在 Ext2fs 中,为了在一个扇区中擦除单个字节,必须将整个扇区复制到 RAM,然后擦除,然后重写入。
To erase a single byte in a sector in Ext2fs, a whole sector has to be copied to RAM, erased, then rewritten.
当需要更改少量数据时,Ext2文件系统将整个扇区复制到内存(DRAM)中,在内存中合并新数据,并写回整个扇区。
When a little amount of data needs to be changed, the Ext2 filesystem copies the whole sector to memory (DRAM), merges the new data in memory, and writes back the whole sector.
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