As we discussed in the previous thread [1], the MADV_COLLAPSE will ignore the system-wide anon/shmem THP sysfs settings, which means that even though we have disabled the anon/shmem THP configuration, MADV_COLLAPSE will still attempt to collapse into a anon/shmem THP. This violates the rule we have agreed upon: never means never. This patch set will address this issue. [1] https://lore.kernel.org/all/1f00fdc3-a3a3-464b-8565-4c1b23d34f8d@xxxxxxxxxxxxxxxxx/ Baolin Wang (2): mm: huge_memory: disallow hugepages if the system-wide THP sysfs settings are disabled mm: shmem: disallow hugepages if the system-wide shmem THP sysfs settings are disabled include/linux/huge_mm.h | 23 +++++++++++++++++++---- mm/huge_memory.c | 2 +- mm/shmem.c | 12 ++++++------ 3 files changed, 26 insertions(+), 11 deletions(-) -- 2.43.5
