linux-kernel - Re: [PATCH v3 0/6] prctl: extend PR_SET_THP_DISABLE to only provide THPs when advised

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Message-ID: <d3d1b812-066a-4124-83ca-df96fa75e3b1@gmail.com>
Date: Wed, 13 Aug 2025 09:07:06 +0100
From: Usama Arif <usamaarif642@...il.com>
To: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>, david@...hat.com,
 linux-mm@...ck.org, linux-fsdevel@...r.kernel.org, corbet@....net,
 rppt@...nel.org, surenb@...gle.com, mhocko@...e.com, hannes@...xchg.org,
 baohua@...nel.org, shakeel.butt@...ux.dev, riel@...riel.com, ziy@...dia.com,
 laoar.shao@...il.com, dev.jain@....com, baolin.wang@...ux.alibaba.com,
 npache@...hat.com, Liam.Howlett@...cle.com, ryan.roberts@....com,
 vbabka@...e.cz, jannh@...gle.com, Arnd Bergmann <arnd@...db.de>,
 sj@...nel.org, linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
 kernel-team@...a.com
Subject: Re: [PATCH v3 0/6] prctl: extend PR_SET_THP_DISABLE to only provide
 THPs when advised



On 13/08/2025 07:06, Lorenzo Stoakes wrote:
> Usama - did we plan another respin here? I ask as not in mm-new.
> 

Yes, I have the changes ready since last week, was just waiting for a respin of
the selftest cleanup series that David mentioned in [1], but I dont see it
in the mailing list. I will just do the cleanup in my series and send it.


> Also heads up, my mm flags series will break this one, so if you're
> respinning, please make sure to use the mm flag helpers described in [0].

Sounds good, Thanks for the heads up!

I do see this in mm-new, so will just send the next revision today tested
on latest mm-new.


> 
> It's really simple, you just do:
> 
> mm_flags_test(MMF_xxx, mm) instead of test_bit(MMF_xxx, &mm->flags)
> mm_flags_set(MMF_xxx, mm) instead of set_bit(MMF_xxx, &mm->flags)
> mm_flags_clear(MMF_xxx, mm) instead of clear_bit(MMF_xxx, &mm->flags)
> 
> So should be very quick to fixup.
> 
> Sorry about that, but should be super simple to sort out.
> 
> Cheers, Lorenzo
> 
> [0]: https://lore.kernel.org/linux-mm/cover.1755012943.git.lorenzo.stoakes@oracle.com/
[1] https://lore.kernel.org/all/eec7e868-a61f-41ed-a8ef-7ff80548089f@redhat.com/