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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-17 08:58:52 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-17 08:58:52 -0700 |
| commit | b225ee5bed70254a100896c473e6dd8c2be45c18 (patch) | |
| tree | 2f044d5898d15edcff858f624618c788d5b58760 /net/ipv4/route.c | |
| parent | 2e532d68a2b3e2aa6b19731501222069735c741c (diff) | |
| parent | 95a5afca4a8d2e1cb77e1d4bc6ff9f718dc32f7a (diff) | |
| download | linux-b225ee5bed70254a100896c473e6dd8c2be45c18.tar.bz2 | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
net: Remove CONFIG_KMOD from net/ (towards removing CONFIG_KMOD entirely)
ipv4: Add a missing rcu_assign_pointer() in routing cache.
[netdrvr] ibmtr: PCMCIA IBMTR is ok on 64bit
xen-netfront: Avoid unaligned accesses to IP header
lmc: copy_*_user under spinlock
[netdrvr] myri10ge, ixgbe: remove broken select INTEL_IOATDMA
Diffstat (limited to 'net/ipv4/route.c')
| -rw-r--r-- | net/ipv4/route.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 942be04e7955..2ea6dcc3e2cc 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -1109,7 +1109,12 @@ restart: printk("\n"); } #endif - rt_hash_table[hash].chain = rt; + /* + * Since lookup is lockfree, we must make sure + * previous writes to rt are comitted to memory + * before making rt visible to other CPUS. + */ + rcu_assign_pointer(rt_hash_table[hash].chain, rt); spin_unlock_bh(rt_hash_lock_addr(hash)); *rp = rt; return 0; |