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: <D1EB6EA5-205B-4448-BCE0-1D26F3EB34B6@nvidia.com>
Date: Fri, 01 Mar 2024 10:21:10 -0500
From: Zi Yan <ziy@...dia.com>
To: Mark Brown <broonie@...nel.org>
Cc: Ryan Roberts <ryan.roberts@....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 1 Mar 2024, at 9:27, Mark Brown wrote:

> 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.

Sure. lkp creates a XFS image and mount it. I will give it a try. If it is too
hard to do, I will do what Ryan suggested above.

--
Best Regards,
Yan, Zi

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