RFR: 8355681: G1HeapRegionManager::find_contiguous_allow_expand ignores free regions when checking regions available for allocation

Tue Apr 29 07:33:46 UTC 2025

On Mon, 28 Apr 2025 10:57:48 GMT, Ivan Walulya <iwalulya at openjdk.org> wrote:

> Hi,
> 
> Please review this change to account for free regions when checking if we have enough regions to satisfy an allocation request. Currently, we have that a `_hrm.expand_and_allocate_humongous` call fails where an `expand_and_allocate` call succeeds for the same allocation request. 
> 
> Testing: Tier 1-3

Marked as reviewed by tschatzl (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/24915#pullrequestreview-2802356207