Messages in this thread | | | Date | Thu, 3 Aug 2023 15:01:00 +0300 | From | "Kirill A. Shutemov" <> | Subject | Re: [PATCH v4 0/3] Optimize large folio interaction with deferred split |
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On Wed, Aug 02, 2023 at 05:42:23PM +0100, Ryan Roberts wrote: > - avoid the split lock contention by using mmu gather (suggested by Kirill)
[Offlist]
So, my idea is to embed struct deferred_split into struct mmu_gather and make zap path to use it instead of per-node/per-memcg deferred_split. This would avoid lock contention. If the list is not empty after zap, move the to the per-node/per-memcg deferred_split.
But it is only relevant if we see lock contention.
-- Kiryl Shutsemau / Kirill A. Shutemov
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