diff options
| author |   David S. Miller <davem@davemloft.net> | 2017-10-05 17:57:03 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-05 18:19:22 -0700 |
| commit | 53954cf8c5d205624167a2bfd117cc0c1a5f3c6d (patch) | |
| tree | a287f0c80eb616758bb5212523c8fb3d8fc350a4 /mm/compaction.c | |
| parent | Merge branch 'bpftool' (diff) | |
| parent | Merge tag 'pm-4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm (diff) | |
| download | linux-dev-53954cf8c5d205624167a2bfd117cc0c1a5f3c6d.tar.xz linux-dev-53954cf8c5d205624167a2bfd117cc0c1a5f3c6d.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Just simple overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'mm/compaction.c')
| -rw-r--r-- | mm/compaction.c | 13 |
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)) |