Version v4 of these patches was sent by Colin Cross a long time ago [1] and [2]. At the time, these patches were not merged, and it looks like they just fell off the radar since. In our efforts to run Android on mainline kernels, we realised that since past some time, this patchset is needed for Android to boot, hence I am re-posting it to try and get these discussed and hopefully merged. I have rebased these for v5.9-rc3 and fixed minor updates as required. --- v6: Rebased to v5.9-rc3 and addressed review comments: - added missing callers in fs/userfaultd.c - simplified the union - use the new access_remote_vm_locked() in show_map_vma() since that already holds mmap_lock v7: fixed randconfig build failure when CONFIG_ADVISE_SYSCALLS isn't defined Colin Cross (2): mm: rearrange madvise code to allow for reuse mm: add a field to store names for private anonymous memory Sumit Semwal (1): mm: memory: Add access_remote_vm_locked variant Documentation/filesystems/proc.rst | 2 + fs/proc/task_mmu.c | 24 +- fs/userfaultfd.c | 7 +- include/linux/mm.h | 14 +- include/linux/mm_types.h | 25 +- include/uapi/linux/prctl.h | 3 + kernel/sys.c | 32 +++ mm/interval_tree.c | 2 +- mm/madvise.c | 356 +++++++++++++++++------------ mm/memory.c | 49 +++- mm/mempolicy.c | 3 +- mm/mlock.c | 2 +- mm/mmap.c | 38 +-- mm/mprotect.c | 2 +- 14 files changed, 381 insertions(+), 178 deletions(-) -- 2.28.0