v.25.12Improvement

Fix spurious memory limit errors

Fixed spurious memory limit errors when userspace page cache is enabled. #91361 (Michael Kolupaev).
Fixed spurious memory limit errors occurring when userspace page cache is enabled.

Why it matters

This fix addresses incorrect memory limit errors that were reported erroneously when the userspace page cache feature was active, improving stability and reliability of memory management in ClickHouse.

How to use it

The fix is applied automatically in the new version; users who have enabled userspace page cache do not need to change their configuration to benefit from this improvement.