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imf03.hostedemail.com; dkim=none; spf=pass (imf03.hostedemail.com: domain of byungchul@sk.com designates 166.125.252.92 as permitted sender) smtp.mailfrom=byungchul@sk.com; dmarc=none ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1716781585; a=rsa-sha256; cv=none; b=RGssus3Y1d1NCfpFjFTFgzkkUvavEd1ckiPF/3dBU84utG13Nlw8hwLQbEeUQulH/5Lb9o WhqzPAkyTWxmUcEJvsAogX6rYSQAfOfwZ9lYsRBGiRpwZGXtbY7um3+OufhIv2GxF+T2p3 JX7/TZ6a1QiQ5yN+AT6KudxYkJLIhr4= X-AuditID: a67dfc5b-d6dff70000001748-5f-6654020b6189 Date: Mon, 27 May 2024 12:46:14 +0900 From: Byungchul Park To: Dave Hansen Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, kernel_team@skhynix.com, akpm@linux-foundation.org, ying.huang@intel.com, vernhao@tencent.com, mgorman@techsingularity.net, hughd@google.com, willy@infradead.org, david@redhat.com, peterz@infradead.org, luto@kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, rjgolo@gmail.com Subject: Re: [PATCH v10 00/12] LUF(Lazy Unmap Flush) reducing tlb numbers over 90% Message-ID: <20240527034614.GA12937@system.software.com> References: <20240510065206.76078-1-byungchul@sk.com> <982317c0-7faa-45f0-82a1-29978c3c9f4d@intel.com> <20240527015732.GA61604@system.software.com> MIME-Version: 1.0 Content-Type: text/plain; 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Just > tweaking the VFS or mmap() code likely isn't going to cut it. LUF is interested in limited folios that are migratable or reclaimable in lru for now. So, IMHO, fixing a few things is going to cut it. > I guess we'll see what you come up with next, but this email was really > just the result of Vlastimil and I chatting on IRC for five minutes > about this set. > > It has absolutely not been tested nor reviewed enough. I hope the > performance gains stick around once more of the bugs are gone. Sure. It should be. Byungchul