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-rw-r--r--fs/fs-writeback.c13
1 files changed, 6 insertions, 7 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 7eba7326b9b..8e1e5e19d21 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -97,6 +97,11 @@ static void bdi_work_clear(struct bdi_work *work)
{
clear_bit(WS_USED_B, &work->state);
smp_mb__after_clear_bit();
+ /*
+ * work can have disappeared at this point. bit waitq functions
+ * should be able to tolerate this, provided bdi_sched_wait does
+ * not dereference it's pointer argument.
+ */
wake_up_bit(&work->state, WS_USED_B);
}
@@ -169,13 +174,7 @@ static void bdi_queue_work(struct backing_dev_info *bdi, struct bdi_work *work)
else {
struct bdi_writeback *wb = &bdi->wb;
- /*
- * End work now if this wb has no dirty IO pending. Otherwise
- * wakeup the handling thread
- */
- if (!wb_has_dirty_io(wb))
- wb_clear_pending(wb, work);
- else if (wb->task)
+ if (wb->task)
wake_up_process(wb->task);
}
}