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Mon, 19 Feb 2024 10:09:23 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id n+aNFNMo02XVHwAAD6G6ig (envelope-from ); Mon, 19 Feb 2024 10:09:23 +0000 Message-ID: <91c50335-e7b6-4ae1-9dad-a0c990b52021@suse.cz> Date: Mon, 19 Feb 2024 11:09:23 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: regression/bisected commit 773688a6cb24b0b3c2ba40354d883348a2befa38 make my system completely unusable under high load Content-Language: en-US To: Marco Elver , Mikhail Gavrilov , Andrew Morton Cc: Andrey Konovalov , glider@google.com, dvyukov@google.com, eugenis@google.com, Oscar Salvador , Linux List Kernel Mailing , Linux Memory Management List References: From: Vlastimil Babka In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 06120160005 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: 3hm9jqobcmz7jkc15idpjjpd83jmyudr X-HE-Tag: 1708337364-206854 X-HE-Meta: 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 SaegcrBQ aM0K1z7qFGz3iD2OOfNN7xGFPrMroSH3IRMkm X-Bogosity: Ham, tests=bogofilter, spamicity=0.000003, 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 2/19/24 10:52, Marco Elver wrote: > On Mon, 19 Feb 2024 at 10:48, Mikhail Gavrilov > wrote: >> >> On Sat, Feb 3, 2024 at 1:14 AM Mikhail Gavrilov >> wrote: >> > >> > You are right. >> > Thanks for digging into it! >> > >> >> This [2] revert is still not merged at least I checked on 4f5e5092fdbf. >> Is there any plan to merge it or find another approach? >> >> [2] https://lore.kernel.org/all/20240118110216.2539519-2-elver@google.com/ > > I think it's already in -mm and -next. It just takes time, which is a > good thing, after all we want to let -next testing confirm nothing is > wrong with it. > > Andrew, is this planned for the next merge window or as a "hot fix" > for the current rc? Given it has the right "Fixes" tags it will make > it to stable kernels eventually, but I also think that the previous > "slow" version is almost unusable on big systems, so it may be > worthwhile considering the current rc. Yeah it would be best to fix in 6.8 to prevent regressions. > Thanks, > -- Marco