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[147.75.199.223]) by mx.google.com with ESMTPS id n1-20020ac85a01000000b00423c11fec7bsi1185891qta.112.2024.01.08.18.54.26 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 08 Jan 2024 18:54:26 -0800 (PST) Received-SPF: pass (google.com: domain of linux-ext4+bounces-743-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) client-ip=147.75.199.223; Authentication-Results: mx.google.com; dkim=pass header.i=@mit.edu header.s=outgoing header.b=EHAzW17P; spf=pass (google.com: domain of linux-ext4+bounces-743-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) smtp.mailfrom="linux-ext4+bounces-743-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=mit.edu Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ny.mirrors.kernel.org (Postfix) with ESMTPS id 90C601C23175 for ; Tue, 9 Jan 2024 02:54:26 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 4E067DDAA; Tue, 9 Jan 2024 02:53:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=mit.edu header.i=@mit.edu header.b="EHAzW17P" X-Original-To: linux-ext4@vger.kernel.org Received: from outgoing.mit.edu (outgoing-auth-1.mit.edu [18.9.28.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 81DBE6104 for ; Tue, 9 Jan 2024 02:53:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=mit.edu Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mit.edu Received: from cwcc.thunk.org (pool-173-48-82-211.bstnma.fios.verizon.net [173.48.82.211]) (authenticated bits=0) (User authenticated as tytso@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id 4092rSsg010561 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 8 Jan 2024 21:53:32 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mit.edu; s=outgoing; t=1704768813; bh=ZXnsh+p0Y5aT+oTCfe/acfGYOHQyaLsLY5kQyvPE0TI=; h=From:Subject:Date:Message-ID:MIME-Version:Content-Type; b=EHAzW17P+PSyk8ldswo4HRd1VdPwz4kmDDcOelrjdYbq6mCbf6K32WCf9zZg1XDge ijxwXHhPYUwx+00Xhb52cTRHd6TDC06Bsyvb0Yh0po9tbqNtoqqhvaMDHqt0BtgfBl FLEAzpK3vDuCtjTckxI9vLY68rsakidWQvvGhqF8qCJqb8aC/qTdx7u3tvD/dtuR5J KY+AW2xxpNCu0C+uV89v7sSYJ8uTfrF96aIA5/wG9rhWO7SPsEX6TxTNejDXTQqDR6 mCvMYn99ljyMbVBfPYO3Fl6mQwCwXxzR+AZeDDi3YZ05wmGvua8SkECs2zhqJmHVKs VSpLFBgN6Vxag== Received: by cwcc.thunk.org (Postfix, from userid 15806) id 21B1315C0307; Mon, 8 Jan 2024 21:53:28 -0500 (EST) From: "Theodore Ts'o" To: linux-ext4@vger.kernel.org, Ojaswin Mujoo Cc: "Theodore Ts'o" , Ritesh Harjani , linux-kernel@vger.kernel.org, Jan Kara , glandvador@yahoo.com, bugzilla@eyal.emu.id.au Subject: Re: [PATCH 0/1] Fix for recent bugzilla reports related to long halts during block allocation Date: Mon, 8 Jan 2024 21:53:18 -0500 Message-ID: <170476879011.637731.13228432208887255974.b4-ty@mit.edu> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit On Fri, 15 Dec 2023 16:49:49 +0530, Ojaswin Mujoo wrote: > This patch intends to fix the recent bugzilla [1] report where the > kworker flush thread seemed to be taking 100% CPU utilizationa and was > slowing down the whole system. The backtrace indicated that we were > stuck in mballoc allocation path. The issue was only seen kernel 6.5+ > and when ext4 was mounted with -o stripe (or stripe option was > implicitly added due us mkfs flags used). > > [...] Applied, thanks! [1/1] ext4: fallback to complex scan if aligned scan doesn't work commit: a26b6faf7f1c9c1ba6edb3fea9d1390201f2ed50 Best regards, -- Theodore Ts'o