diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 4aba4c86c626c8509eb62ccf92bf196843878995..fab6d486cbb77aacc732a8b2ae326cfbe3cd12ea 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -110,6 +110,11 @@ struct vm_area_struct;
  * the caller guarantees the allocation will allow more memory to be freed
  * very shortly e.g. process exiting or swapping. Users either should
  * be the MM or co-ordinating closely with the VM (e.g. swap over NFS).
+ * Users of this flag have to be extremely careful to not deplete the reserve
+ * completely and implement a throttling mechanism which controls the
+ * consumption of the reserve based on the amount of freed memory.
+ * Usage of a pre-allocated pool (e.g. mempool) should be always considered
+ * before using this flag.
  *
  * %__GFP_NOMEMALLOC is used to explicitly forbid access to emergency reserves.
  * This takes precedence over the %__GFP_MEMALLOC flag if both are set.