In D53429#1221417, @jhb wrote:

Eh, I'm not sure this is actually the style we want? Lots of places in the tree fix the diff problem by just using multiple += statements, e.g.:

FOO= foo
FOO+= bar
FOO+= baz

OK. Don't delete cbb/pccbb or references to it. It's the cardbus bridge.
Don't delete exca. Cardbus still uses it. I thought I'd eliminated it, but I just checked and it's still there. It's used to turn off PC Cards that happen to get inserted into cardbus slots and little else.

Address the rest of the comments (without moving README to comments).

• All relevant comments I left in the kqueue example apply to the rest of the examples, of course.
• It seems like in all examples, apart from simple.c, ibuf and obuf are the same. Couldn't we just remove one and keep a buf only? This way we avoid the memcpy() and the 2nd malloc().
• Regarding the README, I think it'd be even better to move its content into comments inside oss.h in the appropriate places. This would make it easier to understand both what the code does exactly (especially in the fragment setting parts), as well as making sure the README is read, because currently I think it's quite easy to miss it.