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[96.255.20.138]) by smtp.gmail.com with ESMTPSA id af79cd13be357-8c0975ec0f0sm188333085a.50.2025.12.19.06.20.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Dec 2025 06:20:02 -0800 (PST) Date: Fri, 19 Dec 2025 09:19:25 -0500 From: Gregory Price To: Andrew Morton Cc: linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-team@meta.com, david@kernel.org, osalvador@suse.de, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com, corbet@lwn.net, muchun.song@linux.dev, laoar.shao@gmail.com, brauner@kernel.org, jack@suse.cz, hannes@cmpxchg.org, mclapinski@google.com, joel.granados@kernel.org, David Hildenbrand , Mel Gorman , David Rientjes Subject: Re: [PATCH v4] mm, hugetlb: implement movable_gigantic_pages sysctl Message-ID: References: <20251218151211.1237411-1-gourry@gourry.net> <20251218165538.b299508aacdaf7d941035ec3@linux-foundation.org> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251218165538.b299508aacdaf7d941035ec3@linux-foundation.org> On Thu, Dec 18, 2025 at 04:55:38PM -0800, Andrew Morton wrote: > On Thu, 18 Dec 2025 10:12:11 -0500 Gregory Price wrote: > > > This reintroduces a concept removed by: > > commit d6cb41cc44c6 ("mm, hugetlb: remove hugepages_treat_as_movable sysctl") > > > > This sysctl provides flexibility between ZONE_MOVABLE use cases: > > 1) onlining memory in ZONE_MOVABLE to maintain hotplug compatibility > > 2) onlining memory in ZONE_MOVABLE to make hugepage allocate reliable > > My x86_64 allmodconfig blew up. > > > ... > > > > --- a/mm/hugetlb.c > > +++ b/mm/hugetlb.c > > @@ -49,7 +49,6 @@ > > #include "internal.h" > > #include "hugetlb_vmemmap.h" > > #include "hugetlb_cma.h" > > -#include "hugetlb_internal.h" > > #include > > What's that doing there? I put it back. Helped! > erk, this must have been carried over from a forward port, when all these things moved into hugetlb_sysfs.c - very sorry, I will be more careful. > But the build still failed because the patch refers to > > extern int movable_gigantic_pages __read_mostly; > > but forgot to define it. v5, please ;) > > doh, well that's just embarassing Will sus this out and send v5, sorry for the time sink ~Gregory