diff options
| author | Eric Dumazet <eric.dumazet@gmail.com> | 2012-01-12 04:41:32 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-01-12 12:26:56 -0800 |
| commit | cf778b00e96df6d64f8e21b8395d1f8a859ecdc7 (patch) | |
| tree | 4cc157d564bd65d687bdf722af3202e9e277ea98 /net/core/net-sysfs.c | |
| parent | 9ee6045f09a7875ebe55b9942b232a19076b157b (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.c | 6 |
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); } |