Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964827AbcJVPRb (ORCPT ); Sat, 22 Oct 2016 11:17:31 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:38127 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935082AbcJVPR2 (ORCPT ); Sat, 22 Oct 2016 11:17:28 -0400 From: Christoph Hellwig To: akpm@linux-foundation.org Cc: joelaf@google.com, jszhang@marvell.com, chris@chris-wilson.co.uk, joaodias@google.com, linux-mm@kvack.org, linux-rt-users@vger.kernel.org, linux-kernel@vger.kernel.org Subject: reduce latency in __purge_vmap_area_lazy Date: Sat, 22 Oct 2016 17:17:13 +0200 Message-Id: <1477149440-12478-1-git-send-email-hch@lst.de> X-Mailer: git-send-email 2.1.4 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 259 Lines: 6 Hi all, this is my spin at sorting out the long lock hold times in __purge_vmap_area_lazy. It is based on the patch from Joel sent this week. I don't have any good numbers for it, but it survived an xfstests run on XFS which is a significant vmalloc user.