On Sun, Mar 12, 2023 at 12:05:59PM -0700, Joe Stringer wrote:
> +Even if an LRU node may be acquired, maps of type ``BPF_MAP_TYPE_LRU_HASH``
> +may fail to insert the entry into the map if other CPUs are heavily contending
> +on the global hashmap lock.
"Even if an LRU node can be acquired, ..."
> +
> +This algorithm is described visually in the following diagram. See the
> +description in commit 3a08c2fd7634 ("bpf: LRU List") for a full explanation of
> +the corresponding operations:
> +
> +.. kernel-figure:: map_lru_hash_update.dot
> + :alt: Diagram outlining the LRU eviction steps taken during map update
> +
> + LRU hash eviction during map update for ``BPF_MAP_TYPE_LRU_HASH`` and
> + variants
> +
> <snipped> ...
> +The dot file source for the above figure uses internal kernel function names
> +for the node names in order to make the corresponding logic easier to find.
Shouldn't the figure note above be in :alt:?
Otherwise LGTM.
--
An old man doll... just what I always wanted! - Clara
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