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[ Upstream commitd39ca2590d] This reverts commit0d4a6608f6. Willem reported that after commit0d4a6608f6("udp: do rmem bulk free even if the rx sk queue is empty") the memory allocated by an almost idle system with many UDP sockets can grow a lot. For stable kernel keep the solution as simple as possible and revert the offending commit. Reported-by: Willem de Bruijn <willemdebruijn.kernel@gmail.com> Diagnosed-by: Eric Dumazet <eric.dumazet@gmail.com> Fixes:0d4a6608f6("udp: do rmem bulk free even if the rx sk queue is empty") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
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.