From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from xmbghk7.mail.qq.com (xmbghk7.mail.qq.com [43.163.128.43]) (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 2219747DD5C; Tue, 12 May 2026 07:24:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=43.163.128.43 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778570689; cv=none; b=DWNYyGhtuv3IKgPPnSlhnOl6ocNaSoZGTtm33hOQeOSTltA0A3cLx8kXLKIwslsykEm/1Y6qTwatQ4Il7A6RnKW5Ec+2azub0wNUTyfoEP7o7KJjuPhLDsBm9k8ALk6rC8lebu27pmZnLQaatbhnCWrFrLP86K3pKkv2FDdmaOI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778570689; c=relaxed/simple; bh=wEyDr/bRW18sk+Eh6qeSY0G5GBCNnNAFInLo/yOFKUc=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=sJoclmXpT/AU5P6QIzj4xmL2HaF2aQrUcDqYoX7DJlOg/eGbB9E3lzhdHUUsK/Facp/6q9VtunVQjdxr4GP6pz6nuka8Tv4WkRe3MohVQw9AAxEJ+YES4GY8POEOJSf++bLOEazQWIBkGlE4/LugjUjdSZF9FZDPFAcGQcARe1A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com; spf=pass smtp.mailfrom=qq.com; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b=KTE+l0RE; arc=none smtp.client-ip=43.163.128.43 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qq.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b="KTE+l0RE" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1778570667; bh=vLBmIVgGqAm1WgQmG2CCAsu20EJzohul4rqXqPsB24w=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=KTE+l0RELO6nyyJN3zhI4UCsnTlSEqyQ8hXGxJIrpyI+ENz8HKuR/mhvJC0UPCYfE pm+gP6+kfBVf+dnCYyrVKUy8GyubzOMLtkVrlLY2QvhDy5dI2IPp2RyP2PfKZWSn12 amyCS77BMDy9P7RMEMON0xmW5RdKojy1GNpm/1MA= Received: from [10.46.141.45] ([36.112.3.68]) by newxmesmtplogicsvrsza73-0.qq.com (NewEsmtp) with SMTP id 618BE4F8; Tue, 12 May 2026 15:24:24 +0800 X-QQ-mid: xmsmtpt1778570664tqfecap3n Message-ID: X-QQ-XMAILINFO: NGZp1yYNf7Y+Zap4hDs08HaF9zaVs0jQUNat9/uAQOz37raUQURZq4YA3VcyqL jp7SC867tbUdYkbU2Iyvagw4v/z9+peY6LYMDvbsHEUABQSLIBCSR/8adNZL2DuA9Vy4+K5hDe3l Hj1UO7T93RrfIkothez9lPMDm6r7QGhjUaVDlqomBgw8t04Wic8H3sDUhleBKMubQeXr5VeMZTsH 4hlbZm1H4L3Iy0t0T1tNu7ErtKCTvoTOo2dSHaGq1Y3GI3EFaS+jwHXyDWRlaKSgdlpu8hgmb4KV FiDv7I5G6JeooJsOG+wXcTv9TA5o/WUZSHKhQqieUZuZDDUZmAaGy7TklbTNGLOOg39gTGPD07tS QLfBOaVqU31xFiOQhBxHFNVpDLYrmrQ8tZZ2oEP0OLTW3jcteg4CemI+U2kpc/y9mr3YAFmij8y3 QS/rKos6zcEk+ffoSFRgDeYkDQ9e7goL6IWDdPTbkkCZUL7IpIEv2TfOCaff9qcoRB55r2ifGo5d XccaXYDTD4KrcWNukBZWdOcTC/QB6R0hHq76anGBsOVVAb0hbg1AYC/Ddw8PWyZK6MCx5Tf2tGBD 7cS1+t6ogkYPWpgMh2cU+Wr0auE+RVsDe3Yog0XHdwcPjO1mQbDwJq6RgwKYIZzEwe7RiTnG+7hd B8ZWq9Puaz/PqDPu6SUwas82INSo5sK+mOgHpq1zYoF5bMqSpTtaOa5eEfof8cU35uEEsZgbG+CU c3XJ5RHSCYcbEWnTR3rTPwc4GhoEcm+gfDNq63C8reFUNOOcV596oXLeGDBitE0ZGTAx1FOpib6F j6irYa468LB3Uf1GxSHrG5+KovLQWbGP55HyVutTJDs42KmSccvq/Sz59vQ2//FlRgUQ4FvH2EnJ aRhQWOb4TrG9GSu4JI0PZ+mqFvP7TiZT4lZ4nZ7tomtI1AI/w0W5uatsgQjSwi5aNyvDJ4iO2Xia ZnUFpzGEqVuZxMVibvgoKm+TwZdAnvOgwpofh5OD9EOUATBhBfzPTNch+4OvveCF7RBEMd930JAw 9VbHj5Aa20yo8/LwoT X-QQ-XMRINFO: NyFYKkN4Ny6FuXrnB5Ye7Aabb3ujjtK+gg== X-OQ-MSGID: <49f042ac-7bb8-45d3-9e43-97ab00dd0a96@qq.com> Date: Tue, 12 May 2026 15:24:24 +0800 Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mm/mremap: unmap full fixed target for multi-VMA moves To: Lorenzo Stoakes , Jann Horn Cc: Andrew Morton , "Liam R. Howlett" , Vlastimil Babka , Shuah Khan , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org References: From: Fujunjie In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 5/12/2026 12:30 AM, Lorenzo Stoakes wrote: > Yeah let's go with that then I think :) Thanks Lorenzo and Jann. I agree that the patch as posted goes in the wrong direction by treating source gaps as ranges that should be propagated to the destination. Please drop this patch. If disallowing source gaps in this multi-VMA move path still sounds right, I can look into a v2/new patch that rejects sparse source ranges up front instead. Thanks, fujunjie