db82a1bc12
Currently, we mark a whole span as sysUsed before trimming, but this unnecessarily tells the OS that the trimmed section from the span is used when it may have been scavenged, if s was scavenged. Overall, this just makes invocations of sysUsed a little more fine-grained. It does come with the caveat that now heap_released needs to be managed a little more carefully in allocSpanLocked. In this case, we choose to (like before this change) negate any effect the span has on heap_released before trimming, then add it back if the trimmed part is scavengable. For #14045. Change-Id: Ifa384d989611398bfad3ca39d3bb595a5962a3ea Reviewed-on: https://go-review.googlesource.com/c/140198 Run-TryBot: Michael Knyszek <mknyszek@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com> |
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