2.5.1 – intermediate bio stuff

Linus: “I just made a 2.5.1, but I’m still concentrating on bio stuff, so don’t
bother sending me other patches unless they are serious bug-fixes to
something else.”

2.5.1 is hopefully a good interim stage - many block drivers should work
fine, but many more do not.  However, the pre-patches were getting
largish, so I'd rather do a 2.5.1 than wait for all the details.

As to other stuff - note the separation of drivers for new and old tulip
chips: if you have an old 2104x tulip chip (as opposed to the newer 2114x
chips) the regular tulip driver doesn't work any more for you. Don't be
surprised, select CONFIG_DE2104X.

                Linus

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final:
 - Al Viro: floppy_eject cleanup, mount cleanups
 - Jens Axboe: bio updates
 - Ingo Molnar: mempool fixes
 - GOTO Masanori: Fix O_DIRECT error handling