This is a follow-up to [1]: [PATCH v9 0/3] mm: process/cgroup ksm support
which is not in mm-unstable yet (but soon? :) ). I'll be on vacation for ~2 weeks, so sending it out now as reply to [1].
(1) Make PR_SET_MEMORY_MERGE=0 unmerge pages like setting MADV_UNMERGEABLE does, (2) add a selftest for it and (3) factor out disabling of KSM from s390/gmap code.
Cc: Andrew Morton akpm@linux-foundation.org Cc: Stefan Roesch shr@devkernel.io Cc: Rik van Riel riel@surriel.com Cc: Johannes Weiner hannes@cmpxchg.org Cc: Michal Hocko mhocko@suse.com Cc: Christian Borntraeger borntraeger@linux.ibm.com Cc: Janosch Frank frankja@linux.ibm.com Cc: Claudio Imbrenda imbrenda@linux.ibm.com Cc: Heiko Carstens hca@linux.ibm.com Cc: Vasily Gorbik gor@linux.ibm.com Cc: Sven Schnelle svens@linux.ibm.com Cc: Andrew Morton akpm@linux-foundation.org Cc: Shuah Khan shuah@kernel.org
[1] https://lkml.kernel.org/r/20230418051342.1919757-1-shr@devkernel.io
David Hildenbrand (3): mm/ksm: unmerge and clear VM_MERGEABLE when setting PR_SET_MEMORY_MERGE=0 selftests/ksm: ksm_functional_tests: add prctl unmerge test mm/ksm: move disabling KSM from s390/gmap code to KSM code
arch/s390/mm/gmap.c | 20 +------ include/linux/ksm.h | 7 +++ kernel/sys.c | 7 +-- mm/ksm.c | 58 +++++++++++++++++++ .../selftests/mm/ksm_functional_tests.c | 46 +++++++++++++-- 5 files changed, 107 insertions(+), 31 deletions(-)