From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id AB38BEA3C55 for ; Thu, 9 Apr 2026 12:39:00 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id EEEF46B008A; Thu, 9 Apr 2026 08:38:59 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id EA06E6B008C; Thu, 9 Apr 2026 08:38:59 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DB5896B0092; Thu, 9 Apr 2026 08:38:59 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id C7DFF6B008A for ; Thu, 9 Apr 2026 08:38:59 -0400 (EDT) Received: from smtpin26.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 74DFE1B7826 for ; Thu, 9 Apr 2026 12:38:59 +0000 (UTC) X-FDA: 84638971998.26.32DA35D Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf04.hostedemail.com (Postfix) with ESMTP id C1C564000A for ; Thu, 9 Apr 2026 12:38:57 +0000 (UTC) Authentication-Results: imf04.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=t4fn9Q4X; spf=pass (imf04.hostedemail.com: domain of brauner@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=brauner@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1775738337; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=1k40QPpjaJJyL5dsAaodvlVj4+rT/6wM2jo73CiSpO8=; b=e89xbxvgFkDsJ9nxq+ZwECVH833ewtZx75DYRlybyYytEYUeNy4/1x71Wbs7Fvd8tLs5eZ +f2E7ZoRxqrcUQfgGBAEOToRhP0I1yUzRsCFJp30onSH6cVHDQxvcTjqrK2eIciCCU0/xM FkJz3ZI9OkEYFuQBc53vXEqERUqXKmA= ARC-Authentication-Results: i=1; imf04.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=t4fn9Q4X; spf=pass (imf04.hostedemail.com: domain of brauner@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=brauner@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1775738337; a=rsa-sha256; cv=none; b=uepdrvW2kYhlxSGL47v2ZGVhCaFjVaxEvV2n80hx2eOL4bD2OJsKR0eqTPww8tfKxpZ48+ ZEB6QTBQ0f5EVj9XgADcUDEH+iEX6BNr+2VMZUdYErH4JOD+dRD2K9skF9yoa6pr383ZuQ 4hk3oh87NQnXO1587bH+/vpFsoWZ9xU= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id C37E6439A8; Thu, 9 Apr 2026 12:38:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0ADE4C19424; Thu, 9 Apr 2026 12:38:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775738336; bh=S1UzqxaXEc/yIE0ufFwghwwUVw6xvXwfGs8iCXCKSJw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=t4fn9Q4XJQe3p+oZ+kJtet9UBjhDHwzuk/79owhpBPBCfJmayqSA4WmNiOQrrKNAw LIDvKeWxhcy5QdHGIdxGNjS+NnUByasX+OJUdfsk0/0FGmDNVO3IkZATnwWOShPh1I gOltWksTcRi75T6wBungyq4UQSuDb0YFpAkKg5A9QhQ4IHrOteT0H1mvZW0FcUu8Z+ YjjaYd1eEqwMt6neauUxdhD7OJzbfFO4xEBnVTz6OGYKq8HJ/IIRYUGOcRTR/litSJ +4foUNO3RJFXQvZjQSqpYecg/G0lJEFL6ZuMiUDjuIPS/1T5mi9sm9SwaN5SWuLBVU wl7xbxf7MjKyA== Date: Thu, 9 Apr 2026 14:38:50 +0200 From: Christian Brauner To: Alban Crequy Cc: Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R . Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Alban Crequy , Peter Xu , Willy Tarreau , linux-kselftest@vger.kernel.org, shuah@kernel.org Subject: Re: [PATCH v2 0/2] mm/process_vm_access: pidfd and nowait support for process_vm_readv/writev Message-ID: <20260409-behoben-gehen-baeb1486fb03@brauner> References: <20260408145436.843538-1-alban.crequy@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20260408145436.843538-1-alban.crequy@gmail.com> X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: C1C564000A X-Stat-Signature: fd1bkucp4jigxz1ej7emffqiqdkik5eh X-Rspam-User: X-HE-Tag: 1775738337-965356 X-HE-Meta: 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 AlHIYLZ+ 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Apr 08, 2026 at 04:54:34PM +0200, Alban Crequy wrote: > This adds two flags to process_vm_readv/writev: > > - PROCESS_VM_PIDFD: refer to the remote process via PID file descriptor > instead of PID. > - PROCESS_VM_NOWAIT: do not block on IO if the memory access causes a > page fault. > > v1: https://lore.kernel.org/lkml/20251118132348.2415603-1-alban.crequy@gmail.com/ Looks good to me, Reviewed-by: Christian Brauner