Checkpointing a process requires knowledge about the process memory layout
which is obtained from /proc/<pid>/smaps, /proc/<pid>/pagemap etc.
Make sure these interfaces are available only when
CONFIG_CHECKPOINT_RESTORE=y

Signed-off-by: Mike Rapoport <[email protected]>
---
 init/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/init/Kconfig b/init/Kconfig
index e37f4b2a6445..63c1fd5bc360 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1328,6 +1328,7 @@ config MEMBARRIER
 config CHECKPOINT_RESTORE
        bool "Checkpoint/restore support" if EXPERT
        select PROC_CHILDREN
+       select PROC_PAGE_MONITOR
        default n
        help
          Enables additional kernel features in a sake of checkpoint/restore.
-- 
2.7.4

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