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authorEric Dumazet <eric.dumazet@gmail.com>2012-01-12 04:41:32 +0000
committerDavid S. Miller <davem@davemloft.net>2012-01-12 12:26:56 -0800
commitcf778b00e96df6d64f8e21b8395d1f8a859ecdc7 (patch)
tree4cc157d564bd65d687bdf722af3202e9e277ea98 /net/core/net-sysfs.c
parent9ee6045f09a7875ebe55b9942b232a19076b157b (diff)
net: reintroduce missing rcu_assign_pointer() calls
commit a9b3cd7f32 (rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER) did a lot of incorrect changes, since it did a complete conversion of rcu_assign_pointer(x, y) to RCU_INIT_POINTER(x, y). We miss needed barriers, even on x86, when y is not NULL. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Stephen Hemminger <shemminger@vyatta.com> CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/net-sysfs.c')
-rw-r--r--net/core/net-sysfs.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index abf4393a77b3..f3dbd4f596a4 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -1177,9 +1177,9 @@ static ssize_t store_xps_map(struct netdev_queue *queue,
nonempty = 1;
}
- if (nonempty)
- RCU_INIT_POINTER(dev->xps_maps, new_dev_maps);
- else {
+ if (nonempty) {
+ rcu_assign_pointer(dev->xps_maps, new_dev_maps);
+ } else {
kfree(new_dev_maps);
RCU_INIT_POINTER(dev->xps_maps, NULL);
}