Write ordering in Ext4

[Theodore Ts'o]

On Tue, Jun 04, 2013 at 11:17:38AM -0600, Arul Selvan wrote:
> thanks that answered my question. One more question, is it possible
> to stop the delayed block allocation in ext4 ?

The fact that you are asking all of these questions is making me very
nervous.  Why do you care?  Application programmers should ***not***
be depending on low-level file system behavior.

If you care about what might happen after a crash, you need to use
fsync().

						- Ted