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SUNRPC: subscribe RPC clients to pipefs notifications

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This patch subscribes RPC clients to RPC pipefs notifications. RPC clients
notifier block is registering with pipefs initialization during SUNRPC module
init.
This notifier callback is responsible for RPC client PipeFS directory and GSS
pipes creation. For pipes creation and destruction two additional callbacks
were added to struct rpc_authops.
Note that no locking required in notifier callback because PipeFS superblock
pointer is passed as an argument from it's creation or destruction routine and
thus we can be sure about it's validity.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Stanislav Kinsbursky
2012-01-11 19:18:17 +04:00
committed by Trond Myklebust
parent 70abc49b4f
commit 80df9d2022
5 changed files with 92 additions and 10 deletions
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10
net/sunrpc/auth_gss/auth_gss.c
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@@ -762,8 +762,10 @@ static void gss_pipes_dentries_destroy(struct rpc_auth *auth)
struct gss_auth *gss_auth;
gss_auth = container_of(auth, struct gss_auth, rpc_auth);
rpc_unlink(gss_auth->pipe[0]->dentry);
rpc_unlink(gss_auth->pipe[1]->dentry);
if (gss_auth->pipe[0]->dentry)
rpc_unlink(gss_auth->pipe[0]->dentry);
if (gss_auth->pipe[1]->dentry)
rpc_unlink(gss_auth->pipe[1]->dentry);
}
static int gss_pipes_dentries_create(struct rpc_auth *auth)
@@ -1614,7 +1616,9 @@ static const struct rpc_authops authgss_ops = {
.create = gss_create,
.destroy = gss_destroy,
.lookup_cred = gss_lookup_cred,
.crcreate = gss_create_cred
.crcreate = gss_create_cred,
.pipes_create = gss_pipes_dentries_create,
.pipes_destroy = gss_pipes_dentries_destroy,
};
static const struct rpc_credops gss_credops = {