On Tue, 6 Feb 2024 10:27:31 +0530 Anshuman Khandual <anshuman.khandual@xxxxxxx> wrote: > This adds the following new sysfs file tracking the number of successfully > released pages from a given CMA heap area. Also like before - this will be > available via CONFIG_CMA_SYSFS, and help in determining active CMA pages > available on the system. "like before" is mysterious. Is this referring to some other patch? To existing code? Please be explicit and complete. > /sys/kernel/mm/cma/<cma-heap-area>/release_pages_success > > It adds an element 'nr_pages_released' (with CONFIG_CMA_SYSFS config) into > 'struct cma' which gets updated during cma_release(). The changelog doesn't explain why Linux needs this feature. The value to our users. Perhaps that info is buried in the link which is buried below the ^---$, but as this is the most important part of a changelog, it really should be spelled out here, completely and carefully please. > --- > This patch applies on v6.8-rc3 > > Some earlier relevant discussions regarding arm64 MTE dynamic tag storage > in this regard can be found here. > > https://lore.kernel.org/all/ZbpKyNVHfhf1-AAv@raptor/
