Implementing A Disk-Based File-System - Summary

• Use the generic VFS functions whenever possible.
• Implement things in small steps.
• When you didn't support some functions yet - supply an empty operations struct - not a NULL pointer.
• When updating a buffer_head or an inode - mark it as dirty!
• Whenever you change an inode - update the relevant times - no one will do that for you.
• Updating VFS objects is decoupled from updating disk objects.

Originally written by guy keren