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'access_memory' is an artificial memory access generator program that is used for a few DAMON selftests. It accesses a given number of regions one by one only once, and exits. Depending on systems, the test workload may exit faster than expected, making the tests unreliable. For reliable control of the artificial memory access pattern, add a mode to make it repeat running. Link: https://lkml.kernel.org/r/20260117020731.226785-4-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>