lkml.org 
[lkml]   [2005]   [Nov]   [17]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateThu, 17 Nov 2005 11:01:26 +0100
FromPavel Machek <>
SubjectRe: [RFC] userland swsusp
Hi!

> > 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.

Or use a filesystem that honours read-only option, like ext2...

> 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.

Yes, that is the plan.

> > 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".

Yes.
									Pavel
-- 
Thanks, Sharp!
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-11-17 11:05    [from the cache]
©2003-2008