../fs/namespace.c: note: in included file (through ../include/linux/mm_types.h, ../include/linux/mmzone.h, ../include/linux/gfp.h, ../include/linux/xarray.h, ../include/linux/list_lru.h, ../include/linux/fs.h, ...): ../include/linux/rbtree.h:74:9: error: incompatible types in comparison expression (different address spaces): ../include/linux/rbtree.h:74:9: struct rb_node [noderef] __rcu * ../include/linux/rbtree.h:74:9: struct rb_node * Warning: ../fs/namespace.c:2772 function parameter 'pinned' not described in 'do_lock_mount' ../arch/x86/boot/version.c:18:12: warning: symbol 'kernel_version' was not declared. Should it be static? ../fs/namespace.c: note: in included file (through ../include/linux/mm_types.h, ../include/linux/mmzone.h, ../include/linux/gfp.h, ../include/linux/xarray.h, ../include/linux/list_lru.h, ../include/linux/fs.h, ...): ../include/linux/rbtree.h:74:9: error: incompatible types in comparison expression (different address spaces): ../include/linux/rbtree.h:74:9: struct rb_node [noderef] __rcu * ../include/linux/rbtree.h:74:9: struct rb_node * Warning: ../fs/namespace.c:2772 function parameter 'pinned' not described in 'do_lock_mount' ../arch/x86/boot/version.c:18:12: warning: symbol 'kernel_version' was not declared. Should it be static?