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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6BF09C3600B for ; Thu, 27 Mar 2025 15:16:09 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1txoxY-0006DX-HB; Thu, 27 Mar 2025 11:15:56 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1txoxN-0006C3-T5 for qemu-devel@nongnu.org; Thu, 27 Mar 2025 11:15:50 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1txoxL-0003ec-AE for qemu-devel@nongnu.org; Thu, 27 Mar 2025 11:15:45 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1743088542; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=Thk88y6erEr4AK1UygtRKbPgcRfcwnG0JVQ/JvoL94Y=; b=h+rRWLD4+lROJa5SMiX2skiI0H9BSv1YPDHzaOhYeGkU4b/s8E2Ac2x9EZwznt2268j1ef OAiV0OxztPWav2bslryL/9s1cgxpHPPKLiIFQMKZm20V5Y/BJ8qi9qz0Thr2r+2AQfA8Bb NomeqO/1X25urkhTithf/eagHlEg/cc= Received: from mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-614-_rIXQvJVOHyPTfyBsDAXGQ-1; Thu, 27 Mar 2025 11:15:38 -0400 X-MC-Unique: _rIXQvJVOHyPTfyBsDAXGQ-1 X-Mimecast-MFC-AGG-ID: _rIXQvJVOHyPTfyBsDAXGQ_1743088537 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (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-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id D1E5F18EBE8F; Thu, 27 Mar 2025 15:15:37 +0000 (UTC) Received: from localhost (unknown [10.2.16.93]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 67D8530001A1; Thu, 27 Mar 2025 15:15:37 +0000 (UTC) Date: Thu, 27 Mar 2025 11:15:36 -0400 From: Stefan Hajnoczi To: Hanna Czenczek Cc: qemu-block@nongnu.org, qemu-devel@nongnu.org, Kevin Wolf Subject: Re: [PATCH 10/15] fuse: Add halted flag Message-ID: <20250327151536.GJ37458@fedora> References: <20250325160529.117543-1-hreitz@redhat.com> <20250325160655.119407-9-hreitz@redhat.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="+ss1bv7OqIf6O+Xr" Content-Disposition: inline In-Reply-To: <20250325160655.119407-9-hreitz@redhat.com> X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Received-SPF: pass client-ip=170.10.133.124; envelope-from=stefanha@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org --+ss1bv7OqIf6O+Xr Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Mar 25, 2025 at 05:06:50PM +0100, Hanna Czenczek wrote: > This is a flag that we will want when processing FUSE requests > ourselves: When the kernel sends us e.g. a truncated request (i.e. we > receive less data than the request's indicated length), we cannot rely > on subsequent data to be valid. Then, we are going to set this flag, > halting all FUSE request processing. >=20 > We plan to only use this flag in cases that would effectively be kernel > bugs. >=20 > (Right now, the flag is unused because libfuse still does our request > processing.) >=20 > Signed-off-by: Hanna Czenczek > --- > block/export/fuse.c | 30 ++++++++++++++++++++++++++++++ > 1 file changed, 30 insertions(+) Reviewed-by: Stefan Hajnoczi --+ss1bv7OqIf6O+Xr Content-Type: application/pgp-signature; name=signature.asc -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEhpWov9P5fNqsNXdanKSrs4Grc8gFAmfla5gACgkQnKSrs4Gr c8g2bAf/eecpB7rKiWIsxJKbVRqvIUNcgSJ+wsCgh7brnFVgrnXwNzIJxvAeC5pc HlbUs1fLlkp4FO7aFRCfiVK+m4KDSuGKjVyCEruQK2twkMIeJ6Gm7GxSaMMKfklV Y3Ktw4sM3Ir/l0EnvE4bpKxpA6yTW8TE83bfBB21+n0hsk65fKAOWE3fFbqHv9zS 74cy0EGqHAWgG6oMUGotSIGiREZYfAvM77RJnnAF7LGBdvCoQyJQIzUDJSWj8jin ji7CDSZAKfcHyYgNJCoQ0X732tEpQLumzZ2G0KdiO39Xu8NGYhHj3TA15FrIrIJZ qMqmsU1XJ7ymrz9abw6P9bHb7SrBxg== =ed34 -----END PGP SIGNATURE----- --+ss1bv7OqIf6O+Xr--