Re: [PATCH v3 18/35] mm: create new codetag references during page splitting
From: Suren Baghdasaryan <surenb@google.com>
Date: 2024-02-16 16:46:59
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cgroups, linux-arch, linux-doc, linux-fsdevel, linux-iommu, linux-mm, lkml
On Fri, Feb 16, 2024 at 6:33 AM Vlastimil Babka [off-list ref] wrote:
On 2/12/24 22:39, Suren Baghdasaryan wrote:quoted
When a high-order page is split into smaller ones, each newly split page should get its codetag. The original codetag is reused for these pages but it's recorded as 0-byte allocation because original codetag already accounts for the original high-order allocated page.Wouldn't it be possible to adjust the original's accounted size and redistribute to the split pages for more accuracy?
I can't recall why I didn't do it that way but I'll try to change and see if something non-obvious comes up. Thanks!