A simple filesystem to understand things.

This is a Work In Progress. Do not use this yet.

The source files are licensed under Creative Commons Zero License.
More information at:	http://creativecommons.org/publicdomain/zero/1.0/
Full license text at:	http://creativecommons.org/publicdomain/zero/1.0/legalcode

To compile:
------------
install linux kernel sources and run make from the checkedout directory.

To test:
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~/src/simplefs> make
~/src/simplefs> dd bs=4096 count=100 if=/dev/zero of=image
100+0 records in
100+0 records out
409600 bytes (410 kB) copied, 0.00175839 s, 233 MB/s
~/src/simplefs> ./mkfs-simplefs image
Super block written succesfully

# switch to root user (or use with sudo)

linux-okb0:/home/psankar/src/simplefs # insmod simplefs.ko
linux-okb0:/home/psankar/src/simplefs # dmesg
[ 2963.323701] Sucessfully registered simplefs
linux-okb0:/home/psankar/src/simplefs # mount -o loop -t simplefs image /home/psankar/src/simplefs/mount/
linux-okb0:/home/psankar/src/simplefs # dmesg
[ 2963.323701] Sucessfully registered simplefs
[ 2977.453535] The magic number obtained in disk is: [268640275]
[ 2977.453544] simplefs filesystem of version [1] formatted with a block size of [4096] detected in the device.
[ 2977.453551] simplefs is succesfully mounted on [/dev/loop1]
linux-okb0:/home/psankar/src/simplefs # umount mount/
linux-okb0:/home/psankar/src/simplefs # dmesg
[ 2963.323701] Sucessfully registered simplefs
[ 2977.453535] The magic number obtained in disk is: [268640275]
[ 2977.453544] simplefs filesystem of version [1] formatted with a block size of [4096] detected in the device.
[ 2977.453551] simplefs is succesfully mounted on [/dev/loop1]
[ 2994.184508] simplefs superblock is destroyed. Unmount succesful.
linux-okb0:/home/psankar/src/simplefs # rmmod simplefs.ko