linux-kernel - Re: [RFC PATCH 05/12] fs/proc/task_mmu: refactor pagemap_pmd

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Message-ID: <aPvjfo1hVlb_WBcz@gourry-fedora-PF4VCD3F>
Date: Fri, 24 Oct 2025 16:37:18 -0400
From: Gregory Price <gourry@...rry.net>
To: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
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Subject: Re: [RFC PATCH 05/12] fs/proc/task_mmu: refactor pagemap_pmd_range()

On Fri, Oct 24, 2025 at 09:15:59PM +0100, Lorenzo Stoakes wrote:
> On Fri, Oct 24, 2025 at 03:12:08PM -0400, Gregory Price wrote:
> 
> So maybe actually that isn't too bad of an idea...
> 
> Could also be
> 
> nonpresent_or_swap_t but that's kinda icky...

clearly we need:

union {
	swp_entry_t swap;
	nonpresent_entry_t np;
	pony_entry_t pony;
	plum_emtry_t beer;
} leaf_entry_t;

with

leaf_type whats_that_pte(leaf_entry_t);

with 20 more new functions about how to manage leaf_entries ;]

no not seriously, please have a good weekend!

and thanks again for doing this!
~Gregory