PM / Hibernate: Thaw processes in SNAPSHOT_CREATE_IMAGE ioctl test path

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Commit 2aede851dd (PM / Hibernate: Freeze
kernel threads after preallocating memory) moved the freezing of kernel
threads to hibernation_snapshot() function.

So now, if the call to hibernation_snapshot() returns early due to a
successful hibernation test, the caller has to thaw processes to ensure
that the system gets back to its original state.

But in SNAPSHOT_CREATE_IMAGE hibernation ioctl, the caller does not thaw
processes in case hibernation_snapshot() returned due to a successful
freezer test. Fix this issue. But note we still send the value of 'in_suspend'
(which is now 0) to userspace, because we are not in an error path per-se,
and moreover, the value of in_suspend correctly depicts the situation here.

Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

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This commit is contained in:

Srivatsa S. Bhat 2011-12-01 22:33:10 +01:00 • committed by Rafael J. Wysocki

parent 0118521cc7

commit 97819a2622

3 changed files with 11 additions and 4 deletions

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2

kernel/power/hibernate.c

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2

kernel/power/power.h

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11

kernel/power/user.c

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