From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=95.215.58.26 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793951999; b=ZMfHNUrFQczcO5eyFSg64vcQY2VOQOvHMp0vGPpaYpHaEjJ0X2ryHgTCCGqBJOTVia5O Qm8LtrId20fLC/tP++G9au6J9r7KGqFvq1ZOc79CAjnAHQVR1gnTqSERJeip7pBe8jEt2 MjOsZ97NwwTf+O1riAl400Ea/nCyJfgnju0eBv9Nsn8rl4+2uLuV+6VKnQu+yk6+EIeyR Z6miZPvfw6FwP49DGr7K8zWHQE7dtaAghd+cuUHyj3vQKNHFoFWbjkSG37GznWKt1yW2j w5e3yCaYdKgGW/vqu8Bdrf4NTbHbRxNKgH/APW39Piqt8xIIRmr/XI7CtUTAuBm8g7g== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793951999; h=DMARC-Filter:X-Envelope-To:DKIM-Signature:X-Envelope-To:Received: X-Mizu-Trace-ID:X-Migadu-Flow:Date:From:To:Cc:Subject:Message-ID: References:MIME-Version:Content-Type:Content-Disposition:In-Reply-To; bh=qdnMAlZZHT0XekQPrSCiPCqqcTykoSAZA6qRfBxzlM4=; b=WpUpevKzmuyLxnmXQ2SwoSFCqraOs6GagIM9CFOeLRrwKdcEmQHz/a1LScIQpAtkqwQC ikrGSE+fN77Cf0AVP2IrI1+1+kyB3zxxhEEG9fGYjOs255r+tBUyrSADHKPojzpWI0VIL gaxv+wdBUfLchUxUdZpz5DYdjp6yUmb7HWTPNR8J66ugJlkS3W1GGh5TRVNSqqOKAVaG7 +ZatS5Xi+/gV0A0+WYZrv8Ui3knuBvW2Q1yH1rA8ZkPB2EJD61aHKsWRxrduov0Kr3ZTi mgl1MS51OoMZtfiaZco/3G6SsEXgzLcIXvfHTrk4y7oFX/5+FdEaF1a2oqk80+YzSfg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b="lf/nuMDL"; arc=none smtp.remote-ip=95.215.58.26 Received: from mta1.migadu.com (out-26.mta1.migadu.com [95.215.58.26]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D72F5606D806 for ; Fri, 6 Nov 2026 07:59:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org D72F5606D806 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=lf/nuMDL X-Envelope-To: rcu@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=kjWEZaRnpbQPyxgJ4wJyDqlnc6ape3Q8i+3y7DTnhuw=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1793951996; v=1; x=1794556796; b=lf/nuMDLhdHEGz7N/90PMi8Zhq1R4O7Q2gfomdmMKV/p5eAr+mABjvFH92eWmk72Gn5lMgdh Ox+q1+gqywov5PzBo/b+f8XRdS9W8X7HsJgSjmpRrcxI4IYM2AV+MD79M+vD2jB8mqbJTvips8n fS9+wRImgSdkEeHpoaq3OA+s= X-Envelope-To: rcu@vger.kernel.org Received: by smtp.migadu.com with ESMTPS id 8a365bbfc61020ef; Fri, 06 Nov 2026 07:59:56 +0000 X-Mizu-Trace-ID: 8a365bbfc61020ef X-Migadu-Flow: FLOW_OUT Date: Fri, 6 Nov 2026 15:59:45 +0800 From: Hao Li To: Harry Yoo Cc: Zhan Xusheng , vbabka@kernel.org, urezki@gmail.com, paulmck@kernel.org, qiang.zhang@linux.dev, akpm@linux-foundation.org, cl@gentwo.org, rientjes@google.com, roman.gushchin@linux.dev, linux-mm@kvack.org, rcu@vger.kernel.org, linux-kernel@vger.kernel.org, zhanxusheng@xiaomi.com Subject: Re: [PATCH 1/2] mm/slab: restore the rcutree. prefix of the kvfree_rcu parameters Message-ID: References: <20261028134647.3176080-1-zhanxusheng1024@gmail.com> X-Mailing-List: rcu@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Mon, Nov 02, 2026 at 02:33:43PM +0000, Harry Yoo wrote: > I adjusted my feedback. End result: > > mm/slab: restore the rcutree. prefix of the kvfree_rcu parameters > > The move of kvfree_rcu() to mm/slab_common.c dropped the "rcutree." > MODULE_PARAM_PREFIX, so rcu_min_cached_objs and > rcu_delay_page_cache_fill_msec became slab_common.* and the documented > rcutree.* names are silently ignored. Restore the prefix; the > slab_common.* names, never documented, stop working. > > Fixes: bbe658d65802 ("mm/slab: Move kvfree_rcu() into SLAB") > Cc: stable@vger.kernel.org > Signed-off-by: Zhan Xusheng > Reviewed-by: Harry Yoo (Meta) > Link: https://patch.msgid.link/20261028134647.3176080-1-zhanxusheng1024@gmail.com > Signed-off-by: Harry Yoo (Meta) Reviewed-by: Hao Li -- Thanks, Hao