mm/lib: increase sleep time in ksm scanning

for some systems under pressure, we've observed that sleeping 5 seconds
is not sufficient for completing ksm scanning, to fix this, we should
give ksmd more time to scan the mergable pages by increasing sleeping
time to 10s.

Signed-off-by: Caspar Zhang <caspar@casparzhang.com>
Reviewed-by: Zhouping Liu <zliu@redhat.com>
Reviewed-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
1 file changed