[PATCH] x86_64: change_page_attr logic fixes from Andrea
change_page_attr logic fixes from Andrea This avoids reference counting leaks and adds BUGs for more wrong cases. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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