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authorChuck Lever <chuck.lever@oracle.com>2008-06-25 17:24:54 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2008-07-09 12:09:37 -0400
commit40fef8a649e5344bfb6a67a7cc3def3e0dad6448 (patch)
treebfcbea1a0cf81ca14d59debb6fb77e83a430b2ab /kernel/extable.c
parent8842413aa4c3220ce9313791f99808fc149ca16d (diff)
SUNRPC: Use only rpcbind v2 for AF_INET requests
Some server vendors support the higher versions of rpcbind only for AF_INET6. The kernel doesn't need to use v3 or v4 for AF_INET anyway, so change the kernel's rpcbind client to query AF_INET servers over rpcbind v2 only. This has a few interesting benefits: 1. If the rpcbind request is going over TCP, and the server doesn't support rpcbind versions 3 or 4, the client reduces by two the number of ephemeral ports left in TIME_WAIT for each rpcbind request. This will help during NFS mount storms. 2. The rpcbind interaction with servers that don't support rpcbind versions 3 or 4 will use less network traffic. Also helpful during mount storms. 3. We can eliminate the kernel build option that controls whether the kernel's rpcbind client uses rpcbind version 3 and 4 for AF_INET servers. Less complicated kernel configuration... Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'kernel/extable.c')
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