linux-kernel - Re: [PATCH v5 8/8] mm: huge_memory: enable debugfs to split huge pages to any order.

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Message-ID: <dda99ee0-87a2-482d-bf28-bd5e5a97b46e@sirena.org.uk>
Date: Fri, 1 Mar 2024 14:27:23 +0000
From: Mark Brown <broonie@...nel.org>
To: Ryan Roberts <ryan.roberts@....com>
Cc: Zi Yan <ziy@...dia.com>, Aishwarya TCV <aishwarya.tcv@....com>,
	"Pankaj Raghav (Samsung)" <kernel@...kajraghav.com>,
	linux-mm@...ck.org, "Matthew Wilcox (Oracle)" <willy@...radead.org>,
	David Hildenbrand <david@...hat.com>,
	Yang Shi <shy828301@...il.com>, Yu Zhao <yuzhao@...gle.com>,
	"Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
	Michal Koutný <mkoutny@...e.com>,
	Roman Gushchin <roman.gushchin@...ux.dev>,
	Zach O'Keefe <zokeefe@...gle.com>, Hugh Dickins <hughd@...gle.com>,
	Luis Chamberlain <mcgrof@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH v5 8/8] mm: huge_memory: enable debugfs to split huge
 pages to any order.

On Fri, Mar 01, 2024 at 02:18:16PM +0000, Ryan Roberts wrote:

> Although I agree it might be a tall order create and mount an XFS fs in
> run_vmtests.sh. Perhaps it might be good enough to add an optional param to the
> test to pass a path when running the test manually, and if that's not provided,
> just try to create a temp file in the current dir and skip if its not the right
> sort of fs?

Yeah, if it needs to be a specific kind of on disk filesystem then that
needs a lot more integration with CI systems (a lot of them run entirely
from nfsroot by default!).  Being able to specify the location via an
environment variable would also be good, it could fall back to the
current directory if one isn't set up.

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