From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56595) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YGxlG-000340-Dh for qemu-devel@nongnu.org; Thu, 29 Jan 2015 17:40:31 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YGxlC-0006cZ-UQ for qemu-devel@nongnu.org; Thu, 29 Jan 2015 17:40:30 -0500 Received: from mx1.redhat.com ([209.132.183.28]:33270) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YGxlC-0006cH-NR for qemu-devel@nongnu.org; Thu, 29 Jan 2015 17:40:26 -0500 Message-ID: <54CAB6D2.80100@redhat.com> Date: Thu, 29 Jan 2015 17:40:18 -0500 From: Max Reitz MIME-Version: 1.0 References: <1422470338-20465-1-git-send-email-den@openvz.org> <1422470338-20465-5-git-send-email-den@openvz.org> In-Reply-To: <1422470338-20465-5-git-send-email-den@openvz.org> Content-Type: text/plain; charset=iso-8859-15; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH 4/7] block: use fallocate(FALLOC_FL_ZERO_RANGE) in handle_aiocb_write_zeroes List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Denis V. Lunev" Cc: Kevin Wolf , Fam Zheng , Peter Lieven , qemu-devel@nongnu.org, Stefan Hajnoczi On 2015-01-28 at 13:38, Denis V. Lunev wrote: > This efficiently writes zeroes on Linux if the kernel is capable enough. > FALLOC_FL_ZERO_RANGE correctly handles all cases, including and not > including file expansion. > > Signed-off-by: Denis V. Lunev > CC: Max Reitz > CC: Kevin Wolf > CC: Stefan Hajnoczi > CC: Peter Lieven > CC: Fam Zheng > --- > block/raw-posix.c | 15 +++++++++++++-- > configure | 19 +++++++++++++++++++ > 2 files changed, 32 insertions(+), 2 deletions(-) Reviewed-by: Max Reitz