r254147: kernel build failure: vm_page.c:1206:20: error: use of undeclared identifier 'VPO_BUSY'

Most recent sources fails in kernel build:


[...]
cc  -c -pipe -O3 -fno-strict-aliasing -march=native -std=c99  -Wall
-Wredundant-decls -Wnested-externs -Wstrict-prototypes
-Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual  -Wundef
-Wno-pointer-sign -fformat-extensions  -Wmissing-include-dirs
-fdiagnostics-show-option  -Wno-error-tautological-compare
-Wno-error-empty-body  -Wno-error-parentheses-equality  -nostdinc  -I.
-I/usr/src/sys -I/usr/src/sys/contrib/altq
-I/usr/src/sys/contrib/libfdt -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS
-include opt_global.h  -fno-omit-frame-pointer
-mno-omit-leaf-frame-pointer -mno-aes -mno-avx -mcmodel=kernel
-mno-red-zone -mno-mmx -mno-sse -msoft-float
-fno-asynchronous-unwind-tables -ffreestanding -fstack-protector
-Werror  /usr/src/sys/vm/vm_page.c /usr/src/sys/vm/vm_page.c:1205:21:
error: use of undeclared identifier 'VPO_BUSY' if (mold->oflags &
VPO_BUSY) { ^ /usr/src/sys/vm/vm_page.c:1206:20: error: use of
undeclared identifier 'VPO_BUSY' mold->oflags &= ~VPO_BUSY; ^ 2 errors
generated. *** Error code 1


Regards,

Oliver