Re: [PATCH] Provide u64 version of jiffies_to_usecs() in kernel/tsacct.c

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Jonathan Lim wrote:
It's possible that the values used in and returned from jiffies_to_usecs() are
incorrect because of truncation when variables of type u64 are involved.  So a
function specific to that type is used instead.

Much worse than that. There are internal overflows in the conversions. See the patch I recently submitted to -mm.

	-hpa
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