On Sun, Jan 3, 2010 at 1:08 AM, Arun S <inbox1.arun@xxxxxxxx> wrote: > Hi, > I have couple of doubts regarding jffs2 filesystem. > > 1. I've found instances of writing mtd partitions with dd (like dd > if=rootfs.jffs2 of=/dev/mtd...) and another method is to use flash_erase > /dev/mtd.. and then copying rootfs.jffs2 to /dev/mtd.. using cp command > followed by sync. What is the difference between these two?. cp uses buffered write. > 2. How jffs2 works? I mean if my root partition is jffs2, if I access some > files, is it accessed real-time from the flash device? > Yes. But there might be some caching involved(in buffered read/writes eg.cp). > OR > > Does the kernel uncompress the jffs2 partition and stores it in memory > during boot and access it from there when a read request comes? No -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
