ext4文件系统代码中自带有用于调试的debug语句,如函数ext4_map_blocks中的
ext_debug("ext4_map_blocks(): inode %lu, flag %d, max_blocks %u,"
"logical block %lu\n", inode->i_ino, flags, map->m_len,
(unsigned long) map->m_lblk);
请问如何使得这种语句生效?多谢
ext4文件系统代码中自带有用于调试的debug语句,如函数ext4_map_blocks中的
ext_debug("ext4_map_blocks(): inode %lu, flag %d, max_blocks %u,"
"logical block %lu\n", inode->i_ino, flags, map->m_len,
(unsigned long) map->m_lblk);
请问如何使得这种语句生效?多谢
貌似是通过编译开关控制的。
#ifdef EXT_DEBUG
#define ext_debug(fmt, ...) printk(fmt, ##__VA_ARGS__)
#else
#define ext_debug(fmt, ...) no_printk(fmt, ##__VA_ARGS__)
#endif