tag	line	file	source code
PIPE_HEAD	36	fs/fifo.c	if (PIPE_HEAD(*inode) != PIPE_TAIL(*inode))
PIPE_HEAD	115	fs/fifo.c	PIPE_HEAD(*inode) = PIPE_TAIL(*inode) = 0;
PIPE_HEAD	161	fs/fifo.c	PIPE_HEAD(*inode) = PIPE_TAIL(*inode) = 0;
PIPE_HEAD	279	fs/inode.c	PIPE_HEAD(*inode) = PIPE_TAIL(*inode) = 0;
PIPE_HEAD	77	fs/pipe.c	chars = PAGE_SIZE-PIPE_HEAD(*inode);
PIPE_HEAD	82	fs/pipe.c	memcpy_fromfs(PIPE_BASE(*inode)+PIPE_HEAD(*inode), buf, chars );
PIPE_HEAD	84	fs/pipe.c	PIPE_HEAD(*inode) += chars;
PIPE_HEAD	85	fs/pipe.c	PIPE_HEAD(*inode) &= (PAGE_SIZE-1);
PIPE_HEAD	25	include/linux/pipe_fs_i.h	#define PIPE_SIZE(inode)  ((PIPE_HEAD(inode)-PIPE_TAIL(inode))&(PAGE_SIZE-1))
PIPE_HEAD	26	include/linux/pipe_fs_i.h	#define PIPE_EMPTY(inode)  (PIPE_HEAD(inode)==PIPE_TAIL(inode))