JFFS2: mount time, SUMMARY and gc.c ?

[Artem B. Bityuckiy]

On Fri, 7 Jan 2005, Steven Scholz wrote:

> Hi there,
> 
> > I noticed that "jffs2_gcd_mtd0" is heavily running after boot consuming 
> > much time.
> > 
> > gc.c:jffs2_garbage_collect_pass() gets called very often - 596 times!
> 
> Well, actually it is only 293 times.
> (My mtd0 has 110 x 64KiB sectors = 7040KiB)
> 
> But still why is it done everytime I boot my target?
This is how JFFS2 implemented. It skips nodes CRC checking during mount 
and does this lated in background. Actually, you can't write anything to 
your flash untill the GC thread (jffs2_gcd_mtd0) have not completed 
checking. But you may read from JFFS2 during that checking process.

> 
> Thanks.
> 
> -- 
> Steven Scholz
> 
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> 

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