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PM / Hibernate: Make snapshot_release() restore GFP mask 

If the process using the hibernate user space interface closes
/dev/snapshot after creating a hibernation image without thawing
tasks, snapshot_release() should call pm_restore_gfp_mask() to
restore the GFP mask used before the creation of the image.  Make
that happen.

Tested-by: Alexandre Felipe Muller de Souza <alexandrefm@mandriva.com.br>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: stable@kernel.org
This commit is contained in:
Rafael J. Wysocki 2011-05-10 21:10:01 +02:00
parent 87186475a4
commit 9744997a8a
1 changed files with 3 additions and 1 deletions
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4
kernel/power/user.c
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@ -135,8 +135,10 @@ static int snapshot_release(struct inode *inode, struct file *filp)
free_basic_memory_bitmaps();
data = filp->private_data;
free_all_swap_pages(data->swap);
if (data->frozen)
if (data->frozen) {
pm_restore_gfp_mask();
thaw_processes();
}
pm_notifier_call_chain(data->mode == O_RDONLY ?
PM_POST_HIBERNATION : PM_POST_RESTORE);
atomic_inc(&snapshot_device_available);