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Save some bytes in mm_struct by filling holes Putting int values together for better packing on 64bit shrinks sizeof(struct mm_struct) from 776 bytes to 764 bytes. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>