From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx165.postini.com [74.125.245.165]) by kanga.kvack.org (Postfix) with SMTP id 69D9E6B00E7 for ; Thu, 17 May 2012 16:13:22 -0400 (EDT) Date: Thu, 17 May 2012 16:13:16 -0400 (EDT) Message-Id: <20120517.161316.302543932768181836.davem@davemloft.net> Subject: Re: [PATCH 13/17] netvm: Set PF_MEMALLOC as appropriate during SKB processing From: David Miller In-Reply-To: <1337266231-8031-14-git-send-email-mgorman@suse.de> References: <1337266231-8031-1-git-send-email-mgorman@suse.de> <1337266231-8031-14-git-send-email-mgorman@suse.de> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: mgorman@suse.de Cc: akpm@linux-foundation.org, linux-mm@kvack.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, neilb@suse.de, a.p.zijlstra@chello.nl, michaelc@cs.wisc.edu, emunson@mgebm.net From: Mel Gorman Date: Thu, 17 May 2012 15:50:27 +0100 > In order to make sure pfmemalloc packets receive all memory > needed to proceed, ensure processing of pfmemalloc SKBs happens > under PF_MEMALLOC. This is limited to a subset of protocols that > are expected to be used for writing to swap. Taps are not allowed to > use PF_MEMALLOC as these are expected to communicate with userspace > processes which could be paged out. > > [a.p.zijlstra@chello.nl: Ideas taken from various patches] > [jslaby@suse.cz: Lock imbalance fix] > Signed-off-by: Mel Gorman Acked-by: David S. Miller -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org