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Writing a value to DAMON_RECLAIM's 'enabled' parameter turns on or off DAMON in an ansychronous way. This means the parameter cannot be used to read the current status of DAMON_RECLAIM. 'kdamond_pid' parameter should be used instead for the purpose. The documentation is easy to be read as it works in a synchronous way, so it is a little bit confusing. It also makes the user space tooling dirty. There's no real reason to have the asynchronous behavior, though. Simply make the parameter works synchronously, rather than updating the document. Link: https://lkml.kernel.org/r/20221025173650.90624-4-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>