commit 3c6f33b7273a ("mm/ksm: support fork/exec for prctl") inherits
MMF_VM_MERGE_ANY flag when a task calls execve(). Howerver, it doesn't
create the mm_slot, so ksmd will not try to scan this task. The first
patch fixes the issue.
The second patch extend the selftests of ksm to verfity the deduplication
really happens after fork/exec inherits ths KSM setting.
Changelog since v1:
- Add ksm cleanup in __bprm_mm_init() when error occurs.
- Add some comment.
- Extend the selftests of ksm fork/exec.
Jinjiang Tu (2):
mm/ksm: fix ksm exec support for prctl
selftest/mm: ksm_functional_tests: extend test case for ksm fork/exec
fs/exec.c | 10 +++
include/linux/ksm.h | 13 +++
.../selftests/mm/ksm_functional_tests.c | 79 +++++++++++++++++--
3 files changed, 96 insertions(+), 6 deletions(-)
--
2.25.1
