From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from va-2-49.ptr.blmpb.com (va-2-49.ptr.blmpb.com [209.127.231.49]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D53F0402B96 for ; Wed, 8 Jul 2026 08:25:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.127.231.49 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783499146; cv=none; b=kI1Ow0cHCQioxa8cLPTvsTlYx6GqjejVWgQIQnaqqCuwBTNr2B9W/x19aCHsEYzOnL2HoYj7K3b/WJj1Wvt18ukfBr2X6Pps9cGJoXRKSEjko7zE3Aq0ImJu2QW9VSs/7Zqkb3pn2o37HPw5U/CpisDaXikdD0Y9/Py2xIiPC68= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783499146; c=relaxed/simple; bh=hTooJ4gPZijeqiBqs/9NNNxlJIXFJZt3B0cBEjkv3Vc=; h=In-Reply-To:References:Cc:Subject:Date:To:Content-Disposition: Content-Type:From:Message-Id:Mime-Version; b=ZUGJKXB9b3v6PalZQFVvsVQgLCl1SlALOkJdt35jcSoNHdJ7UKSWKrKcU74u/YQh19Uv45DanTVRjAAfrT0ft6JNlFTyQAXlWx1YzeRXrGbl0rBTh+nYzHwWMTEHwGTKNaSFJozRjtnOkRRhpatR3SyWOYXeK96TqhQRIy+s4mw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=fygo.io; spf=pass smtp.mailfrom=fygo.io; dkim=pass (2048-bit key) header.d=fygo-io.20200929.dkim.larksuite.com header.i=@fygo-io.20200929.dkim.larksuite.com header.b=l9HvGLQA; arc=none smtp.client-ip=209.127.231.49 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=fygo.io Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=fygo.io Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=fygo-io.20200929.dkim.larksuite.com header.i=@fygo-io.20200929.dkim.larksuite.com header.b="l9HvGLQA" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; s=s1; d=fygo-io.20200929.dkim.larksuite.com; t=1783499128; h=from:subject:mime-version:from:date:message-id:subject:to:cc: reply-to:content-type:mime-version:in-reply-to:message-id; bh=NNsphr+1jqmVKVU3j3dlJSJyOP8uXrhxf8Uh2IrW1oM=; b=l9HvGLQA38orv0XFcVzsta+AEWGe6TxNs1lNg7LEvAicDuO1Vxgc8r25eGHcaQoie+kv4f 3VjCNB/I+bIAEUgj+3FiuWti/TW9nTSNN1jdXoDfvIWOiqgflCJUwVbkUD+RwPn+UOMv+F 93dQ0qdoBmMA8Tzx/t2c2XLfkqXbbKAPK9VayadFbnLA57xOeAEzcS2maN6ufy5XOyyC7Y rFExWQSSXUJ1wGWq3ObiKfDek8YbBjfFARKAmPoHDCVs4Mihwxxmcoj70ZSYIco9wMhp8J 8XsOjGAtnm5Xe0LXYtdxj9rch3S6uH84p3KQ5kX/Zmh5/yAB8lkztgzCiYSd0w== Received: from studio.local ([120.245.64.95]) by smtp.larksuite.com with ESMTPS; Wed, 08 Jul 2026 08:25:26 +0000 In-Reply-To: <20260706-feat-bcache-v3-1-8824683656ca@gmail.com> Content-Transfer-Encoding: 7bit References: <20260706-feat-bcache-v3-1-8824683656ca@gmail.com> Cc: "Kent Overstreet" , "Coly Li" , , , "Qiliang Yuan" Subject: Re: [PATCH v3] bcache: avoid holding bch_register_lock across cache_set recovery Date: Wed, 8 Jul 2026 16:25:23 +0800 To: "Qiliang Yuan" Content-Disposition: inline Content-Type: text/plain; charset=UTF-8 X-Original-From: Coly Li X-Lms-Return-Path: From: "Coly Li" Message-Id: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 On Mon, Jul 06, 2026 at 10:08:59PM +0800, Qiliang Yuan wrote: > Large-scale bcache device registration and concurrent sysfs access can > hang unrelated tasks for a long time, e.g.: > [snipped] > > Co-developed-by: Qiliang Yuan > Signed-off-by: Qiliang Yuan > Signed-off-by: Jing Wu I just realize this patch was sent out by Qiliang Yuan, but the email address is from realwujing@gmail.com which owned by Jing Wu. How and why does this happen? Coly Li [snipped]