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Wed, 20 Apr 2022 20:25:21 -0700 (PDT) Date: Thu, 21 Apr 2022 13:25:11 +1000 From: Nicholas Piggin Subject: Re: [PATCH v4 bpf 0/4] vmalloc: bpf: introduce VM_ALLOW_HUGE_VMAP To: Mike Rapoport , Linus Torvalds Cc: "akpm@linux-foundation.org" , "ast@kernel.org" , "bp@alien8.de" , "bpf@vger.kernel.org" , "daniel@iogearbox.net" , "dborkman@redhat.com" , "edumazet@google.com" , "hch@infradead.org" , "hpa@zytor.com" , "imbrenda@linux.ibm.com" , Kernel Team , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "mbenes@suse.cz" , "mcgrof@kernel.org" , "pmladek@suse.com" , "Edgecombe, Rick P" , "song@kernel.org" , Song Liu References: <20220415164413.2727220-1-song@kernel.org> <4AD023F9-FBCE-4C7C-A049-9292491408AA@fb.com> <88eafc9220d134d72db9eb381114432e71903022.camel@intel.com> In-Reply-To: MIME-Version: 1.0 Message-Id: <1650511496.iys9nxdueb.astroid@bobo.none> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 3F01D100027 X-Stat-Signature: 5rtdshd3qincq5ngh17abs185y5qdtoz Authentication-Results: imf05.hostedemail.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=DZZpQpUj; spf=pass (imf05.hostedemail.com: domain of npiggin@gmail.com designates 209.85.210.169 as permitted sender) smtp.mailfrom=npiggin@gmail.com; dmarc=pass (policy=none) header.from=gmail.com X-HE-Tag: 1650511521-105402 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: Excerpts from Linus Torvalds's message of April 20, 2022 5:20 am: > On Tue, Apr 19, 2022 at 11:42 AM Mike Rapoport wrote: >> >> I'd say that bpf_prog_pack was a cure for symptoms and this project trie= s >> to address more general problem. >> But you are right, it'll take some time and won't land in 5.19. >=20 > Just to update people: I've just applied Song's [1/4] patch, which > means that the whole current hugepage vmalloc thing is effectively > disabled (because nothing opts in). >=20 > And I suspect that will be the status for 5.18, unless somebody comes > up with some very strong arguments for (re-)starting using huge pages. Why not just revert fac54e2bfb5b ? Thanks, Nick