pbackground       384 include/linux/writeback.h void global_dirty_limits(unsigned long *pbackground, unsigned long *pdirty);
pbackground       459 mm/page-writeback.c void global_dirty_limits(unsigned long *pbackground, unsigned long *pdirty)
pbackground       466 mm/page-writeback.c 	*pbackground = gdtc.bg_thresh;