mtd write takes 5 minutes

Hi,

I have a weird problem when writing hundreds of bytes to an mtd device. It takes about 5 minutes. The situation is as follows.

In module A initialization, a kernel thread is created to update some configuration which is stored in an mtd device. But this thead spent almost 5 minutes to finish writing hundreds of bytes data. What caused this problem? I guess the mtd write was waiting for resources. If so, what kind of resources did it wait for?

Thanks.

- Shawn.