From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vitaly Mayatskikh 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> Cc: sandeen@redhat.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org To: Josef Bacik Return-path: 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 Sender: linux-fsdevel-owner@vger.kernel.org List-ID: 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(-)