* 'doc-subdirs' of git://git.kernel.org/pub/scm/linux/kernel/git/rdunlap/linux-docs:
Create/use more directory structure in the Documentation/ tree.
- directory with info on using Linux with the PowerPC.
preempt-locking.txt
- info on locking under a preemptive kernel.
+printk-formats.txt
+ - how to get printk format specifiers right
prio_tree.txt
- info on radix-priority-search-tree use for indexing vmas.
- ramdisk.txt
- - short guide on how to set up and use the RAM disk.
rbtree.txt
- info on what red-black trees are and what they are for.
- riscom8.txt
- - notes on using the RISCom/8 multi-port serial driver.
robust-futex-ABI.txt
- documentation of the robust futex ABI.
robust-futexes.txt