add more lifecycle

1 files changed, 6 insertions, 1 deletions

diff --git a/docs/application/buffer.md b/docs/application/buffer.md
index ea30458..92de6ae 100644
--- a/docs/application/buffer.md
+++ b/docs/application/buffer.md
@@ -7,10 +7,15 @@
 ```c
 typedef struct _kpl_buffer {
     KPL_ALLOC_HEADER(struct _kpl_buffer);
-    size_t byte_length;
+    size_t byte_length : KPL_ALLOC_POOL_SIZE;
+    int32_t io_register_index : KPL_ALLOC_WEIGHT;
     kpl_interface *interface;
     uint8_t bytes[];
 } kpl_buffer;
 ```
 
+## Io uring buffer register
+
+### Set `io_register_index` to -1 of not used
+
 ## Unicode Methods