From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=95.215.58.2 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794319124; b=a7XNT19pgiRgc5Qe31Bdy23ZG9Yt9It8h/3JFh79hwDPAJ6KlR0HO8Nu/ey00xu5Mmna msR0BMMKuzxmQuMY23hS3EVPU7jfK0aKSmDAh7DNWk/lJic/aMd6UVly/sRya8ZopUTlf evwmfAos5dpDr+F2cHVh3WeQnuuzve0S0drImTF0DxUH0k9EnceTFv5Q9HKh0x3yUrdAx CxQ05jLVEnT3YvxXpldvqLuFzOZHN/t/uSP/ENziMZmd1M49jhhPbM2KPNjnn5jeMoJtn 0YqrEydcs0whXZPMsBCS6qpVvpadeygxONaKnbUBOPB10cNQWD5BNagPIOAXYURV11w== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794319124; h=DMARC-Filter:X-Envelope-To:DKIM-Signature:X-Envelope-To:Received: X-Mizu-Trace-ID:X-Migadu-Flow:From:To:Cc:Subject:Date:Message-ID: X-Mailer:In-Reply-To:References:MIME-Version:Content-Type: Content-Transfer-Encoding; bh=4AuBCb/I7k73HlQgjzDYi07i0QVcp76kIK/7/UWRP9M=; b=5XgesfvtT7V+jK8ZVlDpptjRiVEgUVgWe9dcQsyEnNeAZ4TRz23R6AUJ+17fiZuQp/aM NBf2C9Ct7XiRrRnOBP3enLWlS5x3xA/2JXEFsE5LzW9LfETaiwd3dPfpnpJ3Ebya8V6dp dMoLVLQPneBXXkmwsidWzQq3wMmKGW2zgFWk/48CdGc54kNjJv0GAfuq+46wQjJ/5ghC2 zN9X4Kj1euh0whjzv1ig3vlR97fiBw1/mP2NkXnlcEjw/3h3dCthYPbaQUgGYbAX/7n2G 4HjJyhUM8L/u0sxrcEevS4us4jDsbJP0DZ+XnpQiVnbNynM/B88zUmpYa9XdMfml2WQ== 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=g7jmzUK0; arc=none smtp.remote-ip=95.215.58.2 Received: from mta1.migadu.com (out-2.mta1.migadu.com [95.215.58.2]) (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 A7F9E606A321 for ; Tue, 10 Nov 2026 13:58:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org A7F9E606A321 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=g7jmzUK0 X-Envelope-To: linux-trace-kernel@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=4AuBCb/I7k73HlQgjzDYi07i0QVcp76kIK/7/UWRP9M=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1794319120; v=1; x=1794923920; b=g7jmzUK0d/G3BvqcNkqamkKsfKfjCzjV+abGar/cbKfi8lCffnKVGlS+BDf9zv+dSjxtSI+q CvBjp53iEChofoerEKpjDOV14gGPTeuNCTU4ZShT1gKUKrWKjy3OVvLQNeQRcEMHNKKu8XXJckr O7zs8C9P+sBOxpKZY42/axD4= X-Envelope-To: linux-trace-kernel@vger.kernel.org Received: by smtp.migadu.com with ESMTPS id 68181a37af8247a7; Tue, 10 Nov 2026 13:58:38 +0000 X-Mizu-Trace-ID: 68181a37af8247a7 X-Migadu-Flow: FLOW_OUT From: Qiliang Yuan To: Vlastimil Babka , Johannes Weiner Cc: Qiliang Yuan , Andrew Morton , Kairui Song , Qi Zheng , Shakeel Butt , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu , Baoquan He , Baolin Wang , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Brendan Jackman , Zi Yan , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Subject: Re: [PATCH v2 0/2] mm/compaction: stop repeating failed async compaction on every THP fault Date: Tue, 10 Nov 2026 08:58:24 -0500 Message-ID: <20261110135824.3264904-1-qiliang.yuan@linux.dev> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261102-bug-mm-thp-async-compact-defer-v2-0-b407e974db54@gmail.com> References: <20261102-bug-mm-thp-async-compact-defer-v2-0-b407e974db54@gmail.com> X-Mailing-List: linux-trace-kernel@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=UTF-8 Content-Transfer-Encoding: 8bit Hi Vlastimil, Johannes, Could you share your view on this series when you have time? One known issue in v2: the cc->mode != MIGRATE_ASYNC check added to 2/2 blocks clearing stale skip hints once sync compaction is fully deferred, so local THP may not recover after the pins are released. I'd drop it in v3, but won't send one before hearing from you. Thanks, Qiliang