From: Muchun Song <muchun.song@linux.dev>
To: Qi Zheng <qi.zheng@linux.dev>
Cc: osalvador@suse.de, David Hildenbrand <david@kernel.org>,
akpm@linux-foundation.org, azpijr@gmail.com,
Lance Yang <lance.yang@linux.dev>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Qi Zheng <zhengqi.arch@bytedance.com>,
stable@vger.kernel.org
Subject: Re: [PATCH v2 3/4] mm: hugetlb: fix GFP mask propagation to CMA
Date: Thu, 5 Nov 2026 13:17:57 +0800 [thread overview]
Message-ID: <711211AD-BD2A-497D-8541-B63C68509920@linux.dev> (raw)
In-Reply-To: <ac2de9b321f68c1025333e92e3ce94beadcb0b6c.1793850539.git.zhengqi.arch@bytedance.com>
> On Nov 5, 2026, at 12:07, Qi Zheng <qi.zheng@linux.dev> wrote:
>
> From: Qi Zheng <zhengqi.arch@bytedance.com>
>
> cma_alloc_frozen_compound() uses GFP_KERNEL, allowing direct reclaim
> during the first MPOL_PREFERRED_MANY allocation attempt even though
> the caller clears __GFP_DIRECT_RECLAIM.
>
> Pass the caller's GFP mask through the helper so CMA respects its
> reclaim constraints when trying the preferred nodes.
More natural.
>
> Fixes: 9bda131c6093 ("mm: cma: add cma_alloc_frozen{_compound}()")
> Cc: stable@vger.kernel.org
> Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
Acked-by: Muchun Song <muchun.song@linux.dev>
Thanks.
next prev parent reply other threads:[~2026-11-05 5:18 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-05 4:07 [PATCH v2 0/4] mm: hugetlb: fix CMA-related issues Qi Zheng
2026-11-05 4:07 ` [PATCH v2 1/4] x86: hugetlb: disable default CMA reservations on 32-bit kernel Qi Zheng
2026-11-05 9:29 ` Oscar Salvador (SUSE)
2026-11-05 4:07 ` [PATCH v2 2/4] mm: gup: allow long-term pins of CMA-allocated HugeTLB folios Qi Zheng
2026-11-05 5:13 ` Muchun Song
2026-11-05 9:33 ` Oscar Salvador (SUSE)
2026-11-05 11:28 ` Jose A. Perez de Azpillaga
2026-11-05 4:07 ` [PATCH v2 3/4] mm: hugetlb: fix GFP mask propagation to CMA Qi Zheng
2026-11-05 5:17 ` Muchun Song [this message]
2026-11-05 10:00 ` Oscar Salvador (SUSE)
2026-11-05 11:28 ` Jose A. Perez de Azpillaga
2026-11-05 4:07 ` [PATCH v2 4/4] mm: hugetlb: fix cpuset violations in gigantic surplus allocations Qi Zheng
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