Re: [PATCH v4] mm: cma: support sysfs

Dmitry Osipenko
2021-03-19T17:42:29Z

19.03.2021 20:29, Dmitry Osipenko пишет:
> +void cma_sysfs_alloc_pages_count(struct cma *cma, size_t count)
> +{
> + atomic64_add(count, &cma->nr_pages_succeeded);
> +}
> +
> +void cma_sysfs_fail_pages_count(struct cma *cma, size_t count)
> +{
> + atomic64_add(count, &cma->nr_pages_failed);
> +}

The atomic looks good, but aren't CMA allocations already protected by
the CMA core? Do we really need to worry about racing here?