Merge 4.14-rc4 into staging-next

We want the staging/iio fixes in here as well to handle merge issues.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 5 insertions, 8 deletions

diff --git a/mm/compaction.c b/mm/compaction.c
index fb548e4c7bd4..03d31a875341 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -1999,17 +1999,14 @@ void wakeup_kcompactd(pg_data_t *pgdat, int order, int classzone_idx)
         if (pgdat->kcompactd_max_order < order)
                 pgdat->kcompactd_max_order = order;
 
-        /*
-         * Pairs with implicit barrier in wait_event_freezable()
-         * such that wakeups are not missed in the lockless
-         * waitqueue_active() call.
-         */
-        smp_acquire__after_ctrl_dep();
-
         if (pgdat->kcompactd_classzone_idx > classzone_idx)
                 pgdat->kcompactd_classzone_idx = classzone_idx;
 
-        if (!waitqueue_active(&pgdat->kcompactd_wait))
+        /*
+         * Pairs with implicit barrier in wait_event_freezable()
+         * such that wakeups are not missed.
+         */
+        if (!wq_has_sleeper(&pgdat->kcompactd_wait))
                 return;
 
         if (!kcompactd_node_suitable(pgdat))