> 1) You don't learn anything by doing them. You don't learn nothing > about btrfs internals, filesystems in general, kernel programming in > general, general programming in C, etc. It ends up being only a waste > of time for you;
It is useful for one reason. If you would like to get used to the workflow of kernel development, this seems to be useful for a lot of people. In fact, Linus himself has encouraged this.
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