Here is the 5th version of hugepage migration patchset.
Changes in this version are as follows:
- removed putback_active_hugepages() as a cleanup (1/9)
- added code to check movability of a given hugepage (8/9)
- set GFP MOVABLE flag depending on the movability of hugepage (9/9).
I feel that 8/9 and 9/9 contain some new things, so need reviews on them.
TODOs: (likely to be done after this work)
- split page table lock for pmd/pud based hugepage (maybe applicable to thp)
- improve alloc_migrate_target (especially in node choice)
- using page walker in check_range
Thanks,
Naoya Horiguchi
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GitHub:
git://github.com/Naoya-Horiguchi/linux.git extend_hugepage_migration.v5
Test code:
git://github.com/Naoya-Horiguchi/test_hugepage_migration_extension.git
Naoya Horiguchi (9):
migrate: make core migration code aware of hugepage
soft-offline: use migrate_pages() instead of migrate_huge_page()
migrate: add hugepage migration code to migrate_pages()
migrate: add hugepage migration code to move_pages()
mbind: add hugepage migration code to mbind()
migrate: remove VM_HUGETLB from vma flag check in vma_migratable()
memory-hotplug: enable memory hotplug to handle hugepage
migrate: check movability of hugepage in unmap_and_move_huge_page()
prepare to remove /proc/sys/vm/hugepages_treat_as_movable
Documentation/sysctl/vm.txt | 13 +---
arch/arm/mm/hugetlbpage.c | 5 ++
arch/arm64/mm/hugetlbpage.c | 5 ++
arch/ia64/mm/hugetlbpage.c | 5 ++
arch/metag/mm/hugetlbpage.c | 5 ++
arch/mips/mm/hugetlbpage.c | 5 ++
arch/powerpc/mm/hugetlbpage.c | 10 ++++
arch/s390/mm/hugetlbpage.c | 5 ++
arch/sh/mm/hugetlbpage.c | 5 ++
arch/sparc/mm/hugetlbpage.c | 5 ++
arch/tile/mm/hugetlbpage.c | 5 ++
arch/x86/mm/hugetlbpage.c | 8 +++
include/linux/hugetlb.h | 25 ++++++++
include/linux/mempolicy.h | 2 +-
include/linux/migrate.h | 5 --
mm/hugetlb.c | 134 +++++++++++++++++++++++++++++++++++++-----
mm/memory-failure.c | 15 ++++-
mm/memory.c | 17 +++++-
mm/memory_hotplug.c | 42 ++++++++++---
mm/mempolicy.c | 46 +++++++++++++--
mm/migrate.c | 61 ++++++++++---------
mm/page_alloc.c | 12 ++++
mm/page_isolation.c | 14 +++++
23 files changed, 371 insertions(+), 78 deletions(-)
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