From: Wandun Chen <[email protected]>
vm.compact_unevictable_allowed=0 is meant to keep compaction from
touching unevictable folios. In practice there are still two paths
where it does not take effect. This series fixes them and adds a
tracepoint to make such issues easier to diagnose in the future.
Wandun Chen (3):
mm/compaction: skip isolate mlocked folios when
compact_unevictable_allowed=0
mm/compaction: add per-folio isolation tracepoint
mm/compaction: respect compact_unevictable_allowed in alloc_contig
path
include/linux/compaction.h | 6 ++++++
include/trace/events/compaction.h | 26 ++++++++++++++++++++++++++
mm/compaction.c | 14 +++++++++++---
mm/internal.h | 1 +
mm/page_alloc.c | 2 ++
5 files changed, 46 insertions(+), 3 deletions(-)
--
2.43.0
