linux-kernel - Re: [PATCH v1 4/9] mm/memory: Add tree limit to free

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Message-ID: <3pn4anukobmyhul2zw6cqwl4nvu47ecji4cldgsfer24p35k6s@km5dfxpzvzzf>
Date: Wed, 10 Sep 2025 14:08:01 +0100
From: Pedro Falcato <pfalcato@...e.de>
To: "Liam R. Howlett" <Liam.Howlett@...cle.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>, 
	maple-tree@...ts.infradead.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org, 
	David Hildenbrand <david@...hat.com>, Lorenzo Stoakes <lorenzo.stoakes@...cle.com>, 
	Vlastimil Babka <vbabka@...e.cz>, Suren Baghdasaryan <surenb@...gle.com>, 
	Michal Hocko <mhocko@...e.com>, Jann Horn <jannh@...gle.com>, 
	Charan Teja Kalla <quic_charante@...cinc.com>, shikemeng@...weicloud.com, kasong@...cent.com, nphamcs@...il.com, 
	bhe@...hat.com, baohua@...nel.org, chrisl@...nel.org, 
	Matthew Wilcox <willy@...radead.org>
Subject: Re: [PATCH v1 4/9] mm/memory: Add tree limit to free_pgtables()

On Tue, Sep 09, 2025 at 03:09:40PM -0400, Liam R. Howlett wrote:
> The ceiling and tree search limit need to be different arguments for the
> future change in the failed fork attempt.
> 
> Add some documentation around free_pgtables() and the limits in an
> attempt to clarify the floor and ceiling use as well as the new
> tree_max.
> 
> Test code also updated.
> 
> No functional changes intended.
> 
> Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>

Reviewed-by: Pedro Falcato <pfalcato@...e.de>

-- 
Pedro