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Linus Torvalds: Linux 2.6.20-rc1

Dec 14, 2006, 15:15 (0 Talkback[s])
(Other stories by Linus Torvalds)

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Ok, the two-week merge period is over, and -rc1 is out there.

I'm really hoping that we can keep the 2.6.20 release calmer and without any of the dragging-out-due-to-core-changes that we've had lately. We didn't actually merge any really core changes here, with the biggest conceptual one being the "work_struct" split into regular work and "delayed" work, so I'm hoping we can really end up with an easy 2.6.20 release.

Some of the commits there are pretty big patches, but more than a couple of them are due to fairly straightforward search-and-replace things (like a largely scripted removal of unnecessary casts of the return value of "kmalloc()", for example, or the switch to "ktermios" for the tty layer, or the introduction of "struct path" in the VFS layer instead of keeping the f_{dentry,vfsmnt} entries separate, or indeed the removal of SLAB_xxx constant names in favour of the standard GFP_xxx ones).

So while the patch itself isn't actually all that much smaller than usual, at least my personal gut feel is that the actual changes are not as intrusive, just in some cases have big diffs.

But both the diffstat and the shortlog are still too big to fit in the kernel mailing list limits, so you'll just have to take my word for it. Or get the git repo, and do your own delving into things with

      git log v2.6.19..v2.6.20-rc1 | git shortlog

There are a few areas of note:

  • the aforementioned "workqueue" changes (where we still have some work to do to finalize the proper actions on all architectures: it's being somewhat discussed on the arch mailing lists, hopefully we'll have it all resolved by -rc2, and it doesn't really worry me)
  • lockless page cache (RCU lookups of radix trees)
  • kvm driver for all those crazy virtualization people to play with
  • networking updates (DCCP, address-family agnostic connection tracking in netfilter, sparse byte order annotations, yadda yadda)
  • HID layer separated out of the USB stuff (bluetooth apparently wants the HID stuff too)
  • tons and tons of driver (ftape removal, ATA, pcmcia, i2c, infiniband, dvb, networking..) and architecture updates (arm, mips, powerpc, sh)

and probably some I just forgot about entirely.