Defined in 3 files as a prototype:

• Documentation/device-mapper/dm-io.txt, line 704 (as a prototype)
• drivers/usb/storage/sddr55.h, line 729 (as a prototype)
• include/asm-um/mman.h, line 1701 (as a prototype)

Referenced in 3 files:

• fs/ntfs/endian.h, line 94
• include/asm-ia64/shmparam.h, line 37
• scripts/mkversion, line 96