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146500e960
We don't have to use an entire 'long' for the number of elements in the pagevec; we know it's a number between 0 and 14 (now 15). So we can store it in a char, and then the bool packs next to it and we still have two or six bytes of padding for more elements in the header. That gives us space to cram in an extra page. Link: http://lkml.kernel.org/r/20171206022521.GM26021@bombadil.infradead.org Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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| linux | ||
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