From 4e43df38a2e6c876d3c8ecc4196ed67a895c425d Mon Sep 17 00:00:00 2001
From: Marcel Holtmann <marcel@holtmann.org>
Date: Wed, 24 Apr 2019 22:18:53 +0200
Subject: genetlink: use idr_alloc_cyclic for family->id assignment
When allocating the next family->id it makes more sense to use
idr_alloc_cyclic to avoid re-using a previously used family->id as much
as possible.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/netlink/genetlink.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index f0ec068e1d02..cb69d35c8e6a 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -362,8 +362,8 @@ int genl_register_family(struct genl_family *family)
} else
family->attrbuf = NULL;
- family->id = idr_alloc(&genl_fam_idr, family,
- start, end + 1, GFP_KERNEL);
+ family->id = idr_alloc_cyclic(&genl_fam_idr, family,
+ start, end + 1, GFP_KERNEL);
if (family->id < 0) {
err = family->id;
goto errout_free;
--
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