On Thu, Jan 10, 2019 at 02:07:14PM -0800, Suren Baghdasaryan wrote: > From: Johannes Weiner <hannes@xxxxxxxxxxx> > > Kernfs has a standardized poll/notification mechanism for waking all > pollers on all fds when a filesystem node changes. To allow polling > for custom events, add a .poll callback that can override the default. > > This is in preparation for pollable cgroup pressure files which have > per-fd trigger configurations. > > Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx> > Signed-off-by: Suren Baghdasaryan <surenb@xxxxxxxxxx> Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
