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From: "Kim Moung-Soo" <mskim@impresstek.co.kr>
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Date: Mon, 16 May 2005 10:27:41 +0900
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Subject: The romfs corruption problem after writing mtdblock!
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I'm using uClinux 2.4.22 on ARM board and have a problem with the romfs.
My machine has 4 partitions on the NOR flash memory like below.
mtdblock 1: boot loader
mtdblock 2: 2nd boot loader
mtdblock 3: kernel and root file system(romfs)
mtdblock 4: user data

Everything works fine until I write area of user data, mtdblock 4.
After I write something on mtdblock4, romfs on mtdblock 3 corrupts
sometimes.
The symptom is that some files have gone in the directory or content of
file is wrong.
Even it happens I think the data in flash memory is okay because after
it reboot every thing is in there.
I use open("/dev/mtdblock/4") and write() to access it directly.
Can I use open(), write() function to access mtdblock 4?