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authorEric Dumazet <dada1@cosmosbay.com>2008-01-18 03:31:36 -0800
committerDavid S. Miller <davem@davemloft.net>2008-01-28 15:02:45 -0800
commitb59cfbf77dc8368c2c90b012c79553613f4d70c3 (patch)
treef5e2e9ffa576c80137126e7ebe70114b88d98003 /net/ipv4/fib_lookup.h
parent95b7d924a589dbefc7ae2ea6c7144b86b75d6a47 (diff)
[FIB]: Fix rcu_dereference() abuses in fib_trie.c
node_parent() and tnode_get_child() currently use rcu_dereference(). These functions are called from both - readers only paths (where rcu_dereference() is needed), and - writer path (where rcu_dereference() is not needed) To make explicit where rcu_dereference() is really needed, I introduced new node_parent_rcu() and tnode_get_child_rcu() functions which use rcu_dereference(), while node_parent() and tnode_get_child() dont use it. Then I changed calling sites where rcu_dereference() was really needed to call the _rcu() variants. This should have no impact but for alpha architecture, and may help future sparse checks. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/fib_lookup.h')
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