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b=GspqzoKucGuEQUYDqA6ZJlUQr5mJXQNpLdCykmAI7hWXnw+B+zbr4sAW/Srdg8+Up 2yetTm2BGgdJAjRMYBB7WlMsfpCBOhiW1glF4LhRSR7Mel4O/7+xoFtYpO2CLtc93B TTUCzMH2DDg/2etYoker17UXZ9QADibor1Za+4SU= Date: Fri, 27 Mar 2026 13:11:20 -0700 From: Andrew Morton To: Dmitry Ilvokhin Cc: Vlastimil Babka , Suren Baghdasaryan , Michal Hocko , Brendan Jackman , Johannes Weiner , Zi Yan , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kernel-team@meta.com, Steven Rostedt Subject: Re: [PATCH v2 0/8] mm: use spinlock guards for zone lock Message-Id: <20260327131120.591770a2aa63abbaa7bbeadc@linux-foundation.org> In-Reply-To: References: 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-Server: rspam12 X-Stat-Signature: jrfqar5juw9g7c7irm1m6a1cfbwi3fiy X-Rspamd-Queue-Id: E4D6640019 X-Rspam-User: X-HE-Tag: 1774642282-236274 X-HE-Meta: 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 TJ3eNmeJ cQVIgB89BToHjXNTp/QzyswFEKbsdUbnm0XISuttWAh8K2DIVKHsEDcPWkSyACnlQ2Tq5nAHHXGxLDE/aGXIaC8xsmZoLNemrIZwF9D3+nZ7y51D8vq4/KeQN64RqvkKloh8k3gehh3omCXI62uW8J8ljpchSHB4LzwOFshHCCZK5sp4aOm1nNVmKvLg3MOXcGbThu8N6r5QL1cGEZrHw+UuSEAQQRh2eNILyuALG74OzorWJFI+ZOpRiqpPUatcQqq+aiLN6AAlPKZCvN5vP6kdeKL2yL0peA7+LBd4EnZSNKeLnZWm7P12x9w== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, 27 Mar 2026 16:14:40 +0000 Dmitry Ilvokhin wrote: > This series uses spinlock guard for zone lock across several mm > functions to replace explicit lock/unlock patterns with automatic > scope-based cleanup. > > This simplifies the control flow by removing 'flags' variables, goto > labels, and redundant unlock calls. > > Patches are ordered by decreasing value. The first six patches simplify > the control flow by removing gotos, multiple unlock paths, or 'ret' > variables. The last two are simpler lock/unlock pair conversions that > only remove 'flags' and can be dropped if considered unnecessary churn. Thanks, you've been busy. I'm not wanting to move new, non-fix, non-speedup things into mm.git until after -rc1 so there's your target. But now is a good time to be sending out material for people to look at. Let's not have a gigantic flood of new stuff the day after -rc1! I think progress here is totally dependent on whether those who regularly work on this code want guard() in there. A preference/familiarity/style choice, mainly. At present the adoption of guard() in mm/*.c is very small.