Hi everyone, This series contains a few patches to clean up some obsolete comment, remove unneeded return value and so on. Also we fix the possible NULL pointer dereference. More details can be found in the respective changelogs. Thanks! Miaohe Lin (12): mm: compaction: remove unneeded return value of kcompactd_run mm: compaction: remove unneeded pfn update mm: compaction: remove unneeded assignment to isolate_start_pfn mm: compaction: clean up comment for sched contention mm: compaction: clean up comment about suitable migration target recheck mm: compaction: use COMPACT_CLUSTER_MAX in compaction.c mm: compaction: use helper compound_nr in isolate_migratepages_block mm: compaction: clean up comment about async compaction in isolate_migratepages mm: compaction: avoid possible NULL pointer dereference in kcompactd_cpu_online mm: compaction: make compaction_zonelist_suitable return false when COMPACT_SUCCESS mm: compaction: simplify the code in __compact_finished mm: compaction: make sure highest is above the min_pfn include/linux/compaction.h | 5 +-- mm/compaction.c | 87 ++++++++++++++------------------------ mm/internal.h | 2 +- 3 files changed, 34 insertions(+), 60 deletions(-) -- 2.23.0