• Tejun Heo's avatar
    freezer: clean up freeze_processes() failure path · 03afed8b
    Tejun Heo authored
    freeze_processes() failure path is rather messy.  Freezing is canceled
    for workqueues and tasks which aren't frozen yet but frozen tasks are
    left alone and should be thawed by the caller and of course some
    callers (xen and kexec) didn't do it.
    This patch updates __thaw_task() to handle cancelation correctly and
    makes freeze_processes() and freeze_kernel_threads() call
    thaw_processes() on failure instead so that the system is fully thawed
    on failure.  Unnecessary [suspend_]thaw_processes() calls are removed
    from kernel/power/hibernate.c, suspend.c and user.c.
    While at it, restructure error checking if clause in suspend_prepare()
    to be less weird.
    -v2: Srivatsa spotted missing removal of suspend_thaw_processes() in
         suspend_prepare() and error in commit message.  Updated.
    Signed-off-by: default avatarTejun Heo <tj@kernel.org>
    Acked-by: default avatarSrivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
freezer.c 4 KB