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Sat, 16 Aug 2025 18:31:40 +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 LqE2GozOoGgqCAAAD6G6ig (envelope-from ); Sat, 16 Aug 2025 18:31:40 +0000 Message-ID: <22666e86-2523-4136-94e6-0de126fcec1e@suse.cz> Date: Sat, 16 Aug 2025 20:33:47 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 00/14] SLUB percpu sheaves From: Vlastimil Babka To: Sudarsan Mahendran , Harry Yoo Cc: Liam.Howlett@oracle.com, cl@gentwo.org, howlett@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, maple-tree@lists.infradead.org, rcu@vger.kernel.org, rientjes@google.com, roman.gushchin@linux.dev, surenb@google.com, urezki@gmail.com, Greg Thelen References: <20250723-slub-percpu-caches-v5-0-b792cd830f5d@suse.cz> <20250815225259.3012455-2-sudarsanm@google.com> <498fc518-d78a-43a4-9196-507891e9b844@suse.cz> Content-Language: en-US In-Reply-To: <498fc518-d78a-43a4-9196-507891e9b844@suse.cz> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Action: no action X-Rspamd-Server: rspam03 X-Rspam-User: X-Rspamd-Queue-Id: E367540008 X-Stat-Signature: symnq8t7nudkruu9ep3ucpb4t45ht1ox X-HE-Tag: 1755369102-760345 X-HE-Meta: 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 hIqc5I/N EvFmf3+fXtye3uAGbO+G3Re0bAmqLGcxbVQLtdvruU0H6wiKhYrU4e53vTIHSvBrpyqxDOwT+gI4Mu7lknL2Cc3xX5yV1UBJXaMlZXmFJ2O62vhGiJ5INI3MuaknmxfURPWuAkFfQm9mKB/2nqTSjXl08dgs2HaUjtYqvyX8OSoJZ4LdJQ80guDNLiyHLJ3zwdXS4OuxxQhdCQYZ2yiw5ekT1sANcuTsWiAPm+qxn0GXAbG21gfFLFM8CSgtmTWhi6dPx1bvBFnpack64JT0DMa6N6QdOQ+al2PZvcVfjKBZJGvmjHVyff+uo/g== 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 8/16/25 8:31 PM, Vlastimil Babka wrote: >> >> I assume somehow the free_to_pcs_bulk() fallback case is taken, thus >> calling __kmem_cache_free_bulk(), which calls free_to_pcs_bulk() ad nauseam. > Could it be a rebase gone wrong? Mine to 6.17-rc1 is here (but untested) > > https://git.kernel.org/pub/scm/linux/kernel/git/vbabka/linux.git/ This branch specifically https://git.kernel.org/pub/scm/linux/kernel/git/vbabka/linux.git/log/?h=b4/slub-percpu-sheaves