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for the bio for swapout write. It allows the page allocator to drain free page list deeper. As result, a deadlock where pageout deamon sleeps waiting for bio to be allocated for swapout is no more reproducable in practice. Alan said that M_USE_RESERVE shall be ressurrected and used there, but until this is implemented, M_NOWAIT does exactly what is needed. Tested by: pho, kris Reviewed by: alc No objections from: phk MFC after: 2 weeks (RELENG_7 only)