runtime.heapArena.pageInUse (field)

5 uses

	runtime (current package)
		mheap.go#L277: 	pageInUse [pagesPerArena / 8]uint8
		mheap.go#L746: 	pageIdx = ((p / pageSize) / 8) % uintptr(len(arena.pageInUse))
		mheap.go#L884: 		inUse := ha.pageInUse[arenaPage/8:]
		mheap.go#L1449: 		atomic.Or8(&arena.pageInUse[pageIdx], pageMask)
		mheap.go#L1611: 		atomic.And8(&arena.pageInUse[pageIdx], ^pageMask)

The pages are generated with Golds v0.6.7. (GOOS=linux GOARCH=amd64)
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