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由 Dan Williams 提交于
There is a small window whereby ARS scan requests can schedule work that userspace will miss when polling scrub_show. Hold the init_mutex lock over calls to report the status to close this potential escape. Also, make sure that requests to cancel the ARS workqueue are treated as an idle event. Cc: <stable@vger.kernel.org> Cc: Vishal Verma <vishal.l.verma@intel.com> Fixes: 37b137ff ("nfit, libnvdimm: allow an ARS scrub...") Reviewed-by: NDave Jiang <dave.jiang@intel.com> Signed-off-by: NDan Williams <dan.j.williams@intel.com>
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