Introduce a helper mempool_is_saturated(), which tells if the mempool is
under-filled or not. We need it to figure out whether it should be
freed right into the mempool or could be cached with top level caches.
Cc: <stable@xxxxxxxxxxxxxxx> # 5.15+
Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
---
include/linux/mempool.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/linux/mempool.h b/include/linux/mempool.h
index 0c964ac107c2..4aae6c06c5f2 100644
--- a/include/linux/mempool.h
+++ b/include/linux/mempool.h
@@ -30,6 +30,11 @@ static inline bool mempool_initialized(mempool_t *pool)
return pool->elements != NULL;
}
+static inline bool mempool_is_saturated(mempool_t *pool)
+{
+ return READ_ONCE(pool->curr_nr) >= pool->min_nr;
+}
+
void mempool_exit(mempool_t *pool);
int mempool_init_node(mempool_t *pool, int min_nr, mempool_alloc_t *alloc_fn,
mempool_free_t *free_fn, void *pool_data,
--
2.38.0
