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PM / Hibernate: Compress hibernation image with LZO

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Compress hibernation image with LZO in order to save on I/O and
therefore time to hibernate/thaw.

[rjw: Added hibernate=nocompress command line option instead of just
 nocompress which would be confusing, fixed a couple of compiler
 warnings, fixed kerneldoc comments, minor cleanups.]

Signed-off-by: Bojan Smojver <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Bojan Smojver 2010-09-09 23:06:23 +02:00 • committed by Rafael J. Wysocki
commit f996fc9671
6 changed files with 306 additions and 8 deletions
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3
Documentation/power/swsusp.txt
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@ -66,7 +66,8 @@ swsusp saves the state of the machine into active swaps and then reboots or
powerdowns. You must explicitly specify the swap partition to resume from with
``resume='' kernel option. If signature is found it loads and restores saved
state. If the option ``noresume'' is specified as a boot parameter, it skips
the resuming.
the resuming. If the option ``hibernate=nocompress'' is specified as a boot
parameter, it saves hibernation image without compression.
In the meantime while the system is suspended you should not add/remove any
of the hardware, write to the filesystems, etc.