Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935015AbbKTICp (ORCPT ); Fri, 20 Nov 2015 03:02:45 -0500 Received: from LGEAMRELO12.lge.com ([156.147.23.52]:43003 "EHLO lgeamrelo12.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934293AbbKTICn (ORCPT ); Fri, 20 Nov 2015 03:02:43 -0500 X-Original-SENDERIP: 156.147.1.121 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, Andy Lutomirski , Minchan Kim Subject: [PATCH v4 00/16] MADV_FREE support Date: Fri, 20 Nov 2015 17:02:32 +0900 Message-Id: <1448006568-16031-1-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: 4751 Lines: 120 I have been spent a lot of time to land MADV_FREE feature by request of userland people(esp, Daniel and Jason, jemalloc guys. Thanks for the pushing me! ;-) There are some issues from reviewrs. 1) Swap dependency In old version, MADV_FREE is fallback to MADV_DONTNEED on swapless system because we don't have aged anonymous LRU list. So there are requests for MADV_FREE to support on swapless system. For addressing the issue, it includes new LRU list for lazyfree pages. With that, we could support MADV_FREE on swapless system. 2) Hotness Someone think MADV_FREEed pages are really cold while others are not. By judging what it is, it affects reclaim policy. For addressing the issue, it includes new knob "lazyfreeness" like swappiness. Look at detail in decscription of mm: add knob to tune lazyfreeing. 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-v4rc2 In this stage, I don't think we need to write man page. It could be done after solid policy and implementation. * Change from v3 * some bug fix * code refactoring * lazyfree reclaim logic change * reordering patch * Change from v2 * vm_lazyfreeness tuning knob * add new LRU list - Johannes, Shaohua * support swapless - Johannes * 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 (15): 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: 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 | 6 + include/linux/memcontrol.h | 1 + include/linux/mm_inline.h | 85 ++++++++++- include/linux/mmzone.h | 26 +++- include/linux/page-flags.h | 5 + include/linux/rmap.h | 1 + include/linux/swap.h | 19 ++- 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 | 60 +++++++- mm/ksm.c | 6 + mm/madvise.c | 181 ++++++++++++++++++++++ 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 | 7 + mm/rmap.c | 14 ++ mm/swap.c | 84 +++++++++-- mm/swap_state.c | 11 +- mm/vmscan.c | 240 ++++++++++++++++++++---------- mm/vmstat.c | 4 + 39 files changed, 767 insertions(+), 175 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/