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Shutemov" , John Hubbard , David Rientjes , Vlastimil Babka , Hugh Dickins , Kefeng Wang , Barry Song <21cnbao@gmail.com>, Alistair Popple , linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v8 00/10] Multi-size THP for anonymous memory Message-Id: <20231204113039.42510c23455026e40c5e2a56@linux-foundation.org> In-Reply-To: <20231204102027.57185-1-ryan.roberts@arm.com> References: <20231204102027.57185-1-ryan.roberts@arm.com> 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-Queue-Id: 7499C1C0019 X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: mfajp74u6wzmm3nwq71z5xci67gy4jug X-HE-Tag: 1701718243-642424 X-HE-Meta: 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 HSxeQtj5 MDLbPUZJmLcSB+zDt0ert1CvM8084coeFlwzfR6/AagySnNPsxKBN7uGSRozDfqSnXrUrHj4LWamFqCJHLzD0iu/99SqH6PRxggPQQT2BxQG1MSXu3u8MhtL4Txrxjm8pdEAUMBkPjWkwM67uPrEzvM6bC3WgIyT6ADVTTVHDS/C+79fc50evNj729mzNAhNquEtFWWDmfDY1cFsS/TKEW0i6p9drj7SfNG+A+rX3nmGALdQ5Kc78zn9u1PSf/dmwOQrk8RCmRnHk+HlSH4SCPRGTzdHT4oilZfgyk5cx6z538+Otv3pU2yXJk6CYhAI/iEVa1ftC4TZ0LXUgfpjacGj987yqAs9u2IjLmkW1IosrCptObiWgzHVzEkm2m0DXmCKP 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 Mon, 4 Dec 2023 10:20:17 +0000 Ryan Roberts wrote: > Hi All, > > > Prerequisites > ============= > > Some work items identified as being prerequisites are listed on page 3 at [9]. > The summary is: > > | item | status | > |:------------------------------|:------------------------| > | mlock | In mainline (v6.7) | > | madvise | In mainline (v6.6) | > | compaction | v1 posted [10] | > | numa balancing | Investigated: see below | > | user-triggered page migration | In mainline (v6.7) | > | khugepaged collapse | In mainline (NOP) | What does "prerequisites" mean here? Won't compile without? Kernel crashes without? Nice-to-have-after? Please expand on this. I looked at [9], but access is denied. > [9] https://drive.google.com/file/d/1GnfYFpr7_c1kA41liRUW5YtCb8Cj18Ud/view?usp=sharing&resourcekey=0-U1Mj3-RhLD1JV6EThpyPyA