Here are some fixes for NFSD callback including one that addresses the problem of server hang on reboot with 6.6.3 reported recently by Wolfgang Walter <linux-nfs@xxxxxxx>: 0001: SUNRPC: remove printk when back channel request not found 0002: NFSD: restore delegation's sc_count if nfsd4_run_cb fails 0003: NFSD: Fix server reboot hang problem when callback workqueue --- fs/nfsd/nfs4state.c | 23 ++++++++++++++++++----- fs/nfsd/state.h | 2 ++ net/sunrpc/svcsock.c | 8 +------- 3 files changed, 21 insertions(+), 12 deletions(-)