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authorStanislav Kinsbursky <skinsbursky@parallels.com>2012-08-20 18:00:26 +0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2012-10-01 15:25:35 -0700
commit8e2461444319b8f3fe47b94ea9b5d2e1dd8adadb (patch)
tree6f0bf79be0c107aa419398af2fb4f0ff6bdddbe0 /fs/nfs/callback.c
parent691c457ae635a063e0e4c8551ba4566eab9a17e3 (diff)
downloadlinux-8e2461444319b8f3fe47b94ea9b5d2e1dd8adadb.tar.bz2
NFS: callback service start function introduced
This is just a code move, which from my POW makes code looks better. I.e. now on start we have 3 different stages: 1) Service creation. 2) Service per-net data allocation. 3) Service start. Patch also renames goto label "out_err:" into "err_start:" to reflect new changes. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/callback.c')
-rw-r--r--fs/nfs/callback.c77
1 files changed, 45 insertions, 32 deletions
diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index a528cb75121e..5d5f9d10cfd0 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -217,6 +217,46 @@ static inline void nfs_callback_bc_serv(u32 minorversion, struct rpc_xprt *xprt,
}
#endif /* CONFIG_NFS_V4_1 */
+static int nfs_callback_start_svc(int minorversion, struct rpc_xprt *xprt,
+ struct svc_serv *serv)
+{
+ struct svc_rqst *rqstp;
+ int (*callback_svc)(void *vrqstp);
+ struct nfs_callback_data *cb_info = &nfs_callback_info[minorversion];
+ char svc_name[12];
+ int ret;
+ int minorversion_setup;
+
+ nfs_callback_bc_serv(minorversion, xprt, serv);
+
+ minorversion_setup = nfs_minorversion_callback_svc_setup(minorversion,
+ serv, &rqstp, &callback_svc);
+ if (!minorversion_setup) {
+ /* v4.0 callback setup */
+ rqstp = nfs4_callback_up(serv);
+ callback_svc = nfs4_callback_svc;
+ }
+
+ if (IS_ERR(rqstp))
+ return PTR_ERR(rqstp);
+
+ svc_sock_update_bufs(serv);
+
+ sprintf(svc_name, "nfsv4.%u-svc", minorversion);
+ cb_info->serv = serv;
+ cb_info->rqst = rqstp;
+ cb_info->task = kthread_run(callback_svc, cb_info->rqst, svc_name);
+ if (IS_ERR(cb_info->task)) {
+ ret = PTR_ERR(cb_info->task);
+ svc_exit_thread(cb_info->rqst);
+ cb_info->rqst = NULL;
+ cb_info->task = NULL;
+ return PTR_ERR(cb_info->task);
+ }
+ dprintk("nfs_callback_up: service started\n");
+ return 0;
+}
+
static int nfs_callback_up_net(int minorversion, struct svc_serv *serv, struct net *net)
{
int ret;
@@ -299,12 +339,8 @@ static struct svc_serv *nfs_callback_create_svc(int minorversion)
int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt)
{
struct svc_serv *serv;
- struct svc_rqst *rqstp;
- int (*callback_svc)(void *vrqstp);
struct nfs_callback_data *cb_info = &nfs_callback_info[minorversion];
- char svc_name[12];
int ret = 0;
- int minorversion_setup;
struct net *net = xprt->xprt_net;
mutex_lock(&nfs_callback_mutex);
@@ -324,34 +360,10 @@ int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt)
if (ret < 0)
goto err_net;
- nfs_callback_bc_serv(minorversion, xprt, serv);
-
- minorversion_setup = nfs_minorversion_callback_svc_setup(minorversion,
- serv, &rqstp, &callback_svc);
- if (!minorversion_setup) {
- /* v4.0 callback setup */
- rqstp = nfs4_callback_up(serv);
- callback_svc = nfs4_callback_svc;
- }
-
- if (IS_ERR(rqstp)) {
- ret = PTR_ERR(rqstp);
- goto out_err;
- }
-
- svc_sock_update_bufs(serv);
+ ret = nfs_callback_start_svc(minorversion, xprt, serv);
+ if (ret < 0)
+ goto err_start;
- sprintf(svc_name, "nfsv4.%u-svc", minorversion);
- cb_info->serv = serv;
- cb_info->rqst = rqstp;
- cb_info->task = kthread_run(callback_svc, cb_info->rqst, svc_name);
- if (IS_ERR(cb_info->task)) {
- ret = PTR_ERR(cb_info->task);
- svc_exit_thread(cb_info->rqst);
- cb_info->rqst = NULL;
- cb_info->task = NULL;
- goto out_err;
- }
out:
/*
* svc_create creates the svc_serv with sv_nrthreads == 1, and then
@@ -363,7 +375,8 @@ out:
err_create:
mutex_unlock(&nfs_callback_mutex);
return ret;
-out_err:
+
+err_start:
svc_shutdown_net(serv, net);
err_net:
dprintk("NFS: Couldn't create callback socket or server thread; "