diff mbox series

[RFC,v2,01/19] mm: add new flag to enable ksm per process

Message ID 20230210215023.2740545-2-shr@devkernel.io
State New
Headers show
Series mm: process/cgroup ksm support | expand

Commit Message

Stefan Roesch Feb. 10, 2023, 9:50 p.m. UTC 
This introduces the new flag MMF_VM_MERGE_ANY flag. When this flag is
set, kernel samepage merging (ksm) gets enabled for all vma's of a
process.

Signed-off-by: Stefan Roesch <shr@devkernel.io>
---
 include/linux/sched/coredump.h | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/include/linux/sched/coredump.h b/include/linux/sched/coredump.h
index 0e17ae7fbfd3..0ee96ea7a0e9 100644
--- a/include/linux/sched/coredump.h
+++ b/include/linux/sched/coredump.h
@@ -90,4 +90,5 @@  static inline int get_dumpable(struct mm_struct *mm)
 #define MMF_INIT_MASK		(MMF_DUMPABLE_MASK | MMF_DUMP_FILTER_MASK |\
 				 MMF_DISABLE_THP_MASK | MMF_HAS_MDWE_MASK)
 
+#define MMF_VM_MERGE_ANY	29
 #endif /* _LINUX_SCHED_COREDUMP_H */