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authorTrond Myklebust <Trond.Myklebust@netapp.com>2006-08-22 20:06:24 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2006-09-22 23:24:54 -0400
commit275a082fe9308e710324e26ccb5363c53d8fd45f (patch)
treee97df6e45f98ea2827f71dc749f8cd47f3f353cc /block/ll_rw_blk.c
parent94a6d75320b3681e6e728b70e18bd186cb55e682 (diff)
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Add a real API for dealing with blk_congestion_wait()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'block/ll_rw_blk.c')
-rw-r--r--block/ll_rw_blk.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index ddd9253f9d5..dcbd6ff1fa3 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -2734,6 +2734,18 @@ long blk_congestion_wait(int rw, long timeout)
EXPORT_SYMBOL(blk_congestion_wait);
+/**
+ * blk_congestion_end - wake up sleepers on a congestion queue
+ * @rw: READ or WRITE
+ */
+void blk_congestion_end(int rw)
+{
+ wait_queue_head_t *wqh = &congestion_wqh[rw];
+
+ if (waitqueue_active(wqh))
+ wake_up(wqh);
+}
+
/*
* Has to be called with the request spinlock acquired
*/