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authorTrond Myklebust <Trond.Myklebust@netapp.com>2012-05-23 13:24:36 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2012-05-23 15:21:13 -0400
commit4697bd5e9419348ef9fa9b55cefe4355ad9d3d01 (patch)
tree20bf5da80d10ec4df42ae0c3067af39a36f11c28 /fs/nfs/internal.h
parent7b38c3682c5cab4f98751d5fe57b78a59020653d (diff)
downloadlinux-4697bd5e9419348ef9fa9b55cefe4355ad9d3d01.tar.gz
NFSv4: Fix a race in the net namespace mount notification
Since the struct nfs_client gets added to the global nfs_client_list
before it is initialised, it is possible that rpc_pipefs_event can
end up trying to create idmapper entries on such a thing.

The solution is to have the mount notification wait for the
initialisation of each nfs_client to complete, and then to
skip any entries for which the it failed.

Reported-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Acked-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Diffstat (limited to 'fs/nfs/internal.h')
-rw-r--r--fs/nfs/internal.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 5ea571e8d0e9..1848a7275592 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -168,6 +168,7 @@ extern struct nfs_server *nfs_clone_server(struct nfs_server *,
 					   struct nfs_fh *,
 					   struct nfs_fattr *,
 					   rpc_authflavor_t);
+extern int nfs_wait_client_init_complete(const struct nfs_client *clp);
 extern void nfs_mark_client_ready(struct nfs_client *clp, int state);
 extern struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp,
 					     const struct sockaddr *ds_addr,