drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c:84: warning: ‘proc_set_timeout’ defined but not used
drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c:95: warning: ‘proc_memory_alloc’ defined but not used
drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c:119: warning: ‘proc_pages_alloc’ defined but not used
drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c:143: warning: ‘proc_mem_max’ defined but not used
drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c:167: warning: ‘proc_pages_max’ defined but not used
drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c:191: warning: ‘proc_max_dirty_pages_in_mb’ defined but not used
drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c:232: warning: ‘proc_alloc_fail_rate’ defined but not used
Make the existing #ifdef CONFIG_SYSCTL cover all sysctl-related
functions to fix this.