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Add a reference to sunrpc in svc_addsock 

The svc_addsock function adds transport instances without taking a
reference on the sunrpc.ko module, however, the generic transport
destruction code drops a reference when a transport instance
is destroyed.

Add a try_module_get call to the svc_addsock function for transport
instances added by this function.

Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Tested-by: Jeff Moyer <jmoyer@redhat.com>
This commit is contained in:
Tom Tucker 2008-11-23 09:58:08 -06:00 committed by J. Bruce Fields
parent 2c5e76158f
commit 2da2c21d75
1 changed files with 7 additions and 2 deletions
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9
net/sunrpc/svcsock.c
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@ -1183,7 +1183,11 @@ int svc_addsock(struct svc_serv *serv,
else if (so->state > SS_UNCONNECTED)
err = -EISCONN;
else {
svsk = svc_setup_socket(serv, so, &err, SVC_SOCK_DEFAULTS);
if (!try_module_get(THIS_MODULE))
err = -ENOENT;
else
svsk = svc_setup_socket(serv, so, &err,
SVC_SOCK_DEFAULTS);
if (svsk) {
struct sockaddr_storage addr;
struct sockaddr *sin = (struct sockaddr *)&addr;
@ -1196,7 +1200,8 @@ int svc_addsock(struct svc_serv *serv,
spin_unlock_bh(&serv->sv_lock);
svc_xprt_received(&svsk->sk_xprt);
err = 0;
}
} else
module_put(THIS_MODULE);
}
if (err) {
sockfd_put(so);