diff options
Diffstat (limited to 'drivers/misc/sgi-gru/grutlbpurge.c')
| -rw-r--r-- | drivers/misc/sgi-gru/grutlbpurge.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/misc/sgi-gru/grutlbpurge.c b/drivers/misc/sgi-gru/grutlbpurge.c index bb6b0e64e101..bcfd5425e2e6 100644 --- a/drivers/misc/sgi-gru/grutlbpurge.c +++ b/drivers/misc/sgi-gru/grutlbpurge.c @@ -242,7 +242,9 @@ static void gru_invalidate_range_end(struct mmu_notifier *mn, struct gru_mm_struct *gms = container_of(mn, struct gru_mm_struct, ms_notifier); - atomic_dec(&gms->ms_range_active); + /* ..._and_test() provides needed barrier */ + (void)atomic_dec_and_test(&gms->ms_range_active); + wake_up_all(&gms->ms_wait_queue); gru_dbg(grudev, "gms %p, start 0x%lx, end 0x%lx\n", gms, start, end); } |