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Mon, 03 Mar 2025 10:21:47 -0800 (PST) MIME-Version: 1.0 References: <20250303084724.6490-15-kanchana.p.sridhar@intel.com> <202503031847.j1iReOtf-lkp@intel.com> In-Reply-To: <202503031847.j1iReOtf-lkp@intel.com> From: Nhat Pham Date: Mon, 3 Mar 2025 10:21:35 -0800 X-Gm-Features: AQ5f1Joteeu0OkDzJuqjMB5KRiGMoPyQGJnXPi01TtEkBA2B70o-aPls5I0oWA4 Message-ID: Subject: Re: [PATCH v8 14/14] mm: zswap: Compress batching with request chaining in zswap_store() of large folios. To: kernel test robot Cc: Kanchana P Sridhar , linux-kernel@vger.kernel.org, linux-mm@kvack.org, hannes@cmpxchg.org, yosry.ahmed@linux.dev, chengming.zhou@linux.dev, usamaarif642@gmail.com, ryan.roberts@arm.com, 21cnbao@gmail.com, ying.huang@linux.alibaba.com, akpm@linux-foundation.org, linux-crypto@vger.kernel.org, herbert@gondor.apana.org.au, davem@davemloft.net, clabbe@baylibre.com, ardb@kernel.org, ebiggers@google.com, surenb@google.com, kristen.c.accardi@intel.com, llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, wajdi.k.feghali@intel.com, vinodh.gopal@intel.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 84424C0012 X-Rspam-User: X-Stat-Signature: rmfmumgyedn9tzznwzz9atoiey5xkkd4 X-HE-Tag: 1741026108-5915 X-HE-Meta: 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 TuKvb1K1 4TQYPnTiKSX4iTOKqqW2+nbC9jM9G3zsrGKIo0LeT0xLhAr5gHA/Y5qE7eiOKDsTwOOWXHaPespIU7k4Yb12Np0PnB1flEiQN41jba8X45ShAWKdBMNYQLXdem3aALa02lfPXr8oaR6eJAqDaQJgOAsffkuCQT3rCphX/ZC6cuu6H6W4SImIgoYp4vBHnRXzT4+MN0A6Cas6c/V1qIKCiBeEuE+hIzk81fPZ+uGgPs8Ysezf3Vkf5hQrPktxP8H7o40ebftmt0EaXgTbhu8PyPShSipCIpN5XD7PGO2nGP/RB1UQfx/14QORG+YP7MLfD/s7EoE53whcqdIRZKhyKt67DOEn2ddYff71nrwFLWkxPb6uWv4I41oQH+QZ3gVHDrgDRBY6ihRafpE4= X-Bogosity: Ham, tests=bogofilter, spamicity=0.011517, 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, Mar 3, 2025 at 3:07=E2=80=AFAM kernel test robot wr= ote: > > Hi Kanchana, > > kernel test robot noticed the following build errors: > > > 1166 prefetchw(entries[j]); > -- Why are we doing this anyway? Does it have a notable performance difference? At the very least, leave a comment explaining why we're prefetching this (although the build error suggests that we have to remove it anyway).