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SubjectRe: [PATCH v1 1/2] zsmalloc: zs_object_copy: add clarifying comment
On (22/08/11 18:37), Alexey Romanov wrote:
> @@ -1564,6 +1564,12 @@ static void zs_object_copy(struct size_class *class, unsigned long dst,
> d_off += size;
> d_size -= size;
>
> + /* Calling kunmap_atomic(d_addr) is necessary. kunmap_atomic() calls
> + * must occurs in reverse order of calls to kmap_atomic().
> + * So, to call kunmap_atomic(s_addr) we should first call kunmap_atomic(d_addr).
> + * For more details see:
> + * https://lore.kernel.org/linux-mm/5512421D.4000603@samsung.com/
> + */

I'd drop the link part, Emails are not documentation, kmap_atomic
is documented in Documentation/mm/highmem

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