Function prototype or declaration at include/linux/mm.h, line 1719 References: arch/arm/mm/dma-mapping.c, line 457 arch/arm/xen/enlighten.c, line 125 arch/x86/xen/grant-table.c, line 94 arch/x86/xen/grant-table.c, line 117 arch/x86/xen/grant-table.c, line 125 arch/x86/xen/mmu.c, line 2534 drivers/xen/gntdev.c, line 796 include/linux/mm.h, line 1719 mm/memory.c, line 2524 mm/memory.c, line 2543 mm/vmalloc.c, line 2227