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SubjectRe: [RFC] userland swsusp
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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".

Stefan
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