How to produce dirty space

[Artem B. Bityutskiy]

Bernhard Priewasser wrote:
> Hi all,
> 
> I want to generate some dirty space in a mounted JFFS2 for test 
> purposes. I tried to get the FS dirty for hours now... but I couldn't 
> compete against the erase_pending list. (BTW: how is kupdated set up?)
> Maybe... I'm not the first one who wants to do some tests on a dirty FS, 
> perhaps there is some existing code... :-)

Create a file and make a small change in it. It is unlikely that the 
corresponding eraseblock will be garbage collected soon, so you'll have 
dirty space.

For the information when things are flushed see "/proc/sys/vm - the 
virtual memory subsystem" at Documentation/filesystems/proc.txt.

-- 
Best Regards,
Artem B. Bityutskiy,
St.-Petersburg, Russia.