Triggering huge-page collapse from user space [LWN.net]

Triggering huge-page collapse from user space

Posted Mar 15, 2022 0:41 UTC (Tue) by Karellen (subscriber, #67644)
In reply to: Triggering huge-page collapse from user space by Sesse
Parent article: Triggering huge-page collapse from user space

I suppose it's the difference between a solid object collapsing into individual pieces, like a wall collapsing into a disconnected pile of bricks; or a sparsely connected group of elements collapsing into a single mass, like a house of cards collapsing into a dense pile of cards.

Do things generally collapse outwards, or inwards?

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Triggering huge-page collapse from user space

Posted Mar 15, 2022 8:16 UTC (Tue) by Wol (subscriber, #4433) [Link]

Think of the energy. It takes an release of energy to make things explode, a minimal flow of energy to make things collapse, while an implosion gives of a blast of energy.

So I guess collapse is the right word here. There's a minimal change observable from outside the system, while what was there is still there, just looking a lot smaller because all the empty space has been squeezed out.

Cheers,
Wol