The patch titled
Subject: mm-page_alloc-free-order-0-pages-through-pcp-in-page_frag_free-fix
has been added to the -mm tree. Its filename is
mm-page_alloc-free-order-0-pages-through-pcp-in-page_frag_free-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-page_alloc-free-order-0-pages-through-pcp-in-page_frag_free-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-page_alloc-free-order-0-pages-through-pcp-in-page_frag_free-fix.patch
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------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm-page_alloc-free-order-0-pages-through-pcp-in-page_frag_free-fix
add comment
Cc: Aaron Lu <aaron.lu@xxxxxxxxx>
Cc: Alexander Duyck <alexander.h.duyck@xxxxxxxxxxxxxxx>
Cc: Ilias Apalodimas <ilias.apalodimas@xxxxxxxxxx>
Cc: Jesper Dangaard Brouer <brouer@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Pankaj gupta <pagupta@xxxxxxxxxx>
Cc: Pawel Staszewski <pstaszewski@xxxxxxxxx>
Cc: Tariq Toukan <tariqt@xxxxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/mm/page_alloc.c~mm-page_alloc-free-order-0-pages-through-pcp-in-page_frag_free-fix
+++ a/mm/page_alloc.c
@@ -4684,7 +4684,7 @@ void page_frag_free(void *addr)
if (unlikely(put_page_testzero(page))) {
unsigned int order = compound_order(page);
- if (order == 0)
+ if (order == 0) /* Via pcp? */
free_unref_page(page);
else
__free_pages_ok(page, order);
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
mm-cleancache-fix-corruption-on-missed-inode-invalidation-fix.patch
arm-arch-arm-include-asm-pageh-needs-personalityh.patch
mm.patch
mm-slab-remove-unnecessary-unlikely-fix.patch
mm-slub-record-final-state-of-slub-action-in-deactivate_slab-fix.patch
mm-slub-improve-performance-by-skipping-checked-node-in-get_any_partial-fix.patch
mm-page_owner-clamp-read-count-to-page_size-fix.patch
mm-hotplug-optimize-clear_hwpoisoned_pages-fix.patch
mm-ksm-do-not-block-on-page-lock-when-searching-stable-tree-fix.patch
mm-memory_hotplug-print-reason-for-the-offlining-failure-fix.patch
mm-memory_hotplug-be-more-verbose-for-memory-offline-failures-fix.patch
mm-convert-totalram_pages-and-totalhigh_pages-variables-to-atomic-checkpatch-fixes.patch
mm-page_alloc-free-order-0-pages-through-pcp-in-page_frag_free-fix.patch
memory_hotplug-free-pages-as-higher-order-fix.patch
memory_hotplug-free-pages-as-higher-order-fix-fix.patch
fs-epoll-deal-with-wait_queue-only-once-fix.patch
exec-separate-mm_anonpages-and-rlimit_stack-accounting-checkpatch-fixes.patch
ipc-allow-boot-time-extension-of-ipcmni-from-32k-to-8m-checkpatch-fixes.patch
scripts-atomic-check-atomicssh-dont-assume-that-scripts-are-executable.patch
kernel-forkc-export-kernel_thread-to-modules.patch
slab-leaks3-default-y.patch
