From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (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 CAA302765C5; Tue, 17 Feb 2026 19:16:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.156.1 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771355793; cv=none; b=W3gzEqlpdsmU15WPzjdPVjfuBSiIAXjIir0ESuWOODd3atXIRdqFFDrfV+qap3oMC891GQOfE9t5jwy1QoUqhm7WD4IQoVTM+dt7n/QWkvNFb2gS7GT6xinOVi4gI+Aecnrf0l2LUU1x+PpYsUBFgwk6zIXcIUFr8NEeo+XuTrs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771355793; c=relaxed/simple; bh=y+VH3Y0dwBmEaKN7EVetZJ4yiCkHIhzOvclU+fR9Yyc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=SiF1NEBHFb9GZC9HgTxRlOTNuuA1QEp5Ab3t7iuN3wNGy2vEytYFMN4ptiVB2ibmET7ggiVZTSDICN1BKP6J70a5XQBqNvrG6w1qEHQ9Qrj2J+iGotBKsp4v8ALkjk/NhV49a2EVS0BeF1cjBAOz1AEour8XKm4hW8G9vzjJhnU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; spf=pass smtp.mailfrom=linux.ibm.com; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b=o/v2cGmD; arc=none smtp.client-ip=148.163.156.1 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="o/v2cGmD" Received: from pps.filterd (m0360083.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 61HFF78t3013565; Tue, 17 Feb 2026 19:15:39 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-type:date:from:in-reply-to:message-id:mime-version :references:subject:to; s=pp1; bh=VNMpq4qyh3WYGxKXlPxpMOOQOK3XVP 3jl0fTJEZhqqQ=; b=o/v2cGmDJBZclaH3Apz9H2Lc0UbZc9P/Nh3skMRUCeKyMA BOUm60hRT4KlqWFKAcCtme6tHHCy5GbTN3WIhfteH4xhMleebCTcvHwlWNfL7ot7 815XqgrtpFscGVM+YpJR2984AxAF/7eWHJzMOvLmNoG0oKDr4/QszrE8VummC2VV Ag9DWnF7rEQRVSK5TbdVWXCxPmIY3nKLpFwC56+lGkMjZOEezyJbecxbh28WjQJr cMiaTXtSTxzyH4EKCqR0IxaDucrWebONz/4gSybT2a/s3Jq1Q/4PeKdB5BKv0Kjw 8MIriOmt9N6Jo9Nc7oOIJ347c9p12d7hvBFlkxcQ== Received: from ppma11.dal12v.mail.ibm.com (db.9e.1632.ip4.static.sl-reverse.com [50.22.158.219]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4cajcqx0b1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 17 Feb 2026 19:15:39 +0000 (GMT) Received: from pps.filterd (ppma11.dal12v.mail.ibm.com [127.0.0.1]) by ppma11.dal12v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id 61HJ3ll3030213; Tue, 17 Feb 2026 19:15:38 GMT Received: from smtprelay02.fra02v.mail.ibm.com ([9.218.2.226]) by ppma11.dal12v.mail.ibm.com (PPS) with ESMTPS id 4ccb454hpm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 17 Feb 2026 19:15:37 +0000 Received: from smtpav07.fra02v.mail.ibm.com (smtpav07.fra02v.mail.ibm.com [10.20.54.106]) by smtprelay02.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 61HJFYib50921818 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 17 Feb 2026 19:15:34 GMT Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2514B2004B; Tue, 17 Feb 2026 19:15:34 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 61F6B20043; Tue, 17 Feb 2026 19:15:32 +0000 (GMT) Received: from osiris (unknown [9.111.13.3]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTPS; Tue, 17 Feb 2026 19:15:32 +0000 (GMT) Date: Tue, 17 Feb 2026 20:15:30 +0100 From: Heiko Carstens To: Suren Baghdasaryan Cc: