[26/71] PM / Hibernate: Make snapshot_release() restore GFP mask

From: Greg KH
Date: Thu May 19 2011 - 14:20:40 EST

2.6.38-stable review patch. If anyone has any objections, please let us know.


From: Rafael J. Wysocki <rjw@xxxxxxx>

commit 9744997a8a2280e67984d4bffd87221d24f3b6b1 upstream.

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@xxxxxxxxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

kernel/power/user.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

--- a/kernel/power/user.c
+++ b/kernel/power/user.c
@@ -135,8 +135,10 @@ static int snapshot_release(struct inode
data = filp->private_data;
- if (data->frozen)
+ if (data->frozen) {
+ pm_restore_gfp_mask();
+ }
pm_notifier_call_chain(data->mode == O_RDONLY ?

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