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From: Shakeel Butt To: Johannes Weiner Cc: Andrew Morton , David Hildenbrand , Yosry Ahmed , Zi Yan , "Liam R. Howlett" , Usama Arif , Kiryl Shutsemau , Dave Chinner , Roman Gushchin , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 3/7] mm: list_lru: move list dead check to lock_list_lru_of_memcg() Message-ID: References: <20260318200352.1039011-1-hannes@cmpxchg.org> <20260318200352.1039011-4-hannes@cmpxchg.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260318200352.1039011-4-hannes@cmpxchg.org> X-Migadu-Flow: FLOW_OUT X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: CD3ECA0005 X-Stat-Signature: pahztzykqwzbcs7q1hxgztmd7cyfum6x X-Rspam-User: X-HE-Tag: 1773865246-4970 X-HE-Meta: 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 VKZZBxB5 RHbOjmXpRDCSlVfU1m/Jw9DmdOs89Ktfp2DtHLIXpugydQ57AIb6XwF0kT1kiDp7drfUDDs4RoPFjHod4p7CtI0mVV/m72sNlhyhoIjivovv7wluyrg1zP3lMDSUwj62Ct1VMj/zoxINZAIVwMPp1u+ZasvrqegXDRTFn6cElVQDb3FtJ9wavVinFiPrBxV45LwiNCHhrEaYp6dHkpf2wBkRJtSKwUQj60DDBKKS92b5/QXPWBg+C0p1bARPbuYHcTFr7ede3oAoQFwFLVhnxcrPG2jWPkygVXZ4MF8hWzvCa7witSfkjoVO+swXBRuOlfBIv8ZHLx0qtO5bksJjnHbbltg== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Mar 18, 2026 at 03:53:21PM -0400, Johannes Weiner wrote: > Only the MEMCG variant of lock_list_lru() needs to check if there is a > race with cgroup deletion and list reparenting. Move the check to the > caller, so that the next patch can unify the lock_list_lru() variants. > > Reviewed-by: David Hildenbrand (Arm) > Signed-off-by: Johannes Weiner Acked-by: Shakeel Butt