akpm@linux-foundation.org, willy@infradead.org, david@kernel.org, ziy@nvidia.com, matthew.brost@intel.com, joshua.hahnjy@gmail.com, rakie.kim@sk.com, byungchul@sk.com, gourry@gourry.net, ying.huang@linux.alibaba.com, apopple@nvidia.com, lorenzo.stoakes@oracle.com, baolin.wang@linux.alibaba.com, Liam.Howlett@oracle.com, npache@redhat.com, ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org, lance.yang@linux.dev, vbabka@suse.cz, jannh@google.com, rppt@kernel.org, mhocko@suse.com, pfalcato@suse.de, kees@kernel.org, maddy@linux.ibm.com, npiggin@gmail.com, mpe@ellerman.id.au, chleroy@kernel.org, borntraeger@linux.ibm.com, frankja@linux.ibm.com, imbrenda@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, svens@linux.ibm.com, gerald.schaefer@linux.ibm.com, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org Subject: Re: [PATCH v2 3/3] mm: use vma_start_write_killable() in process_vma_walk_lock() Message-ID: <20260217191530.13857Aae-hca@linux.ibm.com> References: <20260217163250.2326001-1-surenb@google.com> <20260217163250.2326001-4-surenb@google.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260217163250.2326001-4-surenb@google.com> X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-GUID: wcqAAen5QtOIh3Yd7KPIhfP50s2xWLqT X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjE3MDE1NiBTYWx0ZWRfX7oqGr8VrV/Xk p0gIknVZDxQC2GBczDROOnBcM7o7b3pKMWShsmSu1vqb+BvlzcCZcclbforXI3g03Tg2w3NQXE0 iXFAV4kar5rcK/dTEoKjXtQ1YydA7DBAYYTXJQ6GINk1YIMDoUkt+7mkJ3MI51bmInQTTszK824 8nC+0GeJPvCKNnOgiTfjClOWWPT+8Lpcfx5vc85/5OZTHkYR01ktJG/0YRg76aGx/X0wf04+agQ 4kI4XL8Z0IXYl+rLKXIZzDCweR6PPYquimZJ7zKZHJhugW/R0Zxnub8iJh9jLTWzQmDmDx2stnO COtshVSmyDhLJ6fSxUHaIBEZ1BEuSi+RgRGyBNoRxTvLU6HRcpoi/biPBkmqE8MvUghRu4fJIvr xZJMzLYZujcCXK+JpPkNmjgX9+7+EQ1UvF4aYXnwqc/76xKkXQpx4u4s86e/o2ezBaAxgc9G67x t92lhnQ8I8WJpFBDkPA== X-Authority-Analysis: v=2.4 cv=UPXQ3Sfy c=1 sm=1 tr=0 ts=6994be5b cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=kj9zAlcOel0A:10 a=HzLeVaNsDn8A:10 a=VkNPw1HP01LnGYTKEx00:22 a=Mpw57Om8IfrbqaoTuvik:22 a=GgsMoib0sEa3-_RKJdDe:22 a=1XWaLZrsAAAA:8 a=28GIsqCL1x42zXYMcZMA:9 a=CjuIK1q_8ugA:10 X-Proofpoint-ORIG-GUID: Atfp6M6HOZik-aY60bN0PvQ41cv5zLBo X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-17_03,2026-02-16_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 suspectscore=0 phishscore=0 impostorscore=0 adultscore=0 bulkscore=0 clxscore=1011 lowpriorityscore=0 priorityscore=1501 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602170156 On Tue, Feb 17, 2026 at 08:32:50AM -0800, Suren Baghdasaryan wrote: > Replace vma_start_write() with vma_start_write_killable() when > process_vma_walk_lock() is used with PGWALK_WRLOCK option. > Adjust its direct and indirect users to check for a possible error > and handle it. > > Signed-off-by: Suren Baghdasaryan > --- > arch/s390/kvm/kvm-s390.c | 5 +++-- > arch/s390/mm/gmap.c | 13 ++++++++++--- > fs/proc/task_mmu.c | 7 ++++++- > mm/pagewalk.c | 20 ++++++++++++++------ > 4 files changed, 33 insertions(+), 12 deletions(-) The s390 code modified with this patch does not exist upstream anymore. It has been replaced with Claudio's huge gmap rewrite.