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authorTrond Myklebust <Trond.Myklebust@netapp.com>2007-12-11 22:01:56 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2007-12-11 22:01:56 -0500
commit5cef338b30c110daf547fb13d99f0c77f2a79fbc (patch)
tree4608bf1961dfb3f2f50d72d1b3c7a82daf031933
parent4584f520e1f773082ef44ff4f8969a5d992b16ec (diff)
NFSv2/v3: Fix a memory leak when using -onolock
Neil Brown said: > Hi Trond, > > We found that a machine which made moderately heavy use of > 'automount' was leaking some nfs data structures - particularly the > 4K allocated by rpc_alloc_iostats. > It turns out that this only happens with filesystems with -onolock > set. > The problem is that if NFS_MOUNT_NONLM is set, nfs_start_lockd doesn't > set server->destroy, so when the filesystem is unmounted, the > ->client_acl is not shutdown, and so several resources are still > held. Multiple mount/umount cycles will slowly eat away memory > several pages at a time. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Acked-by: NeilBrown <neilb@suse.de>
-rw-r--r--fs/nfs/client.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 70587f383f1..a6f62549761 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -410,9 +410,6 @@ static int nfs_create_rpc_client(struct nfs_client *clp, int proto,
*/
static void nfs_destroy_server(struct nfs_server *server)
{
- if (!IS_ERR(server->client_acl))
- rpc_shutdown_client(server->client_acl);
-
if (!(server->flags & NFS_MOUNT_NONLM))
lockd_down(); /* release rpc.lockd */
}
@@ -755,6 +752,9 @@ void nfs_free_server(struct nfs_server *server)
if (server->destroy != NULL)
server->destroy(server);
+
+ if (!IS_ERR(server->client_acl))
+ rpc_shutdown_client(server->client_acl);
if (!IS_ERR(server->client))
rpc_shutdown_client(server->client);