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Compiler does not really know that skb_shinfo(to|from) are constants in skb_try_coalesce(), lets cache their values to shrink code. We might even take care of skb_zcopy() calls later. $ size net/core/skbuff.o.before net/core/skbuff.o text data bss dec hex filename 40727 1298 0 42025 a429 net/core/skbuff.o.before 40631 1298 0 41929 a3c9 net/core/skbuff.o Signed-off-by: Eric Dumazet <edumazet@google.com> 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.