[v2,0/5] Cleanup and fixup for huge_memory

Message

Miaohe Lin April 29, 2021, 1:26 p.m. UTC

Hi all,
This series contains cleanups to remove dedicated macro and remove
unnecessary tlb_remove_page_size() for huge zero pmd. Also this adds
missing read-only THP checking for transparent_hugepage_enabled() and
avoids discarding hugepage if other processes are mapping it. More
details can be found in the respective changelogs. Thanks!

v1->v2:
  collect Reviewed-by tag
  add missing check for read-only THP per Yang Shi

Miaohe Lin (5):
  mm/huge_memory.c: remove dedicated macro HPAGE_CACHE_INDEX_MASK
  mm/huge_memory.c: use page->deferred_list
  mm/huge_memory.c: add missing read-only THP checking in
    transparent_hugepage_enabled()
  mm/huge_memory.c: remove unnecessary tlb_remove_page_size() for huge
    zero pmd
  mm/huge_memory.c: don't discard hugepage if other processes are
    mapping it

 include/linux/huge_mm.h | 27 +++++++++++++++++++--------
 mm/huge_memory.c        | 15 +++++++++------
 mm/khugepaged.c         |  4 +---
 mm/shmem.c              |  3 +--
 4 files changed, 30 insertions(+), 19 deletions(-)