alloc_pipe_info    43 fs/fifo.c      		pipe = alloc_pipe_info(inode);
alloc_pipe_info   889 fs/pipe.c      	pipe = alloc_pipe_info(inode);
alloc_pipe_info   970 fs/splice.c    		pipe = alloc_pipe_info(NULL);
alloc_pipe_info   140 include/linux/pipe_fs_i.h struct pipe_inode_info * alloc_pipe_info(struct inode * inode);