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: <0f8b7e64-d08b-44d6-8a1b-2b4b8d64cbe6@lucifer.local>
Date: Wed, 13 Aug 2025 07:06:01 +0100
From: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
To: Usama Arif <usamaarif642@...il.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

Usama - did we plan another respin here? I ask as not in mm-new.

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].

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/