Add MMF_COW_PTE{, _READY} flags to prepare the subsequent
implementation of Copy-On-Write for the page table.
Signed-off-by: Chih-En Lin <shiyn.lin@xxxxxxxxx>
---
include/linux/sched/coredump.h | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/include/linux/sched/coredump.h b/include/linux/sched/coredump.h
index 4d0a5be28b70f..f03ff69c90c8c 100644
--- a/include/linux/sched/coredump.h
+++ b/include/linux/sched/coredump.h
@@ -84,7 +84,13 @@ static inline int get_dumpable(struct mm_struct *mm)
#define MMF_HAS_PINNED 28 /* FOLL_PIN has run, never cleared */
#define MMF_DISABLE_THP_MASK (1 << MMF_DISABLE_THP)
+#define MMF_COW_PTE_READY 29
+#define MMF_COW_PTE_READY_MASK (1 << MMF_COW_PTE_READY)
+
+#define MMF_COW_PTE 30
+#define MMF_COW_PTE_MASK (1 << MMF_COW_PTE)
+
#define MMF_INIT_MASK (MMF_DUMPABLE_MASK | MMF_DUMP_FILTER_MASK |\
- MMF_DISABLE_THP_MASK)
+ MMF_DISABLE_THP_MASK | MMF_COW_PTE_MASK)
#endif /* _LINUX_SCHED_COREDUMP_H */
--
2.37.3
