From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792765721; b=ixUOohvyPBvPi5HEK1TbVmJOXefLk7WHqBNgt2125RCrf6Qw4ZTWVymRReNX68u656nU KsTsei+ILtv/X3IXKn9yhBP1y6y6LvIDsvMm7VIgbPSlb/H5bX6D/tOGkH4wn8y3HWqNB 5FJeM1j3Hl3fMkKRQXQaOMneNJrJB5EgTqdpaIX5TakArU1Khb8Gq66keMwUfpbNjEeDL LrvkIYhg1eyyf3wor3bZuCZ1eH51gbwOQL8bJtky1gpqBEbdEpO7vxSLkbnfLY/kc1GwZ GGwzBPz2gbQv/0S3UTZZvASuKSp1++bS4JOW26M2ivT46p4T1tRyBX8TSBkN3XasXDQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792765721; h=Received:DKIM-Signature:Date:From:To:Cc:Subject:Message-ID: References:MIME-Version:Content-Type:Content-Disposition:In-Reply-To; bh=tYNDgS4FomXUNTZJNpkRvBZq74Kpg9AjMcOmrrvyONo=; b=rqEw0nokE75VmXSKcjq20hxmupBbl7n7XSgx4XDEkSxODKfpshCvFw6A9b7P4qNVJ710 9x6CTiNndw2g/9rYKwZqcsUJ29c+Wyp35Y9c4YsR/p4gIqgkJ6bELDi88csuwnyxyodFG lrOGLeNyf/bleGqbblImYHTqpss1wDGfLB+Q47i7rboFV8GK9wdwuYuNefkYCmKZwLdjI isYvJzU8qfFYvdTrT8YDy7smV53dCaRnt4PWS6OyL9A3n4+WydMJSEvXQwfov+vKTBXh6 jyXw9brP4WWjPLzoCwbUKstssCgkSn9ID1G7+UVfx3uvujXiNtr1SkLlzMYWAaIHGRw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=WcT546oA; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 11A91606A31A for ; Fri, 23 Oct 2026 14:28:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=WcT546oA Received: by smtp.kernel.org (Postfix) with ESMTPSA id 27DF81F01825; Fri, 23 Oct 2026 14:28:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792765720; bh=tYNDgS4FomXUNTZJNpkRvBZq74Kpg9AjMcOmrrvyONo=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=WcT546oAtz2NoyHVdhlcvqJKm4GjbeNvAjEtqDQfOsBT42lUpW2+FtAN4IhqCbXgZ WjNeKIJToUsfoorYVo5RgDVK4gxldbsfrQSlcu7b3gTOZdPotOMt0vFF7IBJgWxQly C9deb4IKsXnplNky9SWj5qd8Ib2+6Z3S+KEMbGz70WSVHa55IFhkwHouI0RRGZ9wF7 9ew3rHb5Q93zSwKlsE0IS7gwNRBNIxrMKtHZSlLdeqpZbz0PjQiDBRVCl26FzjWBm5 S+paaMUasLNeOpswdgGvM2H6qTBoagPr5/1qfsZ/gcTpbMzxcNHlMRor1wiKZDr6lZ /WGLpNq11xSoA== Date: Fri, 23 Oct 2026 15:28:34 +0100 From: "Lorenzo Stoakes (ARM)" To: Luiz Capitulino Cc: Andrew Morton , "Liam R. Howlett" , Vlastimil Babka , Jann Horn , Pedro Falcato , David Hildenbrand , Jakub Matena , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [REGRESSION] mremap() fails VMA expansion when VM_MIXEDMAP is set Message-ID: References: <20261023023106.515365-1-luizcap@redhat.com> <538f7c6f-3e16-4ab9-9b79-232b34fb4d3e@redhat.com> X-Mailing-List: linux-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=us-ascii Content-Disposition: inline In-Reply-To: <538f7c6f-3e16-4ab9-9b79-232b34fb4d3e@redhat.com> On Fri, Oct 23, 2026 at 08:15:17AM -0400, Luiz Capitulino wrote: > > > On 10/23/26 4:18 AM, Lorenzo Stoakes (ARM) wrote: > > I'll dig in + get back to you. > > Thanks Lorenzo, I really appreciate it. You're welcome! This report looks valid, essentially a pure expand should be allowed for mixed mappings (with mremap() having already asserted it is a valid expansion). Writing a fix now. -- Cheers, Lorenzo