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Johannes Weiner
dc50537bdd
Cgroup 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. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Johannes Weiner <[email protected]> Signed-off-by: Suren Baghdasaryan <[email protected]> Cc: Dennis Zhou <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Li Zefan <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Tejun Heo <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>