The patch titled
Subject: mm-page_alloc-only-check-pagecompound-for-high-order-pages-fix
has been added to the -mm tree. Its filename is
mm-page_alloc-only-check-pagecompound-for-high-order-pages-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-page_alloc-only-check-pagecompound-for-high-order-pages-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-page_alloc-only-check-pagecompound-for-high-order-pages-fix.patch
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------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm-page_alloc-only-check-pagecompound-for-high-order-pages-fix
use unlikely(order) in free_pages_prepare(), per Vlastimil
Cc: Jesper Dangaard Brouer <brouer@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
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-only-check-pagecompound-for-high-order-pages-fix mm/page_alloc.c
--- a/mm/page_alloc.c~mm-page_alloc-only-check-pagecompound-for-high-order-pages-fix
+++ a/mm/page_alloc.c
@@ -1036,7 +1036,7 @@ static bool free_pages_prepare(struct pa
* Check tail pages before head page information is cleared to
* avoid checking PageCompound for order-0 pages.
*/
- if (order) {
+ if (unlikely(order)) {
bool compound = PageCompound(page);
int i;
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
i-need-old-gcc.patch
arch-alpha-kernel-systblss-remove-debug-check.patch
arm-arch-arm-include-asm-pageh-needs-personalityh.patch
kernel-padata-hide-unused-functions-checkpatch-fixes.patch
mm.patch
mm-rename-_count-field-of-the-struct-page-to-_refcount-fix.patch
mm-rename-_count-field-of-the-struct-page-to-_refcount-fix-fix.patch
include-linux-apply-__malloc-attribute-checkpatch-fixes.patch
include-linux-nodemaskh-create-next_node_in-helper.patch
include-linux-nodemaskh-create-next_node_in-helper-fix-fix.patch
mm-hugetlbc-use-first_memory_node.patch
mm-mempolicyc-offset_il_node-document-and-clarify.patch
mm-uninline-page_mapped.patch
mm-uninline-page_mapped-checkpatch-fixes.patch
memory_hotplug-introduce-config_memory_hotplug_default_online-fix.patch
oom-oom_reaper-try-to-reap-tasks-which-skip-regular-oom-killer-path-try-to-reap-tasks-which-skip-regular-memcg-oom-killer-path-fix.patch
mm-page_alloc-only-check-pagecompound-for-high-order-pages-fix.patch
mm-compaction-abstract-compaction-feedback-to-helpers-fix.patch
mm-oom-compaction-prevent-from-should_compact_retry-looping-for-ever-for-costly-orders-fix.patch
mm-kasan-initial-memory-quarantine-implementation-v8-fix.patch
exit_thread-remove-empty-bodies-fix.patch
exit_thread-accept-a-task-parameter-to-be-exited-checkpatch-fixes.patch
fs-execc-fix-minor-memory-leak.patch
linux-next-rejects.patch
drivers-net-wireless-intel-iwlwifi-dvm-calibc-fix-min-warning.patch
kernel-forkc-export-kernel_thread-to-modules.patch
slab-leaks3-default-y.patch
linux-next-git-rejects.patch
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