From 9f958ab8858c75df800e0121b1920182820cbc39 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 2 Jul 2007 13:58:33 -0400 Subject: NFSv4: Reduce the chances of an open_owner identifier collision Currently we just use a 32-bit counter. Signed-off-by: Trond Myklebust --- fs/nfs/nfs4_fs.h | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) (limited to 'fs/nfs/nfs4_fs.h') diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index c97a0ad8430e..44b56c915f72 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -70,19 +70,25 @@ static inline void nfs_confirm_seqid(struct nfs_seqid_counter *seqid, int status seqid->flags |= NFS_SEQID_CONFIRMED; } +struct nfs_unique_id { + struct rb_node rb_node; + __u64 id; +}; + /* * NFS4 state_owners and lock_owners are simply labels for ordered * sequences of RPC calls. Their sole purpose is to provide once-only * semantics by allowing the server to identify replayed requests. */ struct nfs4_state_owner { - spinlock_t so_lock; - struct list_head so_list; /* per-clientid list of state_owners */ + struct nfs_unique_id so_owner_id; struct nfs_client *so_client; - u32 so_id; /* 32-bit identifier, unique */ - atomic_t so_count; + struct rb_node so_client_node; struct rpc_cred *so_cred; /* Associated cred */ + + spinlock_t so_lock; + atomic_t so_count; struct list_head so_states; struct list_head so_delegations; struct nfs_seqid_counter so_seqid; @@ -108,7 +114,7 @@ struct nfs4_lock_state { #define NFS_LOCK_INITIALIZED 1 int ls_flags; struct nfs_seqid_counter ls_seqid; - u32 ls_id; + struct nfs_unique_id ls_id; nfs4_stateid ls_stateid; atomic_t ls_count; }; @@ -189,7 +195,6 @@ extern void nfs4_renew_state(struct work_struct *); /* nfs4state.c */ struct rpc_cred *nfs4_get_renew_cred(struct nfs_client *clp); -extern u32 nfs4_alloc_lockowner_id(struct nfs_client *); extern struct nfs4_state_owner * nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *); extern void nfs4_put_state_owner(struct nfs4_state_owner *); -- cgit v1.2.3