linux-kernel - Re: [PATCH v2] mm: remove redundant __GFP

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Message-ID: <784dd559-612d-4037-b315-d1b30253538a@vivo.com>
Date: Wed, 13 Aug 2025 10:25:47 +0800
From: Qianfeng Rong <rongqianfeng@...o.com>
To: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
Cc: SeongJae Park <sj@...nel.org>, Andrew Morton <akpm@...ux-foundation.org>,
 "Matthew Wilcox (Oracle)" <willy@...radead.org>,
 Will Deacon <will@...nel.org>, "Aneesh Kumar K.V" <aneesh.kumar@...nel.org>,
 Nick Piggin <npiggin@...il.com>, Peter Zijlstra <peterz@...radead.org>,
 David Hildenbrand <david@...hat.com>, Rik van Riel <riel@...riel.com>,
 "Liam R. Howlett" <Liam.Howlett@...cle.com>, Vlastimil Babka
 <vbabka@...e.cz>, Harry Yoo <harry.yoo@...cle.com>,
 Uladzislau Rezki <urezki@...il.com>, damon@...ts.linux.dev,
 linux-mm@...ck.org, linux-kernel@...r.kernel.org,
 linux-fsdevel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH v2] mm: remove redundant __GFP_NOWARN

在 2025/8/13 0:46, Lorenzo Stoakes 写道:
> On Tue, Aug 12, 2025 at 09:52:25PM +0800, Qianfeng Rong wrote:
>> Commit 16f5dfbc851b ("gfp: include __GFP_NOWARN in GFP_NOWAIT") made
>> GFP_NOWAIT implicitly include __GFP_NOWARN.
>>
>> Therefore, explicit __GFP_NOWARN combined with GFP_NOWAIT (e.g.,
>> `GFP_NOWAIT | __GFP_NOWARN`) is now redundant.  Let's clean up these
>> redundant flags across subsystems.
>>
>> No functional changes.
>>
>> Reviewed-by: Harry Yoo <harry.yoo@...cle.com>
>> Signed-off-by: Qianfeng Rong <rongqianfeng@...o.com>
> LGTM, I wonder if there are other such redundancies in the kernel?
For similar redundancies in other subsystems, I submitted separate patches
to minimize potential merge conflicts.

Best regards,
Qianfeng
>
> Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
>
>