Defined in 2 files as a config:

• include/asm-ia64/segment.h, line 1611 (as a config)
• include/asm-mips/ipcbuf.h, line 1603 (as a config)

Referenced in 3 files:

• fs/xfs/pagebuf/page_buf_trace.h, line 573
• include/asm-i386/user.h, line 51
• sound/pci/ice1712/delta.c, line 573