Messages in this thread |  | | Date | Wed, 7 Nov 2001 21:26:11 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: [PATCH] net/ipv4/*, net/core/neighbour.c jiffies cleanup |
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On Wed, 7 Nov 2001, Krishna Kumar wrote: > > > > In short: It is wrong to do > > > > if (jiffies <= start+HZ) > > > > and it is _right_ to do > > > > if (jiffies - start <= HZ) > > Actually this last part is wrong, isn't it ? jiffies <= start + HZ is also > a correct way to do it, since start+HZ will overflow to the current value > of jiffies when HZ time elapses. So the above two statements are IDENTICAL.
No.
Try it out with a few examples. You'll see.
Linus
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