| Message ID | 20230422205420.30372-1-david@redhat.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | mm/ksm: improve PR_SET_MEMORY_MERGE=0 handling and cleanup disabling KSM | expand |
On Sat, 22 Apr 2023 22:54:17 +0200 David Hildenbrand <david@redhat.com> wrote: > This is a follow-up to [1]: > [PATCH v9 0/3] mm: process/cgroup ksm support > > which is now in mm-stable. Ideally we'd get at least patch #1 into the > same kernel release as [1], so the semantics of setting > PR_SET_MEMORY_MERGE=0 are unchanged between kernel versions. Ack. I'll prepare a second followon MM batch for Linus latish in the merge window for material such as this.
This is a follow-up to [1]: [PATCH v9 0/3] mm: process/cgroup ksm support which is now in mm-stable. Ideally we'd get at least patch #1 into the same kernel release as [1], so the semantics of setting PR_SET_MEMORY_MERGE=0 are unchanged between kernel versions. (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. v1 -> v2: - "mm/ksm: unmerge and clear VM_MERGEABLE when setting PR_SET_MEMORY_MERGE=0" -> Cleanup one if/else -> Add doc for ksm_disable_merge_any() - Added ACKs [1] https://lkml.kernel.org/r/20230418051342.1919757-1-shr@devkernel.io 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: Shuah Khan <shuah@kernel.org> 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 | 12 +--- mm/ksm.c | 70 +++++++++++++++++++ .../selftests/mm/ksm_functional_tests.c | 46 ++++++++++-- 5 files changed, 121 insertions(+), 34 deletions(-)