The patch titled
Subject: mm-compaction-acquire-the-zone-lru_lock-as-late-as-possible-fix
has been added to the -mm tree. Its filename is
mm-compaction-acquire-the-zone-lru_lock-as-late-as-possible-fix.patch
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------------------------------------------------------
From: Minchan Kim <minchan@xxxxxxxxxx>
Subject: mm-compaction-acquire-the-zone-lru_lock-as-late-as-possible-fix
augment comment
Cc: Mel Gorman <mgorman@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/compaction.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN mm/compaction.c~mm-compaction-acquire-the-zone-lru_lock-as-late-as-possible-fix mm/compaction.c
--- a/mm/compaction.c~mm-compaction-acquire-the-zone-lru_lock-as-late-as-possible-fix
+++ a/mm/compaction.c
@@ -415,7 +415,8 @@ isolate_migratepages_range(struct zone *
* if PageLRU is set) but the lock is not necessarily taken
* here and it is wasteful to take it just to check transhuge.
* Check transhuge without lock and skip if it's either a
- * transhuge or hugetlbfs page.
+ * transhuge or hugetlbfs page because calling compound_order()
+ * requires lru_lock to exclude isolation and splitting.
*/
if (PageTransHuge(page)) {
if (!locked)
_
Patches currently in -mm which might be from minchan@xxxxxxxxxx are
linux-next.patch
mm-remove-__gfp_no_kswapd.patch
mm-fix-nonuniform-page-status-when-writing-new-file-with-small-buffer.patch
mm-fix-nonuniform-page-status-when-writing-new-file-with-small-buffer-fix.patch
mm-fix-nonuniform-page-status-when-writing-new-file-with-small-buffer-fix-fix.patch
mm-compaction-update-comment-in-try_to_compact_pages.patch
mm-vmscan-scale-number-of-pages-reclaimed-by-reclaim-compaction-based-on-failures.patch
mm-vmscan-scale-number-of-pages-reclaimed-by-reclaim-compaction-based-on-failures-fix.patch
mm-compaction-capture-a-suitable-high-order-page-immediately-when-it-is-made-available.patch
mm-cma-discard-clean-pages-during-contiguous-allocation-instead-of-migration.patch
mm-cma-discard-clean-pages-during-contiguous-allocation-instead-of-migration-fix.patch
mm-cma-discard-clean-pages-during-contiguous-allocation-instead-of-migration-fix-fix.patch
mm-fix-tracing-in-free_pcppages_bulk.patch
mm-fix-tracing-in-free_pcppages_bulk-fix.patch
cma-fix-counting-of-isolated-pages.patch
cma-count-free-cma-pages.patch
cma-count-free-cma-pages-fix.patch
cma-fix-watermark-checking.patch
cma-fix-watermark-checking-fix.patch
mm-page_alloc-use-get_freepage_migratetype-instead-of-page_private.patch
mm-remain-migratetype-in-freed-page.patch
memory-hotplug-bug-fix-race-between-isolation-and-allocation.patch
memory-hotplug-fix-pages-missed-by-race-rather-than-failing.patch
memory-hotplug-fix-pages-missed-by-race-rather-than-failng-fix.patch
swap-add-a-simple-detector-for-inappropriate-swapin-readahead.patch
swap-add-a-simple-detector-for-inappropriate-swapin-readahead-fix.patch
mm-memblock-reduce-overhead-in-binary-search.patch
mm-memblock-use-existing-interface-to-set-nid.patch
mm-memblock-cleanup-early_node_map-related-comments.patch
mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long.patch
mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long-fix.patch
mm-compaction-abort-compaction-loop-if-lock-is-contended-or-run-too-long-fix-2.patch
mm-compaction-move-fatal-signal-check-out-of-compact_checklock_irqsave.patch
mm-compaction-acquire-the-zone-lru_lock-as-late-as-possible-fix.patch
mm-compaction-acquire-the-zone-lock-as-late-as-possible.patch
revert-mm-have-order-0-compaction-start-off-where-it-left.patch
mm-page_alloc-refactor-out-__alloc_contig_migrate_alloc.patch
mm-page_alloc-refactor-out-__alloc_contig_migrate_alloc-checkpatch-fixes.patch
memory-hotplug-dont-replace-lowmem-pages-with-highmem.patch
mm-enable-config_compaction-by-default.patch
mm-numa-reclaim-from-all-nodes-within-reclaim-distance.patch
mm-numa-reclaim-from-all-nodes-within-reclaim-distance-fix.patch
mm-revert-0def08e3-mm-mempolicyc-check-return-code-of-check_range.patch
mm-revert-0def08e3-mm-mempolicyc-check-return-code-of-check_range-fix.patch
memory-hotplug-fix-zone-stat-mismatch.patch
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