From 8f8e7a50f450fcb86a5b2ffb94543c57a14f8260 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Mon, 14 Aug 2006 13:11:15 -0400
Subject: [PATCH] SUNRPC: Fix dentry refcounting issues with users of
rpc_pipefs
rpc_unlink() and rpc_rmdir() will dput the dentry reference for you.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
(cherry picked from a05a57effa71a1f67ccbfc52335c10c8b85f3f6a commit)
---
fs/nfs/idmap.c | 1 -
net/sunrpc/auth_gss/auth_gss.c | 1 -
net/sunrpc/clnt.c | 15 ++++++---------
3 files changed, 6 insertions(+), 11 deletions(-)
diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c
index df0be1214358..07a5dd57646e 100644
--- a/fs/nfs/idmap.c
+++ b/fs/nfs/idmap.c
@@ -131,7 +131,6 @@ nfs_idmap_delete(struct nfs4_client *clp)
if (!idmap)
return;
rpc_unlink(idmap->idmap_dentry);
- dput(idmap->idmap_dentry);
clp->cl_idmap = NULL;
kfree(idmap);
}
diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index beaa7b848246..ef1cf5b476c8 100644
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -719,7 +719,6 @@ gss_destroy(struct rpc_auth *auth)
gss_auth = container_of(auth, struct gss_auth, rpc_auth);
rpc_unlink(gss_auth->dentry);
- dput(gss_auth->dentry);
gss_auth->dentry = NULL;
gss_mech_put(gss_auth->mech);
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index d307556872db..d9eac7069101 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -184,7 +184,6 @@ rpc_new_client(struct rpc_xprt *xprt, char *servname,
out_no_auth:
if (!IS_ERR(clnt->cl_dentry)) {
rpc_rmdir(clnt->cl_dentry);
- dput(clnt->cl_dentry);
rpc_put_mount();
}
out_no_path:
@@ -251,10 +250,8 @@ rpc_clone_client(struct rpc_clnt *clnt)
new->cl_autobind = 0;
new->cl_oneshot = 0;
new->cl_dead = 0;
- if (!IS_ERR(new->cl_dentry)) {
+ if (!IS_ERR(new->cl_dentry))
dget(new->cl_dentry);
- rpc_get_mount();
- }
rpc_init_rtt(&new->cl_rtt_default, clnt->cl_xprt->timeout.to_initval);
if (new->cl_auth)
atomic_inc(&new->cl_auth->au_count);
@@ -317,11 +314,15 @@ rpc_destroy_client(struct rpc_clnt *clnt)
clnt->cl_auth = NULL;
}
if (clnt->cl_parent != clnt) {
+ if (!IS_ERR(clnt->cl_dentry))
+ dput(clnt->cl_dentry);
rpc_destroy_client(clnt->cl_parent);
goto out_free;
}
- if (!IS_ERR(clnt->cl_dentry))
+ if (!IS_ERR(clnt->cl_dentry)) {
rpc_rmdir(clnt->cl_dentry);
+ rpc_put_mount();
+ }
if (clnt->cl_xprt) {
xprt_destroy(clnt->cl_xprt);
clnt->cl_xprt = NULL;
@@ -331,10 +332,6 @@ rpc_destroy_client(struct rpc_clnt *clnt)
out_free:
rpc_free_iostats(clnt->cl_metrics);
clnt->cl_metrics = NULL;
- if (!IS_ERR(clnt->cl_dentry)) {
- dput(clnt->cl_dentry);
- rpc_put_mount();
- }
kfree(clnt);
return 0;
}
--
2.20.1