[maemo-developers] [maemo-developers] swapfile is a huge improvement!

[From: Frantisek Dufka]

Well it is solvable but hard. You could halt everything and display 
something like 'Poor human, give me my card back or I will reboot'. But 
this has to be done in low level (kernel thread?, direct framebuffer 
access?) because anything in userspace can segfault when swap is removed.

I know similar things worked on Amiga. You removed floppy when writing 
and it opened a dialog 'error writing sector x, please insert disk' and 
when you gave it back it worked and continued. Or when the disk was full 
in the middle of writing of one file you could let the dialog be, delete 
other files and click continue and it worked. Never seen this type of 
recovery later on any newer system :-)

Frantisek

Juha Yrjölä wrote:
> 
> We really can't rely on the user nicely waiting for any kind of
> permission from our UI.  There _will_ be cases when the MMC is abruptly
> removed.  It is unacceptable for an end-user device to go down in flames
> whenever this happens.
> 
> The issues regarding what happens when a swap device disappears from
> underneath have to fixed first.
> 
> Cheers,
> Juha
> 
> 
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