Re: [PATCH 0/3] ramzswap: Eliminate stale data in compressedmemory

From: Linus Torvalds
Date: Wed May 05 2010 - 11:16:17 EST




On Wed, 5 May 2010, Nitin Gupta wrote:
>
> ramzswap driver creates RAM based block devices which can be
> used (only) as swap disks. Pages swapped to these disks are
> compressed and stored in memory itself.

Ok, this patch series looks way better, if only because it looks less
hacky.

That said, I absolutely _hate_ the f*cking notifier model that takes
"type" flags. It's a disgrace. It's a horrible horrible model.

I'd much rather bind a nice "swap_operations" structure to the device, and
have that structure have function pointers for the different operations.
No stupid "operation type codes". Real, honest-to-goodness function
pointers.

The notifier layer is a total piece of sh*t. I'm sorry I ever merged it,
and I'm _doubly_ sorry that it's use is so horribly widespread. It's a
mistake.

Linus
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