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由 Ilya Dryomov 提交于
Need to use WQ_MEM_RECLAIM for our workqueues to prevent I/O lockups under memory pressure - we sit on the memory reclaim path. Cc: stable@vger.kernel.org # 3.17, needs backporting for 3.16 Signed-off-by: NIlya Dryomov <idryomov@redhat.com> Tested-by: NMicha Krause <micha@krausam.de> Reviewed-by: NSage Weil <sage@redhat.com>
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