NFSv4: Don't do idmapper upcalls for asynchronous RPC calls

[safe/jmp/linux-2.6] / mm / backing-dev.c

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index be68c95..c86edd2 100644 (file)
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -283,13 +283,12 @@ static wait_queue_head_t congestion_wqh[2] = {
                __WAIT_QUEUE_HEAD_INITIALIZER(congestion_wqh[1])
        };
 
-
-void clear_bdi_congested(struct backing_dev_info *bdi, int rw)
+void clear_bdi_congested(struct backing_dev_info *bdi, int sync)
 {
        enum bdi_state bit;
-       wait_queue_head_t *wqh = &congestion_wqh[rw];
+       wait_queue_head_t *wqh = &congestion_wqh[sync];
 
-       bit = (rw == WRITE) ? BDI_write_congested : BDI_read_congested;
+       bit = sync ? BDI_sync_congested : BDI_async_congested;
        clear_bit(bit, &bdi->state);
        smp_mb__after_clear_bit();
        if (waitqueue_active(wqh))
@@ -297,29 +296,29 @@ void clear_bdi_congested(struct backing_dev_info *bdi, int rw)
 }
 EXPORT_SYMBOL(clear_bdi_congested);
 
-void set_bdi_congested(struct backing_dev_info *bdi, int rw)
+void set_bdi_congested(struct backing_dev_info *bdi, int sync)
 {
        enum bdi_state bit;
 
-       bit = (rw == WRITE) ? BDI_write_congested : BDI_read_congested;
+       bit = sync ? BDI_sync_congested : BDI_async_congested;
        set_bit(bit, &bdi->state);
 }
 EXPORT_SYMBOL(set_bdi_congested);
 
 /**
  * congestion_wait - wait for a backing_dev to become uncongested
- * @rw: READ or WRITE
+ * @sync: SYNC or ASYNC IO
  * @timeout: timeout in jiffies
  *
  * Waits for up to @timeout jiffies for a backing_dev (any backing_dev) to exit
  * write congestion.  If no backing_devs are congested then just wait for the
  * next write to be completed.
  */
-long congestion_wait(int rw, long timeout)
+long congestion_wait(int sync, long timeout)
 {
        long ret;
        DEFINE_WAIT(wait);
-       wait_queue_head_t *wqh = &congestion_wqh[rw];
+       wait_queue_head_t *wqh = &congestion_wqh[sync];
 
        prepare_to_wait(wqh, &wait, TASK_UNINTERRUPTIBLE);
        ret = io_schedule_timeout(timeout);