With
this Star Student Project model, the
guest file system uses asynchronous I/O instructions to deal with write
requests Star Student Project.
However, this Star Student Project model
has several disadvantages. When a Star
Student Project guest decides to flush its dirty data (for example, when
the application explicitly invokes a flush operation), the Star Student Project host file system has to write the data
synchronously back to the disk in real time. If the Star Student Project amount of data to be transferred is large, the
normal Star Student Project operations
of other guest systems will seriously be affected by these intensive
synchronous I/O operations.