+
+19: All new userspace interfaces are documented in Documentation/ABI/.
+ See Documentation/ABI/README for more information.
+ Patches that change userspace interfaces should be CCed to
+ linux-api@vger.kernel.org.
+
+20: Check that it all passes `make headers_check'.
+
+21: Has been checked with injection of at least slab and page-allocation
+ failures. See Documentation/fault-injection/.
+
+ If the new code is substantial, addition of subsystem-specific fault
+ injection might be appropriate.
+
+22: Newly-added code has been compiled with `gcc -W' (use "make
+ EXTRA_CFLAGS=-W"). This will generate lots of noise, but is good for
+ finding bugs like "warning: comparison between signed and unsigned".
+
+23: Tested after it has been merged into the -mm patchset to make sure
+ that it still works with all of the other queued patches and various
+ changes in the VM, VFS, and other subsystems.
+
+24: All memory barriers {e.g., barrier(), rmb(), wmb()} need a comment in the
+ source code that explains the logic of what they are doing and why.
+
+25: If any ioctl's are added by the patch, then also update
+ Documentation/ioctl/ioctl-number.txt.
+
+26: If your modified source code depends on or uses any of the kernel
+ APIs or features that are related to the following kconfig symbols,
+ then test multiple builds with the related kconfig symbols disabled
+ and/or =m (if that option is available) [not all of these at the
+ same time, just various/random combinations of them]:
+
+ CONFIG_SMP, CONFIG_SYSFS, CONFIG_PROC_FS, CONFIG_INPUT, CONFIG_PCI,
+ CONFIG_BLOCK, CONFIG_PM, CONFIG_HOTPLUG, CONFIG_MAGIC_SYSRQ,
+ CONFIG_NET, CONFIG_INET=n (but latter with CONFIG_NET=y)