diff options
| author | Ingo Molnar <mingo@kernel.org> | 2017-10-23 13:30:47 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-10-23 13:30:47 +0200 |
| commit | f95b23a112f1a31ea042483540cd907b58d23a5f (patch) | |
| tree | 3d41d2f8cf1d66ed593deb12f25a30d2905eb077 /mm/compaction.c | |
| parent | da20ab35180780e4a6eadc804544f1fa967f3567 (diff) | |
| parent | 58c3862b521ead4f69a24ef009a679cb3c519620 (diff) | |
Merge branch 'x86/urgent' into x86/asm, to pick up dependent fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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)) |