NFSv4: Don't call nfs4_state_mark_reclaim_reboot() from error handlers

In the case of a server reboot, the state recovery thread starts by calling
nfs4_state_end_reclaim_reboot() in order to avoid edge conditions when
the server reboots while the client is in the middle of recovery.

However, if the client has already marked the nfs4_state as requiring
reboot recovery, then the above behaviour will cause the recovery thread to
treat the open as if it was part of such an edge condition: the open will
be recovered as if it was part of a lease expiration (and all the locks
will be lost).
Fix is to remove the call to nfs4_state_mark_reclaim_reboot from
nfs4_async_handle_error(), and nfs4_handle_exception(). Instead we leave it
to the recovery thread to do this for us.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 7f25246..88a9d93 100644 (file)
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -255,9 +255,6 @@ static int nfs4_handle_exception(const struct nfs_server *server, int errorcode,
                        nfs4_state_mark_reclaim_nograce(clp, state);
                        goto do_state_recovery;
                case -NFS4ERR_STALE_STATEID:
-                       if (state == NULL)
-                               break;
-                       nfs4_state_mark_reclaim_reboot(clp, state);
                case -NFS4ERR_STALE_CLIENTID:
                case -NFS4ERR_EXPIRED:
                        goto do_state_recovery;
@@ -3414,9 +3411,6 @@ nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server,
                        nfs4_state_mark_reclaim_nograce(clp, state);
                        goto do_state_recovery;
                case -NFS4ERR_STALE_STATEID:
-                       if (state == NULL)
-                               break;
-                       nfs4_state_mark_reclaim_reboot(clp, state);
                case -NFS4ERR_STALE_CLIENTID:
                case -NFS4ERR_EXPIRED:
                        goto do_state_recovery;