From: Zhao Hongjiang <zhaohongjiang@xxxxxxxxxx>
Subject: drivers/infiniband/core/cm.c: convert to using idr_alloc_cyclic()
commit 3e6628c4b347 ("idr: introduce idr_alloc_cyclic()") adds a new
idr_alloc_cyclic routine and converts several of these users to it. This
is just a missed one - add it.
Signed-off-by: Zhao Hongjiang <zhaohongjiang@xxxxxxxxxx>
Cc: Roland Dreier <roland@xxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Sean Hefty <sean.hefty@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/infiniband/core/cm.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff -puN drivers/infiniband/core/cm.c~drivers-infiniband-core-cmc-convert-to-using-idr_alloc_cyclic drivers/infiniband/core/cm.c
--- a/drivers/infiniband/core/cm.c~drivers-infiniband-core-cmc-convert-to-using-idr_alloc_cyclic
+++ a/drivers/infiniband/core/cm.c
@@ -383,14 +383,11 @@ static int cm_alloc_id(struct cm_id_priv
{
unsigned long flags;
int id;
- static int next_id;
idr_preload(GFP_KERNEL);
spin_lock_irqsave(&cm.lock, flags);
- id = idr_alloc(&cm.local_id_table, cm_id_priv, next_id, 0, GFP_NOWAIT);
- if (id >= 0)
- next_id = max(id + 1, 0);
+ id = idr_alloc_cyclic(&cm.local_id_table, cm_id_priv, 0, 0, GFP_NOWAIT);
spin_unlock_irqrestore(&cm.lock, flags);
idr_preload_end();
_
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