[jdk26] RFR: 8374743: G1 starts a concurrent mark when allocating humongous objects during initialization

[Thomas Schatzl]

On Mon, 12 Jan 2026 08:40:30 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

> Hi all,
> 
>   This pull request contains a backport of commit [fb13abef](https://github.com/openjdk/jdk/commit/fb13abef44d535ebc4535921fd4eb0f285030465) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
> 
>   The commit being backported was authored by Thomas Schatzl on 12 Jan 2026 and was reviewed by Erik Österlund, Ivan Walulya, Stefan Johansson and Aleksey Shipilev.
> 
> Thanks!

The linux_x64 gha build error is due to running out of disk space.

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PR Comment: https://git.openjdk.org/jdk/pull/29160#issuecomment-3737574467