proc: pass "fd" by value in /proc/*/{fd,fdinfo} code
Pass "fd" directly, not via pointer -- one less memory read. Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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