mon, 27 Sep 2021 22:45:39 +0200
From:   David Hildenbrand <david@...hat.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Kent Overstreet <kent.overstreet@...il.com>
Cc:     Vlastimil Babka <vbabka@...e.cz>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux-MM <linux-mm@...ck.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Matthew Wilcox <willy@...radead.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Darrick J. Wong" <djwong@...nel.org>,
        Christoph Hellwig <hch@...radead.org>,
        David Howells <dhowells@...hat.com>
Subject: Re: Struct page proposal

On 27.09.21 20:34, Linus Torvalds wrote:
> On Mon, Sep 27, 2021 at 10:54 AM Kent Overstreet
> <kent.overstreet@...il.com> wrote:
>>
>> That list_head is the problematic one. Why do we need to be able to take a page
>> from the middle of a freelist?
> 
> At least for the merging with the buddy page case.

And alloc_contig_range(), page reporting, page poisioning ... and 
probably more.

-- 
Thanks,

David / dhildenb