[PATCH v3 0/6] Fixes and cleanups to compaction

[Kemeng Shi]

Hi all, this is another series to do fix and clean up to compaction.
Patch 1-2 fix and clean up freepage list operation.
Patch 3-4 fix and clean up isolation of freepages
Patch 7 factor code to check if compaction is needed for allocation
order.
More details can be found in respective patches. Thanks!

v2->v3:
-Collect RVB and ACK from Baolin and Mel
-Avoid blockpfn outside pageblock in original likely(order <= MAX_ORDER)
block in patch 3
-Move comment into __reset_isolation_suitable in patch 4
-Improve indentation in patch 6

v1->v2:
-Collect RVB from Baolin.
-Keep pfn inside of pageblock in patch 3.
-Only improve comment of is_via_compact_memory in patch 6.
-Squash patch 8 and patch 9 into patch 7 and use ALLOC_WMARK_MIN
instead of magic number 0.

Kemeng Shi (6):
  mm/compaction: use correct list in move_freelist_{head}/{tail}
  mm/compaction: call list_is_{first}/{last} more intuitively in
    move_freelist_{head}/{tail}
  mm/compaction: correctly return failure with bogus compound_order in
    strict mode
  mm/compaction: remove repeat compact_blockskip_flush check in
    reset_isolation_suitable
  mm/compaction: improve comment of is_via_compact_memory
  mm/compaction: factor out code to test if we should run compaction for
    target order

 mm/compaction.c | 91 ++++++++++++++++++++++++++++---------------------
 1 file changed, 52 insertions(+), 39 deletions(-)

-- 
2.30.0