[LU-18113] move DEBUG_REQ out of spinlock

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.16.0
• Severity: 3
• Assignee: Andriy Skulysh
• Reporter: Andriy Skulysh

Description

It may help with slow cancel processing:

Stack :
crash_nmi_callback
nmi_handle
default_do_nmi
do_nmi
end_repeat_nmi
number
vsnprintf
libcfs_debug_msg
_debug_req
ptlrpc_server_request_add
ptlrpc_server_handle_req_in
ptlrpc_main
kthread
ret_from_fork
Progs: 1836895 "ldlm_cn00_011"