Re: Fix SWSUSP & !SWAP

[Martin J. Bligh]

> On Thu, 2003-04-24 at 08:36, Marc Giger wrote:
>> Ok! I see the advantages / disadvantages of each version. But what
>> happens if the memory AND swap space are full and nothing can't be
>> freed? When I watch the memory and swap consumption on my laptop, I
>> think it's the most time the case...
> 
> If you're getting yourself in that situation, you should be increasing
> your swap space (and memory if possible) anyway.
> 
>> Another question:
>> Is it a big problem to save the memory in a separate file on the file
>> system, and save somewhere the pointer to it (as example in swap. Also
>> we could set a flag in swap so that we now that the last shutdown was
>> a hybernation). One Problem will be, that we don't know the filesystem
>> type on resume...(We could save the module in swap...)
>> All that is just theoretical. It's only a idea.
> 
> I guess the simplest answer is would it be worth the pain? Since disk
> space is cheap, it just requires a little forethought when installing
> Linux, to ensure enough swap is allocated. I certainly understand that
> using a file rather than swap makes adjusting the amount of space
> available easier, but as you rightly acknowledge, it does complicate
> things a fair bit more.

Can't you just create a pre-reserved separate swsusp area on disk the size 
of RAM (maybe a partition rather than a file to make things easier), and 
then you know you're safe (basically what Marc was suggesting, except pre-allocated)? Or does that make me the prince of all evil? ;-)

However much swap space you allocate, it can always all be used, so that
seems futile ...

M.