Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753334AbbKLEcp (ORCPT ); Wed, 11 Nov 2015 23:32:45 -0500 Received: from LGEAMRELO11.lge.com ([156.147.23.51]:39040 "EHLO lgeamrelo11.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753113AbbKLEcn (ORCPT ); Wed, 11 Nov 2015 23:32:43 -0500 X-Original-SENDERIP: 156.147.1.126 X-Original-MAILFROM: minchan@kernel.org X-Original-SENDERIP: 10.177.223.161 X-Original-MAILFROM: minchan@kernel.org From: Minchan Kim To: Andrew Morton Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Michael Kerrisk , linux-api@vger.kernel.org, Hugh Dickins , Johannes Weiner , Rik van Riel , Mel Gorman , KOSAKI Motohiro , Jason Evans , Daniel Micay , "Kirill A. Shutemov" , Shaohua Li , Michal Hocko , yalin.wang2010@gmail.com, Minchan Kim Subject: [PATCH v3 00/17] MADFV_FREE support Date: Thu, 12 Nov 2015 13:32:56 +0900 Message-Id: <1447302793-5376-1-git-send-email-minchan@kernel.org> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5183 Lines: 127 MADV_FREE is on linux-next so long time. The reason was two, I think. 1. MADV_FREE code on reclaim path was really mess. 2. Andrew really want to see voice of userland people who want to use the syscall. A few month ago, Daniel Micay(jemalloc active contributor) requested me to make progress upstreaming but I was busy at that time so it took so long time for me to revist the code and finally, I clean it up the mess recently so it solves the #2 issue. As well, Daniel and Jason(jemalloc maintainer) requested it to Andrew again recently and they said it would be great to have even though it has swap dependency now so Andrew decided he will do that for v4.4. However, there were some concerns, still. * hotness Someone think MADV_FREEed pages are really cold while others are not. Look at detail in decscription of mm: add knob to tune lazyfreeing. * swap dependency In old version, MADV_FREE is equal to MADV_DONTNEED on swapless system because we don't have aged anonymous LRU list on swapless. So there are requests for MADV_FREE to support swapless system. For addressing issues, this version includes new LRU list for hinted pages and tuning knob. With that, we could support swapless without zapping hinted pages instantly. Please, review and comment. I have been tested it on v4.3-rc7 and couldn't find any problem so far. git: git://git.kernel.org/pub/scm/linux/kernel/git/minchan/linux.git branch: mm/madv_free-v4.3-rc7-v3-lazyfreelru In this stage, I don't think we need to write man page. It could be done after solid policy and implementation. * Change from v2 * add new LRU list and tuning knob * support swapless * Change from v1 * Don't do unnecessary TLB flush - Shaohua * Added Acked-by - Hugh, Michal * Merge deactivate_page and deactivate_file_page * Add pmd_dirty/pmd_mkclean patches for several arches * Add lazy THP split patch * Drop zhangyanfei@cn.fujitsu.com - Delivery Failure Chen Gang (1): arch: uapi: asm: mman.h: Let MADV_FREE have same value for all architectures Minchan Kim (16): mm: support madvise(MADV_FREE) mm: define MADV_FREE for some arches mm: free swp_entry in madvise_free mm: move lazily freed pages to inactive list mm: clear PG_dirty to mark page freeable mm: mark stable page dirty in KSM x86: add pmd_[dirty|mkclean] for THP sparc: add pmd_[dirty|mkclean] for THP powerpc: add pmd_[dirty|mkclean] for THP arm: add pmd_mkclean for THP arm64: add pmd_mkclean for THP mm: don't split THP page when syscall is called mm: introduce wrappers to add new LRU mm: introduce lazyfree LRU list mm: support MADV_FREE on swapless system mm: add knob to tune lazyfreeing Documentation/sysctl/vm.txt | 13 +++ arch/alpha/include/uapi/asm/mman.h | 1 + arch/arm/include/asm/pgtable-3level.h | 1 + arch/arm64/include/asm/pgtable.h | 1 + arch/mips/include/uapi/asm/mman.h | 1 + arch/parisc/include/uapi/asm/mman.h | 1 + arch/powerpc/include/asm/pgtable-ppc64.h | 2 + arch/sparc/include/asm/pgtable_64.h | 9 ++ arch/x86/include/asm/pgtable.h | 5 + arch/xtensa/include/uapi/asm/mman.h | 1 + drivers/base/node.c | 2 + drivers/staging/android/lowmemorykiller.c | 3 +- fs/proc/meminfo.c | 2 + include/linux/huge_mm.h | 3 + include/linux/memcontrol.h | 1 + include/linux/mm_inline.h | 83 ++++++++++++++- include/linux/mmzone.h | 16 ++- include/linux/page-flags.h | 5 + include/linux/rmap.h | 1 + include/linux/swap.h | 18 +++- include/linux/vm_event_item.h | 3 +- include/trace/events/vmscan.h | 38 ++++--- include/uapi/asm-generic/mman-common.h | 1 + kernel/sysctl.c | 9 ++ mm/compaction.c | 14 ++- mm/huge_memory.c | 51 +++++++-- mm/ksm.c | 6 ++ mm/madvise.c | 171 ++++++++++++++++++++++++++++++ mm/memcontrol.c | 44 +++++++- mm/memory-failure.c | 7 +- mm/memory_hotplug.c | 3 +- mm/mempolicy.c | 3 +- mm/migrate.c | 28 ++--- mm/page_alloc.c | 3 + mm/rmap.c | 14 +++ mm/swap.c | 128 +++++++++++++++------- mm/swap_state.c | 11 +- mm/truncate.c | 2 +- mm/vmscan.c | 157 ++++++++++++++++++++------- mm/vmstat.c | 4 + 40 files changed, 713 insertions(+), 153 deletions(-) -- 1.9.1 -- 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/