On Sat, Oct 09, 2021 at 12:07:55PM +0200, Peter Zijlstra wrote:

Rafael explained that the reason for having both PF_NOFREEZE and
PF_FREEZER_SKIP is that {,un}lock_system_sleep() is callable from
kthread context that has previously called set_freezable().

In preparation of merging the flags, have {,un}lock_system_slee() save
and restore current->flags.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 drivers/scsi/scsi_transport_spi.c |    7 ++++---
 include/linux/suspend.h           |    8 ++++----
 kernel/power/hibernate.c          |   35 ++++++++++++++++++++++-------------
 kernel/power/main.c               |   16 ++++++++++------
 kernel/power/suspend.c            |   12 ++++++++----
 kernel/power/user.c               |   24 ++++++++++++++----------
 6 files changed, 62 insertions(+), 40 deletions(-)

There's lots of Christmas tree inversion sprinkled in here, but the change
looks good so:

Acked-by: Will Deacon <will@kernel.org>

Will