linux-kernel - Re: [RFC PATCH 1/4] mm: migrate: Allow misplaced migration without VMA too

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Message-ID: <Z8nnPYldSXs5TYND@gourry-fedora-PF4VCD3F>
Date: Thu, 6 Mar 2025 13:19:41 -0500
From: Gregory Price <gourry@...rry.net>
To: Matthew Wilcox <willy@...radead.org>
Cc: Bharata B Rao <bharata@....com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, AneeshKumar.KizhakeVeetil@....com,
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Subject: Re: [RFC PATCH 1/4] mm: migrate: Allow misplaced migration without
 VMA too

On Thu, Mar 06, 2025 at 05:45:34PM +0000, Matthew Wilcox wrote:
> On Thu, Mar 06, 2025 at 12:24:16PM -0500, Gregory Price wrote:
> > we may also need this:
> > https://lore.kernel.org/linux-mm/20250107000346.1338481-4-gourry@gourry.net/
> > 
> > May be worth just pulling these ahead to avoid conflict.
> 
> Or not putting them in at all because this whole thing is a magnificent
> waste of time?

Divorced from the tiering mechanisms, is making misplaced migration able
to migrate unmapped pages not generally useful?

~Gregory