[PATCH 0/3] Optimize mremap() by PTE-batching

[Dev Jain <dev.jain@arm.com>]

Use PTE batching to optimize mremap().

Mapping 512K of memory, memsetting it, remapping it to src + 512K, and
munmapping it 10,000 times, the average execution time reduces from 1.9 to
1.2 seconds, giving a 37% performance optimization. (Apple M3)

Dev Jain (3):
  mm: Call pointers to ptes as ptep
  mm: Add generic helper to hint a large folio
  mm: Optimize mremap() by PTE batching

 include/linux/pgtable.h | 16 +++++++++++++++
 mm/mremap.c             | 44 +++++++++++++++++++++++++++--------------
 2 files changed, 45 insertions(+), 15 deletions(-)

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2.30.2