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Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1p0q8b-00GuDr-E5; Thu, 01 Dec 2022 20:26:29 +0000 Date: Thu, 1 Dec 2022 20:26:29 +0000 From: Matthew Wilcox To: ye.xingchen@zte.com.cn Cc: akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] mm/huge_memory: add TRANSPARENT_HUGEPAGE_NEVER for THP Message-ID: References: <202211301651462590168@zte.com.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202211301651462590168@zte.com.cn> X-Spamd-Result: default: False [0.10 / 9.00]; SUBJECT_HAS_UNDERSCORES(1.00)[]; BAYES_HAM(-0.70)[83.37%]; R_DKIM_ALLOW(-0.20)[infradead.org:s=casper.20170209]; MIME_GOOD(-0.10)[text/plain]; RCVD_NO_TLS_LAST(0.10)[]; R_SPF_NA(0.00)[no SPF record]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; DKIM_TRACE(0.00)[infradead.org:+]; MID_RHS_MATCH_FROMTLD(0.00)[]; ARC_SIGNED(0.00)[hostedemail.com:s=arc-20220608:i=1]; RCVD_COUNT_TWO(0.00)[2]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; DMARC_NA(0.00)[infradead.org]; TO_DN_NONE(0.00)[]; ARC_NA(0.00)[] X-Rspamd-Queue-Id: DEEF1C0008 X-Rspam-User: X-Rspamd-Server: rspam02 X-Stat-Signature: gmd73i4nnqnpt89nyudnx7cm4k3ozyan X-HE-Tag: 1669926394-84257 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: On Wed, Nov 30, 2022 at 04:51:46PM +0800, ye.xingchen@zte.com.cn wrote: > From: ye xingchen > > Sometimes we may need the /sys/kernel/mm/transparent_hugepage/enabled to > default as [never] at the first time. What is going wrong with THP enabled that you need to disable it?