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authorTom Tucker <tom@opengridcomputing.com>2007-12-30 21:08:20 -0600
committerJ. Bruce Fields <bfields@citi.umich.edu>2008-02-01 16:42:13 -0500
commit4e5caaa5f24b3df1fe01097e1e7576461e70d491 (patch)
treec682473e9a40f4e8a8a1317906a516b41d47ec30 /net/sunrpc/svc_xprt.c
parent9f8bfae693c724120ffc8fb77564f6deb508daf3 (diff)
downloadop-kernel-dev-4e5caaa5f24b3df1fe01097e1e7576461e70d491.zip
op-kernel-dev-4e5caaa5f24b3df1fe01097e1e7576461e70d491.tar.gz
svc: Move create logic to common code
Move the svc transport list logic into common transport creation code. Refactor this code path to make the flow of control easier to read. Move the setting and clearing of the BUSY_BIT during transport creation to common code. Signed-off-by: Tom Tucker <tom@opengridcomputing.com> Acked-by: Neil Brown <neilb@suse.de> Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Greg Banks <gnb@sgi.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'net/sunrpc/svc_xprt.c')
-rw-r--r--net/sunrpc/svc_xprt.c43
1 files changed, 25 insertions, 18 deletions
diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
index eb650af..271467c 100644
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c
@@ -105,6 +105,7 @@ void svc_xprt_init(struct svc_xprt_class *xcl, struct svc_xprt *xprt,
INIT_LIST_HEAD(&xprt->xpt_deferred);
mutex_init(&xprt->xpt_mutex);
spin_lock_init(&xprt->xpt_lock);
+ set_bit(XPT_BUSY, &xprt->xpt_flags);
}
EXPORT_SYMBOL_GPL(svc_xprt_init);
@@ -112,7 +113,6 @@ int svc_create_xprt(struct svc_serv *serv, char *xprt_name, unsigned short port,
int flags)
{
struct svc_xprt_class *xcl;
- int ret = -ENOENT;
struct sockaddr_in sin = {
.sin_family = AF_INET,
.sin_addr.s_addr = INADDR_ANY,
@@ -121,27 +121,34 @@ int svc_create_xprt(struct svc_serv *serv, char *xprt_name, unsigned short port,
dprintk("svc: creating transport %s[%d]\n", xprt_name, port);
spin_lock(&svc_xprt_class_lock);
list_for_each_entry(xcl, &svc_xprt_class_list, xcl_list) {
- if (strcmp(xprt_name, xcl->xcl_name) == 0) {
- spin_unlock(&svc_xprt_class_lock);
- if (try_module_get(xcl->xcl_owner)) {
- struct svc_xprt *newxprt;
- newxprt = xcl->xcl_ops->xpo_create
- (serv,
- (struct sockaddr *)&sin, sizeof(sin),
- flags);
- if (IS_ERR(newxprt)) {
- module_put(xcl->xcl_owner);
- ret = PTR_ERR(newxprt);
- } else
- ret = svc_xprt_local_port(newxprt);
- }
- goto out;
+ struct svc_xprt *newxprt;
+
+ if (strcmp(xprt_name, xcl->xcl_name))
+ continue;
+
+ if (!try_module_get(xcl->xcl_owner))
+ goto err;
+
+ spin_unlock(&svc_xprt_class_lock);
+ newxprt = xcl->xcl_ops->
+ xpo_create(serv, (struct sockaddr *)&sin, sizeof(sin),
+ flags);
+ if (IS_ERR(newxprt)) {
+ module_put(xcl->xcl_owner);
+ return PTR_ERR(newxprt);
}
+
+ clear_bit(XPT_TEMP, &newxprt->xpt_flags);
+ spin_lock_bh(&serv->sv_lock);
+ list_add(&newxprt->xpt_list, &serv->sv_permsocks);
+ spin_unlock_bh(&serv->sv_lock);
+ clear_bit(XPT_BUSY, &newxprt->xpt_flags);
+ return svc_xprt_local_port(newxprt);
}
+ err:
spin_unlock(&svc_xprt_class_lock);
dprintk("svc: transport %s not found\n", xprt_name);
- out:
- return ret;
+ return -ENOENT;
}
EXPORT_SYMBOL_GPL(svc_create_xprt);
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