005783a0a6
OBJ_ONEMAPPING flag is set. In other words, allow recycling of existing but unused subranges of a vm object when the OBJ_ONEMAPPING flag is set. Such situations are increasingly common with jemalloc >= 5.0. This change has the expected effect of reducing the number of vm map entry and object allocations and increasing the number of superpage promotions. Reviewed by: kib, markj Tested by: pho MFC after: 6 weeks Differential Revision: https://reviews.freebsd.org/D16501
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