be16e10a6f
We are now out of aflags bits, whereas the "flags" field only makes use of five of its sixteen bits, so narrow "flags" to eight bits. I have no intention of adding a new aflag in the near future, but would like to combine the aflags, queue and act_count fields into a single atomically updated word. This will allow vm_page_pqstate_cmpset() to become much simpler and is a step towards eliminating the use of the page lock array in updating per-page queue state. The change modifies the layout of struct vm_page, so bump __FreeBSD_version. Reviewed by: alc, dougm, jeff, kib Sponsored by: Netflix, Intel Differential Revision: https://reviews.freebsd.org/D22397
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