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| author |   Dan Williams <dan.j.williams@intel.com> | 2017-11-15 16:56:11 -0800 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2017-11-15 16:56:11 -0800 |
| commit | 4247f24c23589bcc3bc3490515ef8c9497e9ae55 (patch) | |
| tree | 89726a0e171c443a3e8def2992b56dbd8a21df21 /mm/compaction.c | |
| parent | acpi, nfit: add 'Enable Latch System Shutdown Status' command support (diff) | |
| parent | dax: fix general protection fault in dax_alloc_inode (diff) | |
| download | wireguard-linux-4247f24c23589bcc3bc3490515ef8c9497e9ae55.tar.xz wireguard-linux-4247f24c23589bcc3bc3490515ef8c9497e9ae55.zip | |
Merge branch 'for-4.15/dax' into libnvdimm-for-next
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)) |