diff options
Diffstat (limited to 'fs/nfs/nfs4state.c')
| -rw-r--r-- | fs/nfs/nfs4state.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index e61f68d5ef2..d41a3518509 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -518,6 +518,8 @@ nfs4_alloc_state_owner(struct nfs_server *server, nfs4_init_seqid_counter(&sp->so_seqid); atomic_set(&sp->so_count, 1); INIT_LIST_HEAD(&sp->so_lru); + seqcount_init(&sp->so_reclaim_seqcount); + mutex_init(&sp->so_delegreturn_mutex); return sp; } @@ -1390,8 +1392,9 @@ static int nfs4_reclaim_open_state(struct nfs4_state_owner *sp, const struct nfs * recovering after a network partition or a reboot from a * server that doesn't support a grace period. */ -restart: spin_lock(&sp->so_lock); + write_seqcount_begin(&sp->so_reclaim_seqcount); +restart: list_for_each_entry(state, &sp->so_states, open_states) { if (!test_and_clear_bit(ops->state_flag_bit, &state->flags)) continue; @@ -1412,6 +1415,7 @@ restart: } spin_unlock(&state->state_lock); nfs4_put_open_state(state); + spin_lock(&sp->so_lock); goto restart; } } @@ -1449,12 +1453,17 @@ restart: goto out_err; } nfs4_put_open_state(state); + spin_lock(&sp->so_lock); goto restart; } + write_seqcount_end(&sp->so_reclaim_seqcount); spin_unlock(&sp->so_lock); return 0; out_err: nfs4_put_open_state(state); + spin_lock(&sp->so_lock); + write_seqcount_end(&sp->so_reclaim_seqcount); + spin_unlock(&sp->so_lock); return status; } @@ -1877,7 +1886,13 @@ again: status = PTR_ERR(clnt); break; } - clp->cl_rpcclient = clnt; + /* Note: this is safe because we haven't yet marked the + * client as ready, so we are the only user of + * clp->cl_rpcclient + */ + clnt = xchg(&clp->cl_rpcclient, clnt); + rpc_shutdown_client(clnt); + clnt = clp->cl_rpcclient; goto again; case -NFS4ERR_MINOR_VERS_MISMATCH: |