Subject: + mm-remove-lru-parameter-from-__lru_cache_add-and-lru_cache_add_lru-fix.patch added to -mm tree To: mgorman@xxxxxxx,fengguang.wu@xxxxxxxxx,mhocko@xxxxxxx From: akpm@xxxxxxxxxxxxxxxxxxxx Date: Mon, 17 Jun 2013 15:48:44 -0700 The patch titled Subject: mm: Clear page active before releasing pages has been added to the -mm tree. Its filename is mm-remove-lru-parameter-from-__lru_cache_add-and-lru_cache_add_lru-fix.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Mel Gorman <mgorman@xxxxxxx> Subject: mm: Clear page active before releasing pages Active pages should not be freed to the page allocator as it triggers a bad page state warning. Fengguang Wu reported the following bug and bisected it to the patch "mm: remove lru parameter from __lru_cache_add and lru_cache_add_lru" which is currently in mmotm as mm-remove-lru-parameter-from-__lru_cache_add-and-lru_cache_add_lru.patch [ 84.212960] BUG: Bad page state in process rm pfn:0b0c9 [ 84.214682] page:ffff88000d646240 count:0 mapcount:0 mapping: (null) index:0x0 [ 84.216883] page flags: 0x20000000004c(referenced|uptodate|active) [ 84.218697] CPU: 1 PID: 283 Comm: rm Not tainted 3.10.0-rc4-04361-geeb9bfc #49 [ 84.220729] ffff88000d646240 ffff88000d179bb8 ffffffff82562956 ffff88000d179bd8 [ 84.223242] ffffffff811333f1 000020000000004c ffff88000d646240 ffff88000d179c28 [ 84.225387] ffffffff811346a4 ffff880000270000 0000000000000000 0000000000000006 [ 84.227294] Call Trace: [ 84.227867] [<ffffffff82562956>] dump_stack+0x27/0x30 [ 84.229045] [<ffffffff811333f1>] bad_page+0x130/0x158 [ 84.230261] [<ffffffff811346a4>] free_pages_prepare+0x8b/0x1e3 [ 84.231765] [<ffffffff8113542a>] free_hot_cold_page+0x28/0x1cf [ 84.233171] [<ffffffff82585830>] ? _raw_spin_unlock_irqrestore+0x6b/0xc6 [ 84.234822] [<ffffffff81135b59>] free_hot_cold_page_list+0x30/0x5a [ 84.236311] [<ffffffff8113a4ed>] release_pages+0x251/0x267 [ 84.237653] [<ffffffff8112a88d>] ? delete_from_page_cache+0x48/0x9e [ 84.239142] [<ffffffff8113ad93>] __pagevec_release+0x2b/0x3d [ 84.240473] [<ffffffff8113b45a>] truncate_inode_pages_range+0x1b0/0x7ce [ 84.242032] [<ffffffff810e76ab>] ? put_lock_stats.isra.20+0x1c/0x53 [ 84.243480] [<ffffffff810e77f5>] ? lock_release_holdtime+0x113/0x11f [ 84.244935] [<ffffffff8113ba8c>] truncate_inode_pages+0x14/0x1d [ 84.246337] [<ffffffff8119b3ef>] evict+0x11f/0x232 [ 84.247501] [<ffffffff8119c527>] iput+0x1a5/0x218 [ 84.248607] [<ffffffff8118f015>] do_unlinkat+0x19b/0x25a [ 84.249828] [<ffffffff810ea993>] ? trace_hardirqs_on_caller+0x210/0x2ce [ 84.251382] [<ffffffff8144372e>] ? trace_hardirqs_on_thunk+0x3a/0x3f [ 84.252879] [<ffffffff8118f10d>] SyS_unlinkat+0x39/0x4c [ 84.254174] [<ffffffff825874d6>] system_call_fastpath+0x1a/0x1f [ 84.255596] Disabling lock debugging due to kernel taint The problem was that a page marked for activation was released via pagevec. This patch clears the active bit before freeing in this case. Signed-off-by: Mel Gorman <mgorman@xxxxxxx> Reported-and-Tested-by: Fengguang Wu <fengguang.wu@xxxxxxxxx> Tested-by: Michal Hocko <mhocko@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/swap.c | 3 +++ 1 file changed, 3 insertions(+) diff -puN mm/swap.c~mm-remove-lru-parameter-from-__lru_cache_add-and-lru_cache_add_lru-fix mm/swap.c --- a/mm/swap.c~mm-remove-lru-parameter-from-__lru_cache_add-and-lru_cache_add_lru-fix +++ a/mm/swap.c @@ -739,6 +739,9 @@ void release_pages(struct page **pages, del_page_from_lru_list(page, lruvec, page_off_lru(page)); } + /* Clear Active bit in case of parallel mark_page_accessed */ + ClearPageActive(page); + list_add(&page->lru, &pages_to_free); } if (zone) _ Patches currently in -mm which might be from mgorman@xxxxxxx are linux-next.patch mm-page_alloc-factor-out-setting-of-pcp-high-and-pcp-batch.patch mm-page_alloc-prevent-concurrent-updaters-of-pcp-batch-and-high.patch mm-page_alloc-insert-memory-barriers-to-allow-async-update-of-pcp-batch-and-high.patch mm-page_alloc-protect-pcp-batch-accesses-with-access_once.patch