Re: [PATCH v4] mm: cma: support sysfs
From: Dmitry Osipenko
Date: Fri Mar 19 2021 - 13:42:28 EST
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?