#ifndef _LINUX_PIPE_FS_I_H#define _LINUX_PIPE_FS_I_Hstruct pipe_inode_info {	struct wait_queue * wait;	char * base;	unsigned int start;	unsigned int len;	unsigned int lock;	unsigned int rd_openers;	unsigned int wr_openers;	unsigned int readers;	unsigned int writers;};#define PIPE_WAIT(inode)	((inode).u.pipe_i.wait)#define PIPE_BASE(inode)	((inode).u.pipe_i.base)#define PIPE_START(inode)	((inode).u.pipe_i.start)#define PIPE_LEN(inode)		((inode).u.pipe_i.len)#define PIPE_RD_OPENERS(inode)	((inode).u.pipe_i.rd_openers)#define PIPE_WR_OPENERS(inode)	((inode).u.pipe_i.wr_openers)#define PIPE_READERS(inode)	((inode).u.pipe_i.readers)#define PIPE_WRITERS(inode)	((inode).u.pipe_i.writers)#define PIPE_LOCK(inode)	((inode).u.pipe_i.lock)#define PIPE_SIZE(inode)	PIPE_LEN(inode)#define PIPE_EMPTY(inode)	(PIPE_SIZE(inode)==0)#define PIPE_FULL(inode)	(PIPE_SIZE(inode)==PIPE_BUF)#define PIPE_FREE(inode)	(PIPE_BUF - PIPE_LEN(inode))#define PIPE_END(inode)		((PIPE_START(inode)+PIPE_LEN(inode))&\							   (PIPE_BUF-1))#define PIPE_MAX_RCHUNK(inode)	(PIPE_BUF - PIPE_START(inode))#define PIPE_MAX_WCHUNK(inode)	(PIPE_BUF - PIPE_END(inode))#endif