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I don't see what prevents rmmod (unregister_all is called) while a dump is active. Even if we'd add rtnl lock/unlock pair to unregister_all (as done here), thats not enough either as rtnl_lock is released right before the dump process starts. So this adds a refcount: * acquire rtnl mutex * bump refcount * release mutex * start the dump ... and make unregister_all remove the callbacks (no new dumps possible) and then wait until refcount is 0. Signed-off-by: Florian Westphal <fw@strlen.de> Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org> 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.