Name
SOFTWARE_SUSPEND — Software suspend
Enable machine suspension.
When the machine is suspended, an image is saved in your active
swap. Upon next boot, pass the resume=/dev/swappartition argument to the
kernel to have it detect the saved image, restore memory state from
it, and continue to run as before. If you do not want the previous
state to be reloaded, use the noresume kernel argument. However, note that
your partitions will be fsck'd and
you must issue mkswap on your swap
partitions again. The procedure does not work with swap files.
Right now you may boot without resuming and then resume later, but in the meantime you cannot use those swap partitions/files which were involved in suspending. In this case, also, there is a risk that buffers on disk won't match with saved ones.
For more information take a look at Documentation/power/swsusp.txt.
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