tag	line	file	source code
s_firstfreeblock	96	fs/ext/inode.c	s->u.ext_sb.s_zmap[0] = (struct buffer_head *) es->s_firstfreeblock;
s_firstfreeblock	187	fs/ext/inode.c	es->s_firstfreeblock = (unsigned long) sb->u.ext_sb.s_zmap[0];
s_firstfreeblock	57	include/linux/ext_fs.h	unsigned long s_firstfreeblock;