This set is the newer version of 5/6 and 6/6 of [1]. v9 of 1-4 of the work [2] was recently picked by Andrew. Patch 1 enables khugepaged to handle pte-mapped THP. These THPs are left in such state when khugepaged failed to get exclusive lock of mmap_sem. Patch 2 leverages work in 1 for uprobe on THP. After [2], uprobe only splits the PMD. When the uprobe is disabled, we get pte-mapped THP. After this set, these pte-mapped THP will be collapsed as pmd-mapped. [1] https://lkml.org/lkml/2019/6/23/23 [2] https://www.spinics.net/lists/linux-mm/msg185889.html Song Liu (2): khugepaged: enable collapse pmd for pte-mapped THP uprobe: collapse THP pmd after removing all uprobes include/linux/khugepaged.h | 15 ++++ kernel/events/uprobes.c | 9 +++ mm/khugepaged.c | 136 +++++++++++++++++++++++++++++++++++++ 3 files changed, 160 insertions(+) -- 2.17.1
