From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755759AbZENQTZ (ORCPT ); Thu, 14 May 2009 12:19:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752947AbZENQTJ (ORCPT ); Thu, 14 May 2009 12:19:09 -0400 Received: from fg-out-1718.google.com ([72.14.220.157]:51659 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752689AbZENQTG (ORCPT ); Thu, 14 May 2009 12:19:06 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer; b=MiYdAIOCx98nzPjiqfs1eaq6oCx9n5ED6PN6sX2J1c7TYdXz7aaNQKmFPglQ/Q5uTU qUkkdVksk4AVu2c4ld2/opmJBR8WdkdpCG9/bqnPNWvvSpgSEWdSMYFInA/Ojep10H7G qTw4uhiIYofhKCJ1DeSSnPFmvn/1KIX3mQTIw= From: Vitaly Mayatskikh To: Josef Bacik Cc: sandeen@redhat.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/2] sys_write() should write all valid data Date: Thu, 14 May 2009 18:18:59 +0200 Message-Id: <1242317939-15392-1-git-send-email-v.mayatskih@gmail.com> X-Mailer: git-send-email 1.6.2.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org There's user-visible misbehavour in sys_write(): when user tries to put down to disk some data, which crosses boundary of existing memory, sys_write() either immediately returns with EFAULT or writes first page(s). Next 2 patches make sys_write()'s behaviour more consistent: it tries now to write down all what it can. Vitaly Mayatskikh (2): Introduce check_readable_bytes() Perform checks in iov_iter_fault_in_readable() with check_readable_bytes() fs/fuse/file.c | 6 ++++-- include/linux/pagemap.h | 35 +++++++++++++++++++++++++++++++++++ mm/filemap.c | 13 +++++++++---- 3 files changed, 48 insertions(+), 6 deletions(-)