netdev - [PATCH 1/7][MAC8021]: Fix one more call to synchronize

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Message-ID: <4821CE54.9000401@openvz.org>
Date:	Wed, 07 May 2008 19:44:20 +0400
From:	Pavel Emelyanov <xemul@...nvz.org>
To:	Johannes Berg <johannes@...solutions.net>,
	"John W. Linville" <linville@...driver.com>
CC:	linux-wireless@...r.kernel.org,
	Linux Netdev List <netdev@...r.kernel.org>
Subject: [PATCH 1/7][MAC8021]: Fix one more call to synchronize_rcu in atomic
 context.

(This set applies OK without the previous one of 4 patches,
 but with some fuzz in the 7th one)


The mesh_path_node_free() does so under hashwlock.

But, this one is called
1. from mesh_path_add() after an old hash is hidden and
   synchronize_rcu() is calld
2. mesh_pathtbl_unregister(), when the module is being
   unloaded and no devices exist to mess with this hash.

So, it seems to me, that simply removing the call is OK.

Signed-off-by: Pavel Emelyanov <xemul@...nvz.org>

---
 net/mac80211/mesh_pathtbl.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index 7097ef9..0b6c4bf 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -458,7 +458,6 @@ static void mesh_path_node_free(struct hlist_node *p, bool free_leafs)
 	struct mpath_node *node = hlist_entry(p, struct mpath_node, list);
 	mpath = node->mpath;
 	hlist_del_rcu(p);
-	synchronize_rcu();
 	if (free_leafs)
 		kfree(mpath);
 	kfree(node);
-- 
1.5.3.4

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