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Some (possibly stupid) questions about creating a JFFS2 filesystem

Okay, so I have a few questions here. Apologies if they've been
answered elsewhere and I just haven't been able to find the answers.

1. How do I keep JFFS's garbage collection thread from touching a
particular block in flash? For the system in question, the bootloader
is on the same device as the JFFS partition, and I (obviously) don't
want JFFS's garbage collection erasing this block.

2. Why does the filesystem get so big? I have an input filesystem
that's ~2.7M and the resulting jffs2 image is 6M. 

I'm working on linux-i386 with a target platform for the filesystem of

Justin Wojdacki        
justin.wojdacki@xxxxxxx.com         (408) 350-5032
Communications Processors Group -- Analog Devices

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