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Linux development kernel 2.3.15 released

Aug 26, 1999, 01:49 (1 Talkback[s])

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Disclaimer: Don't use this kernel unless you know what you are getting into.

    From: Linus Torvalds <>
 Subject: Linux-2.3.15..
    Date: Wed, 25 Aug 1999 16:36:10 -0700 (PDT)
      To: Kernel Mailing List <>
      Cc: "David S. Miller" <>, Richard Henderson <>,        Andrea Arcangeli <>

There's a rather huge patch-set out there now, taking the 2.3.x series to 2.3.15.

This has a lot of the merge code I've been sent over the last two weeks, but I will invariably have missed some, if for no other reason than simply that I got absolutely _flooded_ by people sending me patches.

One of the more interesting things was the SMP pipe cleanup sent by Richard, but try as I might it was never really stable under load on x86 - not with the plain semaphores in 2.3.14, and not with the patches Andrea had either. I assume Richard tested it on an alpha with the much more well-thought-out atomic operation that the alpha provides.

I ended up rewriting the x86 semaphore code (and some of Richards pipe code too, for that matter, to get rid of some races in waking things up), and it doesn't show the problems I saw before, but hey, maybe I just exchanged one set of problems for another set that I can't trigger any more. Give me feedback, please.

Other features that don't impact everybody, but are rather major:

  • ATM support merged in
  • firewalling is gone (again), replaced by an even more generic netfilter facility.
  • general networking merges and updates
  • Various driver updates (ISDN, ISA PnP, sound, fbcon, usb, intelliport, you name it)
  • make system call return type "long" even if the system call only returns valid data in the lower order bits - we use the high bits for error handling, and some 64-bit architectures care (read: the Merced calling conventions want this because they don't automatically extend the return type - I bet it will be a new portability issue for other programs than just the kernel)

Have fun,