taglinefilesource code
PIPE_HEAD382fs/ext/inode.cPIPE_HEAD(*inode) = PIPE_TAIL(*inode) = 0;
PIPE_HEAD370fs/ext/namei.cPIPE_HEAD(*inode) = PIPE_TAIL(*inode) = 0;
PIPE_HEAD33fs/fifo.cif (PIPE_HEAD(*inode) != PIPE_TAIL(*inode))
PIPE_HEAD268fs/inode.cPIPE_HEAD(*inode) = PIPE_TAIL(*inode) = 0;
PIPE_HEAD346fs/minix/inode.cPIPE_HEAD(*inode) = PIPE_TAIL(*inode) = 0;
PIPE_HEAD268fs/minix/namei.cPIPE_HEAD(*inode) = PIPE_TAIL(*inode) = 0;
PIPE_HEAD73fs/pipe.cchars = PAGE_SIZE-PIPE_HEAD(*inode);
PIPE_HEAD78fs/pipe.cmemcpy_fromfs(PIPE_BASE(*inode)+PIPE_HEAD(*inode), buf, chars );
PIPE_HEAD80fs/pipe.cPIPE_HEAD(*inode) += chars;
PIPE_HEAD81fs/pipe.cPIPE_HEAD(*inode) &= (PAGE_SIZE-1);
PIPE_HEAD21include/linux/pipe_fs_i.h#define PIPE_SIZE(inode)  ((PIPE_HEAD(inode)-PIPE_TAIL(inode))&(PAGE_SIZE-1))
PIPE_HEAD22include/linux/pipe_fs_i.h#define PIPE_EMPTY(inode)  (PIPE_HEAD(inode)==PIPE_TAIL(inode))