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| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2020-06-04 01:00:23 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-04 05:09:46 +0200 |
| commit | 5503fbf2b0b80c1a47a7dca0e4f060f52f522cfd (patch) | |
| tree | 5a7404db21e726c106a2ed5d2a9afa412dfd183d /mm/huge_memory.c | |
| parent | khugepaged: allow to collapse a page shared across fork (diff) | |
| download | linux-5503fbf2b0b80c1a47a7dca0e4f060f52f522cfd.tar.xz linux-5503fbf2b0b80c1a47a7dca0e4f060f52f522cfd.zip | |
khugepaged: allow to collapse PTE-mapped compound pages
We can collapse PTE-mapped compound pages. We only need to avoid handling
them more than once: lock/unlock page only once if it's present in the PMD
range multiple times as it handled on compound level. The same goes for
LRU isolation and putback.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Acked-by: Yang Shi <yang.shi@linux.alibaba.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Link: http://lkml.kernel.org/r/20200416160026.16538-7-kirill.shutemov@linux.intel.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/huge_memory.c')
0 files changed, 0 insertions, 0 deletions