Kernel release status

The current 2.6 prepatch is 2.6.7-rc1, which was announced by Linus on May 22. The most significant changes are certainly the scheduling domains patch, and, surprisingly, the full set of object-based reverse mapping patches, including the anon_vma work. This patch also includes a generic msleep() function for millisecond-scale waits, a CPU frequency control update, a set of autofs4 patches, a set of patches to shrink the heavily-used dentry structure, the "filtered wakeup" mechanism (see the May 5 Kernel Page), a libata update, some architecture updates, the removal of the Intermezzo filesystem due to lack of use and support, a sysctl variable giving "huge page" access to a administrator-specified group, the ability to re-enable interrupts while waiting in spin_lock_irqsave() (for all architectures now), support in reiserfs for quotas and external attributes, the NUMA API, a big ramdisk fixup, and lots of fixes. See the long-format changlog for the details.

Linus's BitKeeper repository contains an implementation of separate interrupt stacks for the PPC64 architecture, an ALSA update, and a fair number of fixes.

The current tree from Andrew Morton is 2.6.6-mm5. Recent additions to -mm include a reworking of the symbolic link following code (allowing the eventual increase of the maximum symbolic link depth from five to eight), a new block I/O request barrier implementation (for IDE and SCSI), and the usual collection of fixes. Andrew has also quietly restored the 8KB stack option on x86 systems.

The current 2.4 prepatch is 2.4.27-pre3; no prepatches have been released since May 18.

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