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-rw-r--r--mm/mempool.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/mempool.c b/mm/mempool.c
index 0ef8cc8d1602..85efab3da720 100644
--- a/mm/mempool.c
+++ b/mm/mempool.c
@@ -222,6 +222,8 @@ EXPORT_SYMBOL(mempool_init_node);
*
* Like mempool_create(), but initializes the pool in (i.e. embedded in another
* structure).
+ *
+ * Return: %0 on success, negative error code otherwise.
*/
int mempool_init(mempool_t *pool, int min_nr, mempool_alloc_t *alloc_fn,
mempool_free_t *free_fn, void *pool_data)
@@ -245,6 +247,8 @@ EXPORT_SYMBOL(mempool_init);
* functions. This function might sleep. Both the alloc_fn() and the free_fn()
* functions might sleep - as long as the mempool_alloc() function is not called
* from IRQ contexts.
+ *
+ * Return: pointer to the created memory pool object or %NULL on error.
*/
mempool_t *mempool_create(int min_nr, mempool_alloc_t *alloc_fn,
mempool_free_t *free_fn, void *pool_data)
@@ -289,6 +293,8 @@ EXPORT_SYMBOL(mempool_create_node);
* Note, the caller must guarantee that no mempool_destroy is called
* while this function is running. mempool_alloc() & mempool_free()
* might be called (eg. from IRQ contexts) while this function executes.
+ *
+ * Return: %0 on success, negative error code otherwise.
*/
int mempool_resize(mempool_t *pool, int new_min_nr)
{
@@ -363,6 +369,8 @@ EXPORT_SYMBOL(mempool_resize);
* *never* fails when called from process contexts. (it might
* fail if called from an IRQ context.)
* Note: using __GFP_ZERO is not supported.
+ *
+ * Return: pointer to the allocated element or %NULL on error.
*/
void *mempool_alloc(mempool_t *pool, gfp_t gfp_mask)
{