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-rw-r--r--mm/compaction.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/mm/compaction.c b/mm/compaction.c
index 07947387244a..c589ead54fb3 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -1594,7 +1594,11 @@ typedef enum {
* Allow userspace to control policy on scanning the unevictable LRU for
* compactable pages.
*/
+#ifdef CONFIG_PREEMPT_RT
+int sysctl_compact_unevictable_allowed __read_mostly = 0;
+#else
int sysctl_compact_unevictable_allowed __read_mostly = 1;
+#endif
static inline void
update_fast_start_pfn(struct compact_control *cc, unsigned long pfn)