The patch titled
Subject: mm/mempolicy: check hstate for hugetlbfs page in vma_migratable()
has been added to the -mm tree. Its filename is
mm-mempolicy-checking-hstate-for-hugetlbfs-page-in-vma_migratable.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-mempolicy-checking-hstate-for-hugetlbfs-page-in-vma_migratable.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-mempolicy-checking-hstate-for-hugetlbfs-page-in-vma_migratable.patch
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------------------------------------------------------
From: Li Xinhai <lixinhai.lxh@xxxxxxxxx>
Subject: mm/mempolicy: check hstate for hugetlbfs page in vma_migratable()
Check hstate at early phase when isolating page, instead of during unmap
and move phase, to avoid useless isolation.
Link: http://lkml.kernel.org/r/1578993378-10860-1-git-send-email-lixinhai.lxh@xxxxxxxxx
Signed-off-by: Li Xinhai <lixinhai.lxh@xxxxxxxxx>
Reviewed-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Cc: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Cc: Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mempolicy.h | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
--- a/include/linux/mempolicy.h~mm-mempolicy-checking-hstate-for-hugetlbfs-page-in-vma_migratable
+++ a/include/linux/mempolicy.h
@@ -185,10 +185,9 @@ static inline bool vma_migratable(struct
if (vma_is_dax(vma))
return false;
-#ifndef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION
- if (vma->vm_flags & VM_HUGETLB)
+ if (is_vm_hugetlb_page(vma) &&
+ !hugepage_migration_supported(hstate_vma(vma)))
return false;
-#endif
/*
* Migration allocates pages in the highest zone. If we cannot
_
Patches currently in -mm which might be from lixinhai.lxh@xxxxxxxxx are
mm-page_vma_mappedc-explicitly-compare-pfn-for-normal-hugetlbfs-and-thp-page.patch
mm-mempolicy-checking-hstate-for-hugetlbfs-page-in-vma_migratable.patch
mm-mempolicy-skip-walking-hugetlb-vma-if-mpol_mf_strict-is-specified-alone.patch
