From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 54EEB36D4FD for ; Wed, 11 Mar 2026 15:52:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773244344; cv=none; b=h572W7aP0NWfx4yRKZFmCR6vqqGIkW+LqT69k27aTnSQeR5RYh2S7SPEGNHEHUGkYoJyZdCZJcD7XJgxHgRHZzy6lACP9NG0OS0mTD+M9NtaQyox694cnWEs1a6m7i1I3JAvFjpPmmB7paio/t0CkL0gEKD5jkDox6C82iNcBUw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773244344; c=relaxed/simple; bh=eUyvVD6FYd+kMw8ul/+hsYa7OSLo2gHI7iX+J4PvZdA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=BQOukoo27b3fOhmQ4Ov3BYYA9o6NdwN4MQbIoP6wFBHGAqMrsWI9Y73yfyw5jBd3zzzbhJ/WFzTVtjfURqI1ckPLOSlbMV14p1H2sWssT6SZQvMcERvHWz7wf1fAmE/G/E28t+hveYS/xV0QE/04TBqCTos9O70RfkYTw8g9eWc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=hkup4Pao; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="hkup4Pao" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1773244342; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=purWKtahervkQmWpAi/9lFqpQ7reFN3BVta2hICrs2c=; b=hkup4Pao7kaVrhqnp2IB/iDC9jdTqQOufTRzP5seHCEEE7lkezZnC+PVuK2ZhFhld4u6/v otjiiT3oLupsRUVqniUptD1fdQg27UIG8D3us5pFtsoz87jB+vJWBhVy/lnJi7WUJloCvm jCk9PVvcZtyKIGqPPS2fCZsADOpvhoc= Received: from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-399-hN8ZNrUpNL2LP0o8BV-hrg-1; Wed, 11 Mar 2026 11:52:19 -0400 X-MC-Unique: hN8ZNrUpNL2LP0o8BV-hrg-1 X-Mimecast-MFC-AGG-ID: hN8ZNrUpNL2LP0o8BV-hrg_1773244338 Received: from mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.93]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id EE3E018002CB; Wed, 11 Mar 2026 15:52:17 +0000 (UTC) Received: from h1.redhat.com (unknown [10.22.89.69]) by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 3D5F41800107; Wed, 11 Mar 2026 15:52:16 +0000 (UTC) From: Nico Pache To: vincentfu@gmail.com, axboe@kernel.dk, fio@vger.kernel.org Cc: jvozar@redhat.com, jjurca@redhat.com, jhladky@redhat.com, peterx@redhat.com, spetrovi@redhat.com, david@kernel.org Subject: [PATCH v2 2/2] Documentation: update the HOWTO to include the page_fault engine Date: Wed, 11 Mar 2026 09:51:12 -0600 Message-ID: <20260311155114.198006-3-npache@redhat.com> In-Reply-To: <20260311155114.198006-1-npache@redhat.com> References: <20260311155114.198006-1-npache@redhat.com> Precedence: bulk X-Mailing-List: fio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 Document the new page fault engine. Signed-off-by: Nico Pache --- HOWTO.rst | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/HOWTO.rst b/HOWTO.rst index e712ee2e..421e6408 100644 --- a/HOWTO.rst +++ b/HOWTO.rst @@ -2376,6 +2376,11 @@ I/O engine several instances to access the same device or file simultaneously, but allow it for threads. + **page_fault** + I/O engine that uses an mmap region to simulate data transfer by + allocating anonymous memory and copying data on read/write to + intentionally trigger page faults. + File/directory operation engines define how the job operates file or directory. The following types are defined: -- 2.53.0