> The following short patch series completes the support for allowing clients to > sleep in mmu notifiers (specifically in invalidate_page and > invalidate_range_start/end), adding on the work done by Andrea Arcangeli and > Sagi Grimberg in http://marc.info/?l=linux-mm&m=133113297028676&w=3 > > This patchset is a preliminary step towards on-demand paging design to be > added to the Infiniband stack. Our goal is to avoid pinning pages in > memory regions registered for IB communication, so we need to get > notifications for invalidations on such memory regions, and stop the hardware > from continuing its access to the invalidated pages. The hardware operation > that flushes the page tables can block, so we need to sleep until the hardware > is guaranteed not to access these pages anymore. The first patch moves the mentioned notifier functions out of the PTL, and the second patch changes the change_pte notification to stop calling invalidate_page as a default. Regards, Haggai Eran Changes from V0: - Fixed a bug in patch 1 that prevented compilation without MMU notifiers. - Dropped the patches 2 and 3 that were moving tlb_gather_mmu calls. - Added a patch to handle invalidate_page being called from change_pte. Haggai Eran (1): mm: Wrap calls to set_pte_at_notify with invalidate_range_start and invalidate_range_end Sagi Grimberg (1): mm: Move all mmu notifier invocations to be done outside the PT lock include/linux/mmu_notifier.h | 47 -------------------------------------------- kernel/events/uprobes.c | 2 ++ mm/filemap_xip.c | 4 +++- mm/huge_memory.c | 32 ++++++++++++++++++++++++------ mm/hugetlb.c | 15 ++++++++------ mm/ksm.c | 13 ++++++++++-- mm/memory.c | 9 ++++++++- mm/mmu_notifier.c | 6 ------ mm/rmap.c | 27 ++++++++++++++++++------- 9 files changed, 79 insertions(+), 76 deletions(-) -- 1.7.11.2 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>