ksm: change ksm nice level to be 5

ksm should try not to disturb other tasks as much as possible.

Signed-off-by: Izik Eidus <[email protected]>
Cc: Chris Wright <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Andrea Arcangeli <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Wu Fengguang <[email protected]>
Cc: Balbir Singh <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: KAMEZAWA Hiroyuki <[email protected]>
Cc: Lee Schermerhorn <[email protected]>
Cc: Avi Kivity <[email protected]>
Cc: Nick Piggin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/mm/ksm.c b/mm/ksm.c
index 0113f15ff43b04ffa06cff9b547534d3392c0ea0..cf072c54df3297dbe956921a92d27a82543cbd86 100644 (file)
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -1263,7 +1263,7 @@ static void ksm_do_scan(unsigned int scan_npages)
 
 static int ksm_scan_thread(void *nothing)
 {
-       set_user_nice(current, 0);
+       set_user_nice(current, 5);
 
        while (!kthread_should_stop()) {
                if (ksm_run & KSM_RUN_MERGE) {