if !c.state.update(&state, state.setLocked()) {
				continue
			}
			debugPrintf("releaseReader %s: last reader, need ptr\n", c.name)
			c.releaseLock(state)
			return
		}

		// Release reader.
		if !c.state.update(&state, state.decReader()) {
			continue
		}
		debugPrintf("releaseReader %s: released (%d readers now)\n", c.name, state.readers())
		return
	}
}

				// Get released stats.
				releasedBg := mheap_.pages.scav.releasedBg.Load()
				releasedEager := mheap_.pages.scav.releasedEager.Load()

				// Print the line.
				printScavTrace(releasedBg, releasedEager, false)

				// Update the stats.
				mheap_.pages.scav.releasedBg.Add(-releasedBg)
				mheap_.pages.scav.releasedEager.Add(-releasedEager)
				unlock(&mheap_.lock)
			})
		}
		scavenger.ready()
	}

		index scavengeIndex

		// releasedBg is the amount of memory released in the background this
		// scavenge cycle.
		releasedBg atomic.Uintptr

		// releasedEager is the amount of memory released eagerly this scavenge
		// cycle.
		releasedEager atomic.Uintptr
	}

	// mheap_.lock. This level of indirection makes it possible
	// to test pageAlloc independently of the runtime allocator.
	mheapLock *mutex

// application.
//
// scavenger.lock must be held.
func printScavTrace(releasedBg, releasedEager uintptr, forced bool) {
	assertLockHeld(&scavenger.lock)

	printlock()
	print("scav ",
		releasedBg>>10, " KiB work (bg), ",
		releasedEager>>10, " KiB work (eager), ",
		gcController.heapReleased.load()>>10, " KiB now, ",
		(gcController.heapInUse.load()*100)/heapRetained(), "% util",

		// Scavenge, but back out if the limiter turns on.
		released := h.pages.scavenge(bytesToScavenge, func() bool {
			return gcCPULimiter.limiting()
		}, forceScavenge)

		mheap_.pages.scav.releasedEager.Add(released)

		// Finish up accounting.
		now = nanotime()
		if track {
			pp.limiterEvent.stop(limiterEventScavengeAssist, now)
		}
		scavenge.assistTime.Add(now - start)
	}