Subject: Re: swapfs and uvm.
To: Chuck Silvers <>
From: R. C. Dowdeswell <>
List: tech-kern
Date: 03/15/2000 12:42:50
On 953134286 seconds since the Beginning of the UNIX epoch
Chuck Silvers wrote:
>I did say "enhance FFS this way (and also to call some device hook
>when it frees a block)".  the idea being that FFS can easily inform the
>underlying device when it's no longer using a given block.  real devices
>will ignore this information and this virtual swap-backed device will
>convert the page(s) back into zero-fill memory.  (this would work best
>if the blocksize was at least as big as the page size, but you'd really
>want that anyway so you could eventually do uvm loanout on the pages
>when applications read() files).

Oh, yes you did.  Sorry that I missed that.  I guess it serves me
right for replying at 2:30am right before bed.  :-)

 == Roland Dowdeswell                      http://www.Imrryr.ORG/~elric/  ==
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