Reapply "memcg: enable accounting for file lock caches" (!3634) · Merge requests · Red Hat / centos-stream / src / kernel / centos-stream-9

Wander Lairson Costa requested to merge walac/centos-stream-9:RHEL-8487-memcg-flock into main Jan 19, 2024

This reverts commit 3754707bcc3e190e5dadc978d172b61e809cb3bd.

There was a long debate about the performance regression this patch caused. In the artificial performance tests, locking and unlocking the file constantly, upstream saw a 35% regression. However, Performance QE conducted more realistic performance tests with popular databases and Phoronix test suite, and observed no relevant performance impact.

JIRA: https://issues.redhat.com/browse/RHEL-8487

CVE: CVE-2022-0480

Upstream Status: RHEL-only

Signed-off-by: Wander Lairson Costa wander@redhat.com

Edited Jan 19, 2024 by Wander Lairson Costa

Reapply "memcg: enable accounting for file lock caches"

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