Messages in this thread | | | Date | Thu, 16 Jun 2022 09:38:44 -1000 | From | Tejun Heo <> | Subject | Re: [PATCH cgroup/for-5.19-fixes] cgroup: Use separate src/dst nodes when preloading css_sets for migration |
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On Mon, Jun 13, 2022 at 12:19:50PM -1000, Tejun Heo wrote: > Each cset (css_set) is pinned by its tasks. When we're moving tasks around > across csets for a migration, we need to hold the source and destination > csets to ensure that they don't go away while we're moving tasks about. This > is done by linking cset->mg_preload_node on either the > mgctx->preloaded_dst_csets or mgctx->preloaded_dst_csets list. Using the > same cset->mg_preload_node for both the src and dst lists was deemed okay as > a cset can't be both the source and destination at the same time.
Applied to cgroup/for-5.19-fixes w/ patch description fixed.
Thanks.
-- tejun
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