Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932375Ab0FGLVf (ORCPT ); Mon, 7 Jun 2010 07:21:35 -0400 Received: from [18.85.46.34] ([18.85.46.34]:37754 "EHLO bombadil.infradead.org" rhost-flags-FAIL-FAIL-OK-OK) by vger.kernel.org with ESMTP id S932227Ab0FGLUi (ORCPT ); Mon, 7 Jun 2010 07:20:38 -0400 Message-Id: <20100607110654.606530953@chello.nl> User-Agent: quilt/0.48-1 Date: Mon, 07 Jun 2010 13:06:54 +0200 From: Peter Zijlstra To: Andrea Arcangeli , Avi Kivity , Thomas Gleixner , Rik van Riel , Ingo Molnar , akpm@linux-foundation.org, Linus Torvalds Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Benjamin Herrenschmidt , David Miller , Hugh Dickins , Mel Gorman , Nick Piggin , Peter Zijlstra , "Paul E. McKenney" Subject: [PATCH 00/28] mm: preemptibility -v3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1293 Lines: 32 This patch-set makes part of the mm a lot more preemptible. It converts i_mmap_lock and anon_vma->lock to mutexes and makes mmu_gather fully preemptible. The main motivation was making mm_take_all_locks() preemptible, since it appears people are nesting hundreds of spinlocks there. The side-effects are that can finally make mmu_gather preemptible, something which lots of people have wanted to do for a long time. It also gets us anon_vma refcounting, which seems to result in a nice cleanup of the anon_vma lifetime rules wrt KSM and compaction. This patch-set it build and boot-tested on x86_64 (a previous version was also tested on Dave's Niagra2 machines, and I suppose s390 did too when Martin provided the conversion patch for his arch). There are no known architectures left unconverted, although some arch code never did see a compiler (superh and um come to mind). Can we move this work forwards, or is there anything people would want to see done? [ The series includes Rik's latest patches to the same area for convenience ] -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/