From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mailout1.w1.samsung.com ([210.118.77.11]:27369 "EHLO mailout1.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756706AbaDHKvn (ORCPT ); Tue, 8 Apr 2014 06:51:43 -0400 Received: from eucpsbgm2.samsung.com (unknown [203.254.199.245]) by mailout1.w1.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0N3P007AHKU41D00@mailout1.w1.samsung.com> for linux-media@vger.kernel.org; Tue, 08 Apr 2014 11:51:40 +0100 (BST) Message-id: <5343D4BD.4090809@samsung.com> Date: Tue, 08 Apr 2014 12:51:41 +0200 From: Marek Szyprowski MIME-version: 1.0 To: Kamil Debski , 'John Sheu' , linux-media@vger.kernel.org Cc: m.chehab@samsung.com, posciak@google.com, arun.m@samsung.com, kgene.kim@samsung.com, Hans Verkuil Subject: Re: [PATCH 4/4] v4l2-mem2mem: allow reqbufs(0) with "in use" MMAP buffers References: <1394578325-11298-1-git-send-email-sheu@google.com> <1394578325-11298-5-git-send-email-sheu@google.com> <06c801cf526f$7b0498a0$710dc9e0$%debski@samsung.com> In-reply-to: <06c801cf526f$7b0498a0$710dc9e0$%debski@samsung.com> Content-type: text/plain; charset=UTF-8; format=flowed Content-transfer-encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: Hello, On 2014-04-07 16:41, Kamil Debski wrote: > Pawel, Marek, > > Before taking this to my tree I wanted to get an ACK from one of the > videobuf2 maintainers. Could you spare a moment to look through this > patch? It's not a bug, it is a feature. This was one of the fundamental design requirements to allow applications to track if the memory is used or not. Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland