Integrated: Loan from old should align on region size

[Kelvin Nilsen]

On Wed, 1 Feb 2023 02:57:07 GMT, Kelvin Nilsen <kdnilsen at openjdk.org> wrote:

> This fixes an error detected by a recently added assertion on a different branch.  When loaning memory from old-gen to young-gen, it is important the total amount of the loan be an integral number of ShenandoahHeapRegions.  The total loan represents a sum of memory loaned to support young evacuations and memory loaned to support mutator allocations made while GC is active.  The sum of these two values is a multiple of region size.  The previous version of the code accidentally loaned only the memory dedicated to supporting mutator allocations, which is not necessarily a multiple of the region size.

This pull request has now been integrated.

Changeset: 998ea70c
Author:    Kelvin Nilsen <kdnilsen at openjdk.org>
URL:       https://git.openjdk.org/shenandoah/commit/998ea70c079ac4b2498178aade9d84eb6b2853ea
Stats:     7 lines in 1 file changed: 6 ins; 0 del; 1 mod

Loan from old should align on region size

Reviewed-by: ysr, wkemper

-------------

PR: https://git.openjdk.org/shenandoah/pull/213