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Jesper Dangaard Brouer says: ==================== net: revert lib/percpu_counter API for fragmentation mem accounting There is a bug in fragmentation codes use of the percpu_counter API, that can cause issues on systems with many CPUs, above 24 CPUs. After much consideration and different attempts at solving the API usage. The conclusion is to revert to the simple atomic_t API instead. The ratio between batch size and threshold size make it a bad use-case for the lib/percpu_counter API. As using the correct API calls will unfortunately cause systems with many CPUs to always execute an expensive sum across all CPUs. Plus the added complexity is not worth it. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.