Subject: + mm-page_alloc-fair-zone-allocator-policy-v2-fix-2.patch added to -mm tree
To: hannes@xxxxxxxxxxx,khilman@xxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Fri, 23 Aug 2013 14:51:02 -0700
The patch titled
Subject: mm: page_alloc: use vmstats for fair zone allocation batching fix
has been added to the -mm tree. Its filename is
mm-page_alloc-fair-zone-allocator-policy-v2-fix-2.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-page_alloc-fair-zone-allocator-policy-v2-fix-2.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-page_alloc-fair-zone-allocator-policy-v2-fix-2.patch
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------------------------------------------------------
From: Johannes Weiner <hannes@xxxxxxxxxxx>
Subject: mm: page_alloc: use vmstats for fair zone allocation batching fix
Initialize the per-cpu counters before modifying them. Otherwise:
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 3.11.0-rc5-next-20130816 (khilman@paris) (gcc version 4.7.2 (Ubuntu/Linaro 4.7.2-1ubuntu1) ) #30 SMP Fri Aug 16 09:47:32 PDT 2013
[ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] Machine: Generic AM33XX (Flattened Device Tree), model: TI AM335x BeagleBone
[ 0.000000] bootconsole [earlycon0] enabled
[ 0.000000] Memory policy: ECC disabled, Data cache writeback
[ 0.000000] On node 0 totalpages: 130816
[ 0.000000] free_area_init_node: node 0, pgdat c081d400, node_mem_map c12fc000
[ 0.000000] Normal zone: 1024 pages used for memmap
[ 0.000000] Normal zone: 0 pages reserved
[ 0.000000] Unable to handle kernel NULL pointer dereference at virtual address 00000026
[ 0.000000] pgd = c0004000
[ 0.000000] [00000026] *pgd=00000000
[ 0.000000] Internal error: Oops: 5 [#1] SMP ARM
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.11.0-rc5-next-20130816 #30
[ 0.000000] task: c0793c70 ti: c0788000 task.ti: c0788000
[ 0.000000] PC is at __mod_zone_page_state+0x2c/0xb4
[ 0.000000] LR is at mod_zone_page_state+0x2c/0x4c
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Reported-by: Kevin Hilman <khilman@xxxxxxxxxx>
Tested-by: Kevin Hilman <khilman@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/page_alloc.c~mm-page_alloc-fair-zone-allocator-policy-v2-fix-2 mm/page_alloc.c
--- a/mm/page_alloc.c~mm-page_alloc-fair-zone-allocator-policy-v2-fix-2
+++ a/mm/page_alloc.c
@@ -4797,11 +4797,11 @@ static void __paginginit free_area_init_
spin_lock_init(&zone->lru_lock);
zone_seqlock_init(zone);
zone->zone_pgdat = pgdat;
+ zone_pcp_init(zone);
/* For bootup, initialized properly in watermark setup */
mod_zone_page_state(zone, NR_ALLOC_BATCH, zone->managed_pages);
- zone_pcp_init(zone);
lruvec_init(&zone->lruvec);
if (!size)
continue;
_
Patches currently in -mm which might be from hannes@xxxxxxxxxxx are
mm-kill-one-if-loop-in-__free_pages_bootmem.patch
mm-vmscan-fix-numa-reclaim-balance-problem-in-kswapd.patch
mm-page_alloc-rearrange-watermark-checking-in-get_page_from_freelist.patch
mm-page_alloc-fair-zone-allocator-policy.patch
mm-page_alloc-fair-zone-allocator-policy-v2.patch
mm-page_alloc-fair-zone-allocator-policy-v2-fix.patch
mm-page_alloc-fair-zone-allocator-policy-v2-fix-2.patch
mm-revert-page-writebackc-subtract-min_free_kbytes-from-dirtyable-memory.patch
mm-page_alloc-add-unlikely-macro-to-help-compiler-optimization.patch
mm-move-pgtable-related-functions-to-right-place.patch
swap-clean-up-ifdef-in-page_mapping.patch
mm-vmalloc-remove-useless-variable-in-vmap_block.patch
mm-vmalloc-use-well-defined-find_last_bit-func.patch
kmemcg-dont-allocate-extra-memory-for-root-memcg_cache_params-v2.patch
mm-fix-aio-performance-regression-for-database-caused-by-thp.patch
mm-putback_lru_page-remove-unnecessary-call-to-page_lru_base_type.patch
mm-munlock-remove-unnecessary-call-to-lru_add_drain.patch
mm-munlock-batch-non-thp-page-isolation-and-munlockputback-using-pagevec.patch
mm-munlock-batch-nr_mlock-zone-state-updates.patch
mm-munlock-bypass-per-cpu-pvec-for-putback_lru_page.patch
mm-munlock-remove-redundant-get_page-put_page-pair-on-the-fast-path.patch
mm-munlock-manual-pte-walk-in-fast-path-instead-of-follow_page_mask.patch
mm-vmscan-fix-do_try_to_free_pages-livelock.patch
mm-vmscan-fix-do_try_to_free_pages-livelock-fix.patch
mm-sparse-introduce-alloc_usemap_and_memmap.patch
mm-writeback-make-writeback_inodes_wb-static.patch
mm-vmalloc-use-wrapper-function-get_vm_area_size-to-caculate-size-of-vm-area.patch
swap-add-a-simple-detector-for-inappropriate-swapin-readahead-fix.patch
linux-next.patch
memcg-remove-redundant-code-in-mem_cgroup_force_empty_write.patch
memcg-vmscan-integrate-soft-reclaim-tighter-with-zone-shrinking-code.patch
memcg-get-rid-of-soft-limit-tree-infrastructure.patch
vmscan-memcg-do-softlimit-reclaim-also-for-targeted-reclaim.patch
memcg-enhance-memcg-iterator-to-support-predicates.patch
memcg-enhance-memcg-iterator-to-support-predicates-fix.patch
memcg-track-children-in-soft-limit-excess-to-improve-soft-limit.patch
memcg-vmscan-do-not-attempt-soft-limit-reclaim-if-it-would-not-scan-anything.patch
memcg-track-all-children-over-limit-in-the-root.patch
memcg-vmscan-do-not-fall-into-reclaim-all-pass-too-quickly.patch
arch-mm-remove-obsolete-init-oom-protection.patch
arch-mm-do-not-invoke-oom-killer-on-kernel-fault-oom.patch
arch-mm-pass-userspace-fault-flag-to-generic-fault-handler.patch
x86-finish-user-fault-error-path-with-fatal-signal.patch
mm-memcg-enable-memcg-oom-killer-only-for-user-faults.patch
mm-memcg-rework-and-document-oom-waiting-and-wakeup.patch
mm-memcg-do-not-trap-chargers-with-full-callstack-on-oom.patch
memcg-remove-memcg_nr_file_mapped.patch
memcg-check-for-proper-lock-held-in-mem_cgroup_update_page_stat.patch
memcg-add-per-cgroup-writeback-pages-accounting.patch
memcg-document-cgroup-dirty-writeback-memory-statistics.patch
debugging-keep-track-of-page-owners-fix-2-fix-fix-fix.patch
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