On Mon, 5 Nov 2018, Matthew Wilcox wrote: > When testing in userspace, UBSAN pointed out that shifting into the sign > bit is undefined behaviour. It doesn't really make sense to ask for the > highest set bit of a negative value, so just turn the argument type into > an unsigned int. > > Some architectures (eg ppc) already had it declared as an unsigned int, > so I don't expect too many problems. > > Signed-off-by: Matthew Wilcox <wi...@infradead.org>
Acked-by: Thomas Gleixner <t...@linutronix.de>
