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authorLinus Torvalds <torvalds@linux-foundation.org>2014-08-14 04:13:19 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-14 04:13:19 +0400
commit06b8ab55289345ab191bf4bf0e4acc6d4bdf293d (patch)
tree9af9215097e26c026f30a58c6ca3092ec15d1e1e /fs/nfs/client.c
parentdc1cc85133120e49c223f36aa77d398b8abac727 (diff)
parent71a6ec8ac587418ceb6b420def1ca44b334c1ff7 (diff)
downloadlinux-06b8ab55289345ab191bf4bf0e4acc6d4bdf293d.tar.xz
Merge tag 'nfs-for-3.17-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust: "Highlights include: - stable fix for a bug in nfs3_list_one_acl() - speed up NFS path walks by supporting LOOKUP_RCU - more read/write code cleanups - pNFS fixes for layout return on close - fixes for the RCU handling in the rpcsec_gss code - more NFS/RDMA fixes" * tag 'nfs-for-3.17-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (79 commits) nfs: reject changes to resvport and sharecache during remount NFS: Avoid infinite loop when RELEASE_LOCKOWNER getting expired error SUNRPC: remove all refcounting of groupinfo from rpcauth_lookupcred NFS: fix two problems in lookup_revalidate in RCU-walk NFS: allow lockless access to access_cache NFS: teach nfs_lookup_verify_inode to handle LOOKUP_RCU NFS: teach nfs_neg_need_reval to understand LOOKUP_RCU NFS: support RCU_WALK in nfs_permission() sunrpc/auth: allow lockless (rcu) lookup of credential cache. NFS: prepare for RCU-walk support but pushing tests later in code. NFS: nfs4_lookup_revalidate: only evaluate parent if it will be used. NFS: add checks for returned value of try_module_get() nfs: clear_request_commit while holding i_lock pnfs: add pnfs_put_lseg_async pnfs: find swapped pages on pnfs commit lists too nfs: fix comment and add warn_on for PG_INODE_REF nfs: check wait_on_bit_lock err in page_group_lock sunrpc: remove "ec" argument from encrypt_v2 operation sunrpc: clean up sparse endianness warnings in gss_krb5_wrap.c sunrpc: clean up sparse endianness warnings in gss_krb5_seal.c ...
Diffstat (limited to 'fs/nfs/client.c')
-rw-r--r--fs/nfs/client.c18
1 files changed, 13 insertions, 5 deletions
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 180d1ec9c32e..1c5ff6d58385 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -110,8 +110,8 @@ struct nfs_subversion *get_nfs_version(unsigned int version)
mutex_unlock(&nfs_version_mutex);
}
- if (!IS_ERR(nfs))
- try_module_get(nfs->owner);
+ if (!IS_ERR(nfs) && !try_module_get(nfs->owner))
+ return ERR_PTR(-EAGAIN);
return nfs;
}
@@ -158,7 +158,8 @@ struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_init)
goto error_0;
clp->cl_nfs_mod = cl_init->nfs_mod;
- try_module_get(clp->cl_nfs_mod->owner);
+ if (!try_module_get(clp->cl_nfs_mod->owner))
+ goto error_dealloc;
clp->rpc_ops = clp->cl_nfs_mod->rpc_ops;
@@ -190,6 +191,7 @@ struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_init)
error_cleanup:
put_nfs_version(clp->cl_nfs_mod);
+error_dealloc:
kfree(clp);
error_0:
return ERR_PTR(err);
@@ -252,6 +254,7 @@ void nfs_free_client(struct nfs_client *clp)
put_net(clp->cl_net);
put_nfs_version(clp->cl_nfs_mod);
kfree(clp->cl_hostname);
+ kfree(clp->cl_acceptor);
kfree(clp);
dprintk("<-- nfs_free_client()\n");
@@ -482,8 +485,13 @@ nfs_get_client(const struct nfs_client_initdata *cl_init,
struct nfs_net *nn = net_generic(cl_init->net, nfs_net_id);
const struct nfs_rpc_ops *rpc_ops = cl_init->nfs_mod->rpc_ops;
+ if (cl_init->hostname == NULL) {
+ WARN_ON(1);
+ return NULL;
+ }
+
dprintk("--> nfs_get_client(%s,v%u)\n",
- cl_init->hostname ?: "", rpc_ops->version);
+ cl_init->hostname, rpc_ops->version);
/* see if the client already exists */
do {
@@ -510,7 +518,7 @@ nfs_get_client(const struct nfs_client_initdata *cl_init,
} while (!IS_ERR(new));
dprintk("<-- nfs_get_client() Failed to find %s (%ld)\n",
- cl_init->hostname ?: "", PTR_ERR(new));
+ cl_init->hostname, PTR_ERR(new));
return new;
}
EXPORT_SYMBOL_GPL(nfs_get_client);