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As the intend of this patch series is to completely remove dst gc, we need to call dst_dev_put() to release the reference to dst->dev when removing routes from fib because we won't keep the gc list anymore and will lose the dst pointer right after removing the routes. Without the gc list, there is no way to find all the dst's that have dst->dev pointing to the going-down dev. Hence, we are doing dst_dev_put() immediately before we lose the last reference of the dst from the routing code. The next dst_check() will trigger a route re-lookup to find another route (if there is any). Signed-off-by: Wei Wang <weiwan@google.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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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.