Messages in this thread | | | From | Wei Yang <> | Subject | [PATCH 0/2] mm/mmap.c: reduce subtree gap propagation a little | Date | Mon, 26 Aug 2019 15:31:04 +0800 |
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When insert and delete a vma, it will compute and propagate related subtree gap. After some investigation, we can reduce subtree gap propagation a little.
[1]: This one reduce the propagation by update *next* gap after itself, since *next* must be a parent in this case. [2]: This one achieve this by unlinking vma from list.
After applying these two patches, test shows it reduce 0.4% function all for vma_compute_subtree_gap.
Wei Yang (2): mm/mmap.c: update *next* gap after itself mm/mmap.c: unlink vma before rb_erase
mm/mmap.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-)
-- 2.17.1
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