Messages in this thread | | | From | Stefan Rompf <> | Subject | Re: [RFC] userland swsusp | Date | Thu, 17 Nov 2005 08:19:16 +0100 |
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Am Mittwoch 16 November 2005 20:07 schrieb Pavel Machek:
> No. Writing to file would trash the filesystem. But you can bmap the file, > then write to the block device.
And for reading, I could used a device mapper enforced read only mount or filesystem code from grub.
Hmm, how about a possibility to ask the kernel for a list of free pages on a swap device? This way, userspace could write the image to swap as the kernel currently does, avoiding possible trouble with filesystems.
> Better avoid memory allocation.
And all memory allocated and mapped in advance would be part of the image. But this is totally acceptable for a "suspend helper".
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