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b=vZzmcAqUuhtTtgFOjBIROzyqMPic/9fHZY9lG8sX3dgSEhWI514lr8ha1A4xwlnNG gwVsibhPJdVEtCLMn80evGYjHGZ5pnPIB+ze1PfbqqSW+FUg2agz49fq0UAjqARp8d stOqxqz85f+2UBHAhV7g1jtwOpuJQ1VtBmZan1cU= Date: Wed, 15 Jul 2026 12:33:09 -0700 From: Andrew Morton To: Brendan Jackman Cc: Vlastimil Babka , Suren Baghdasaryan , Michal Hocko , Johannes Weiner , Zi Yan , Sebastian Andrzej Siewior , Clark Williams , Steven Rostedt , Alexei Starovoitov , Harry Yoo , Shakeel Butt , linux-mm@kvack.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, sashiko-bot@kernel.org Subject: Re: [PATCH 0/2] mm/page_alloc: fixes for free_pages_nolock() on RT/UP Message-Id: <20260715123309.621edcb4b5ed72499d31ec9a@linux-foundation.org> In-Reply-To: <20260715-alloc-nolock-fixes-v1-0-fadc49952dda@google.com> References: <20260715-alloc-nolock-fixes-v1-0-fadc49952dda@google.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: AC7804000B X-Rspam-User: X-Stat-Signature: 1x6qg9z5hndqmkjd9a3k4eiqskh8awur X-Rspamd-Server: rspam03 X-HE-Tag: 1784143991-425897 X-HE-Meta: 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 jWKdy2Hn dPHQFcpuI+Vy45CDWdoBnZopKfuYRei/p6ayfpCS18Ydq32xCMqRuGMlXucSIAtL3WNCM+vYWKaZjzxKkUsDPUWV9jZMRSnU4GOrO2EypniV7zWYfmyjqz2GWFDRIe3lqmhe6fegyf0dXBsXmKg5Va8NVS4VMnmFUaotbTnigEclyW8sHZwFvEdn0mPUqXgXWa2t+mJBFVkcS2JHaHhKtR1c0IL4yrUWGAU0deTSEVDgawBXq/mVCF3I55DAxZSnNbmGoR7h0Mi0a88OydKQEn/SpO6U/WhS1jN9rYszXJqOGIYHKY2Y1l8TZMPGhietqpK1VU19VMmj9wul7wmTa5Hfws1cgAJawwc2/nSJZ9TCMPOqy52cqDBZv6AAxFVZK1DEzjzF3BOHBYdewiJTx4FEVeA== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, 15 Jul 2026 09:03:57 +0000 Brendan Jackman wrote: > First patch was originally part of a different series but Andrew asked > for it to be separate: > https://lore.kernel.org/all/20260710170311.e22bfd21c658e8357ceddeec@linux-foundation.org/ > > Pre-existing bugs found by Sashiko during review of this other series: > https://lore.kernel.org/all/20260703-alloc-trylock-v5-0-c87b714e19d3@google.com/ > > I have not reproduced these bugs, and I suspect there is no real-world > user that is affected by them. Right, thanks. I'll stage these for the next merge window - no need to rush these fixes into mainline. And I staged them ahead of your "mm/page_alloc: rename FPI_TRYLOCK -> FPI_NOLOCK", to lessen backporting hassles.