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Commit 9744997a authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

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: default avatarAlexandre Felipe Muller de Souza <alexandrefm@mandriva.com.br>
Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
Cc: stable@kernel.org
parent 87186475

kernel/power/user.c

+3 −1
Original line number Diff line number Diff line
@@ -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);