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| author | Stanislav Kinsbursky <skinsbursky@parallels.com> | 2012-04-20 18:11:02 +0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-04-27 14:09:59 -0400 |
| commit | a4dff1bc492ee4a2184d384ae8b5bcab5859e150 (patch) | |
| tree | b6bdb438cfa7c041d6e0a7b42f8c10c213961215 | |
| parent | 5794d21ef4639f0e33440927bb903f9598c21e92 (diff) | |
| download | linux-a4dff1bc492ee4a2184d384ae8b5bcab5859e150.tar.bz2 | |
SUNRPC: skip dead but not buried clients on PipeFS events
These clients can't be safely dereferenced if their counter in 0.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| -rw-r--r-- | net/sunrpc/clnt.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 67972462a543..d10ebc4310f7 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -218,7 +218,8 @@ static struct rpc_clnt *rpc_get_client_for_event(struct net *net, int event) if (((event == RPC_PIPEFS_MOUNT) && clnt->cl_dentry) || ((event == RPC_PIPEFS_UMOUNT) && !clnt->cl_dentry)) continue; - atomic_inc(&clnt->cl_count); + if (atomic_inc_not_zero(&clnt->cl_count) == 0) + continue; spin_unlock(&sn->rpc_client_lock); return clnt; } |