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Received: from willy by casper.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1uHMjW-00000003IV3-17wq; Tue, 20 May 2025 13:10:14 +0000 Date: Tue, 20 May 2025 14:10:14 +0100 From: Matthew Wilcox To: Yafang Shao Cc: Nico Pache , akpm@linux-foundation.org, david@redhat.com, ziy@nvidia.com, baolin.wang@linux.alibaba.com, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, ryan.roberts@arm.com, dev.jain@arm.com, hannes@cmpxchg.org, usamaarif642@gmail.com, gutierrez.asier@huawei-partners.com, ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, bpf@vger.kernel.org, linux-mm@kvack.org Subject: Re: [RFC PATCH v2 0/5] mm, bpf: BPF based THP adjustment Message-ID: References: <20250520060504.20251-1-laoar.shao@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 8968540012 X-Stat-Signature: cmxdw9sn7gt16uxh7ctasj7nu6si1pcj X-Rspam-User: X-HE-Tag: 1747746630-288520 X-HE-Meta: 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 8o1KKrhY +HiS/GCszs1g2oENzZ7wc+PBfg5wnViSyYtG+xzobNdZN+Dtc0ngELav8BuTfYwycsVyLZV9H5K69zz7E1VJfuOPMfEDk7hu5xUKnKMppBNYkwjJf/fKyVsrMKBx7+m5jeBz86Lv8VJzgp7r1464XpcVBKDD7i8Udjj0PxLn2hPadA0h8WsIgMyQiNf2zRdial4Qp6n15/8dfqSfNi6HmNraGNJt5h9ijRoqiv67Ykgl0AajhhSLRdAQfiwBW5cNG93FgcAIPHJcnW7A= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, May 20, 2025 at 03:25:07PM +0800, Yafang Shao wrote: > The challenge we face is that our system administration team doesn't > permit enabling THP globally in production by setting it to "madvise" > or "always". As a result, we can only experiment with your feature on > our test servers at this stage. That's a you problem. You need to figure out how to influence your sysadmin team to change their mind; whether it's by talking to their superiors or persuading them directly. It's not a justification for why upstream should take this patch.