mm-page_alloc-convert-zone_pcp_update-to-rely-on-memory-barriers-instead-of-stop_machine.patch mm-page_alloc-when-handling-percpu_pagelist_fraction-dont-unneedly-recalulate-high.patch mm-page_alloc-factor-setup_pageset-into-pageset_init-and-pageset_set_batch.patch mm-page_alloc-relocate-comment-to-be-directly-above-code-it-refers-to.patch mm-page_alloc-factor-zone_pageset_init-out-of-setup_zone_pageset.patch mm-page_alloc-in-zone_pcp_update-uze-zone_pageset_init.patch mm-page_alloc-rename-setup_pagelist_highmark-to-match-naming-of-pageset_set_batch.patch mm-vmscan-limit-the-number-of-pages-kswapd-reclaims-at-each-priority.patch mm-vmscan-obey-proportional-scanning-requirements-for-kswapd.patch mm-vmscan-flatten-kswapd-priority-loop.patch mm-vmscan-decide-whether-to-compact-the-pgdat-based-on-reclaim-progress.patch mm-vmscan-do-not-allow-kswapd-to-scan-at-maximum-priority.patch mm-vmscan-have-kswapd-writeback-pages-based-on-dirty-pages-encountered-not-priority.patch mm-vmscan-block-kswapd-if-it-is-encountering-pages-under-writeback.patch mm-vmscan-block-kswapd-if-it-is-encountering-pages-under-writeback-fix.patch mm-vmscan-block-kswapd-if-it-is-encountering-pages-under-writeback-fix-2.patch mm-vmscan-check-if-kswapd-should-writepage-once-per-pgdat-scan.patch mm-vmscan-move-logic-from-balance_pgdat-to-kswapd_shrink_zone.patch mm-vmscan-stall-page-reclaim-and-writeback-pages-based-on-dirty-writepage-pages-encountered-v3.patch mm-vmscan-stall-page-reclaim-after-a-list-of-pages-have-been-processed-v3.patch mm-vmscan-set-zone-flags-before-blocking.patch mm-vmscan-move-direct-reclaim-wait_iff_congested-into-shrink_list.patch mm-vmscan-treat-pages-marked-for-immediate-reclaim-as-zone-congestion.patch mm-vmscan-take-page-buffers-dirty-and-locked-state-into-account-v3.patch fs-nfs-inform-the-vm-about-pages-being-committed-or-unstable.patch mm-add-tracepoints-for-lru-activation-and-insertions.patch mm-pagevec-defer-deciding-what-lru-to-add-a-page-to-until-pagevec-drain-time.patch mm-activate-pagelru-pages-on-mark_page_accessed-if-page-is-on-local-pagevec.patch mm-remove-lru-parameter-from-__pagevec_lru_add-and-remove-parts-of-pagevec-api.patch mm-remove-lru-parameter-from-__lru_cache_add-and-lru_cache_add_lru.patch mm-remove-lru-parameter-from-__lru_cache_add-and-lru_cache_add_lru-fix.patch mm-fix-the-tlb-range-flushed-when-__tlb_remove_page-runs-out-of-slots.patch mm-introduce-helper-function-mem_init_print_info-to-simplify-mem_init.patch mm-kill-global-variable-num_physpages.patch documentation-update-address_space_operations.patch documentation-document-the-is_dirty_writeback-aops-callback.patch fs-bump-inode-and-dentry-counters-to-long.patch super-fix-calculation-of-shrinkable-objects-for-small-numbers.patch dcache-convert-dentry_statnr_unused-to-per-cpu-counters.patch dentry-move-to-per-sb-lru-locks.patch dcache-remove-dentries-from-lru-before-putting-on-dispose-list.patch mm-new-shrinker-api.patch shrinker-convert-superblock-shrinkers-to-new-api.patch list-add-a-new-lru-list-type.patch inode-convert-inode-lru-list-to-generic-lru-list-code.patch dcache-convert-to-use-new-lru-list-infrastructure.patch list_lru-per-node-list-infrastructure.patch list_lru-per-node-api.patch shrinker-add-node-awareness.patch vmscan-per-node-deferred-work.patch fs-convert-inode-and-dentry-shrinking-to-be-node-aware.patch xfs-convert-buftarg-lru-to-generic-code.patch xfs-rework-buffer-dispose-list-tracking.patch xfs-convert-dquot-cache-lru-to-list_lru.patch fs-convert-fs-shrinkers-to-new-scan-count-api.patch drivers-convert-shrinkers-to-new-count-scan-api.patch i915-bail-out-earlier-when-shrinker-cannot-acquire-mutex.patch shrinker-convert-remaining-shrinkers-to-count-scan-api.patch hugepage-convert-huge-zero-page-shrinker-to-new-shrinker-api.patch shrinker-kill-old-shrink-api.patch list_lru-dynamically-adjust-node-arrays.patch zbud-add-to-mm.patch zswap-add-to-mm.patch zswap-add-documentation.patch mm-memmap_init_zone-performance-improvement.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html