[maemo-developers] [maemo-developers] Adding swapon/off to Jakub's Load-Plugin applet

[From: Armin M. Warda]

On Thursday 23 February 2006 01:34, David D. Hagood wrote:
> alterego at sdf.lonestar.org wrote:
> >> Any suggestions?
> >
> > How about hooking swapoff to the hotplug event for the MMC card
> > cover opening? Maybe even insertion also.

Yes, I really would like to try this, but I do not know how this has 
to be done. Can anybody lend me a hand? (Of cause I would make 
this feature optional, with an enable/disable checkbox in the 
settings.)

> Yes, *please* hook the cover open/cover close events and
> enable/disable swap as appropriate.

But this will only make sense for a swap living on the RS-MMC.
If you are running with a swap file on the internal flash,
you would not want to swapoff when the RS-MMC lid is opened...

Do you think, detection of the prefix /dev/mmcblk0 for a swap device -
or /media/mmc1/ for a swap file - in /proc/swaps, is good enough to 
conclude, that the swap lives on the RS-MMC? Is absense of these 
prefixes good enough to conclude, that the swap down _not_ live on 
the RS-MMC?

> Also, please scan not just for swap files, but also for swap
> partitions -

Yes, via /proc/swaps I autodetect an active swap-file or -device, 
if none has been configured in the Load-Plugin applet settings. 

> I prefer to have a swap partition

Me too, I use /dev/mmcblk0p2 - I repartitioned the RS-MMC with two
partitions: mmcblk0p1 with 480MB FAT and mmcblk0p2 with 30 MB swap.
USB-plugging the N770 to the PC only umounts the 1st partition,
the swap on the seconds remains available.

  Armin.

-- 
   --- May the Source be with you! Linux. ---
   --- http://www.arminwarda.mynetcologne.de/
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