diff --git a/grpc.def b/grpc.def
index 5b2b679708a..5ef59ab9561 100644
--- a/grpc.def
+++ b/grpc.def
@@ -177,7 +177,9 @@ EXPORTS
     grpc_slice_buffer_move_into
     grpc_slice_buffer_trim_end
     grpc_slice_buffer_move_first
+    grpc_slice_buffer_move_first_into_buffer
     grpc_slice_buffer_take_first
+    grpc_slice_buffer_undo_take_first
     gpr_malloc
     gpr_free
     gpr_realloc
diff --git a/src/core/lib/slice/slice_buffer.c b/src/core/lib/slice/slice_buffer.c
index 84fa89684f0..b1bf0ceb230 100644
--- a/src/core/lib/slice/slice_buffer.c
+++ b/src/core/lib/slice/slice_buffer.c
@@ -51,7 +51,7 @@ static void maybe_embiggen(grpc_slice_buffer *sb) {
     sb->slices = sb->base_slices;
   }
 
-  /* How many far away from sb->base_slices is sb->slices pointer */
+  /* How far away from sb->base_slices is sb->slices pointer */
   size_t slice_offset = (size_t)(sb->slices - sb->base_slices);
   size_t slice_count = sb->count + slice_offset;
 
@@ -168,7 +168,6 @@ void grpc_slice_buffer_addn(grpc_slice_buffer *sb, grpc_slice *s, size_t n) {
   }
 }
 
-/* TODO (sreek) - Check where this is used and if this is still safe */
 void grpc_slice_buffer_pop(grpc_slice_buffer *sb) {
   if (sb->count != 0) {
     size_t count = --sb->count;
diff --git a/src/ruby/ext/grpc/rb_grpc_imports.generated.c b/src/ruby/ext/grpc/rb_grpc_imports.generated.c
index 230682e72d9..d8d76cc1c53 100644
--- a/src/ruby/ext/grpc/rb_grpc_imports.generated.c
+++ b/src/ruby/ext/grpc/rb_grpc_imports.generated.c
@@ -215,7 +215,9 @@ grpc_slice_buffer_swap_type grpc_slice_buffer_swap_import;
 grpc_slice_buffer_move_into_type grpc_slice_buffer_move_into_import;
 grpc_slice_buffer_trim_end_type grpc_slice_buffer_trim_end_import;
 grpc_slice_buffer_move_first_type grpc_slice_buffer_move_first_import;
+grpc_slice_buffer_move_first_into_buffer_type grpc_slice_buffer_move_first_into_buffer_import;
 grpc_slice_buffer_take_first_type grpc_slice_buffer_take_first_import;
+grpc_slice_buffer_undo_take_first_type grpc_slice_buffer_undo_take_first_import;
 gpr_malloc_type gpr_malloc_import;
 gpr_free_type gpr_free_import;
 gpr_realloc_type gpr_realloc_import;
@@ -504,7 +506,9 @@ void grpc_rb_load_imports(HMODULE library) {
   grpc_slice_buffer_move_into_import = (grpc_slice_buffer_move_into_type) GetProcAddress(library, "grpc_slice_buffer_move_into");
   grpc_slice_buffer_trim_end_import = (grpc_slice_buffer_trim_end_type) GetProcAddress(library, "grpc_slice_buffer_trim_end");
   grpc_slice_buffer_move_first_import = (grpc_slice_buffer_move_first_type) GetProcAddress(library, "grpc_slice_buffer_move_first");
+  grpc_slice_buffer_move_first_into_buffer_import = (grpc_slice_buffer_move_first_into_buffer_type) GetProcAddress(library, "grpc_slice_buffer_move_first_into_buffer");
   grpc_slice_buffer_take_first_import = (grpc_slice_buffer_take_first_type) GetProcAddress(library, "grpc_slice_buffer_take_first");
+  grpc_slice_buffer_undo_take_first_import = (grpc_slice_buffer_undo_take_first_type) GetProcAddress(library, "grpc_slice_buffer_undo_take_first");
   gpr_malloc_import = (gpr_malloc_type) GetProcAddress(library, "gpr_malloc");
   gpr_free_import = (gpr_free_type) GetProcAddress(library, "gpr_free");
   gpr_realloc_import = (gpr_realloc_type) GetProcAddress(library, "gpr_realloc");
diff --git a/src/ruby/ext/grpc/rb_grpc_imports.generated.h b/src/ruby/ext/grpc/rb_grpc_imports.generated.h
index 4c4f655b861..7a145be4470 100644
--- a/src/ruby/ext/grpc/rb_grpc_imports.generated.h
+++ b/src/ruby/ext/grpc/rb_grpc_imports.generated.h
@@ -596,9 +596,15 @@ extern grpc_slice_buffer_trim_end_type grpc_slice_buffer_trim_end_import;
 typedef void(*grpc_slice_buffer_move_first_type)(grpc_slice_buffer *src, size_t n, grpc_slice_buffer *dst);
 extern grpc_slice_buffer_move_first_type grpc_slice_buffer_move_first_import;
 #define grpc_slice_buffer_move_first grpc_slice_buffer_move_first_import
+typedef void(*grpc_slice_buffer_move_first_into_buffer_type)(grpc_slice_buffer *src, size_t n, void *dst);
+extern grpc_slice_buffer_move_first_into_buffer_type grpc_slice_buffer_move_first_into_buffer_import;
+#define grpc_slice_buffer_move_first_into_buffer grpc_slice_buffer_move_first_into_buffer_import
 typedef grpc_slice(*grpc_slice_buffer_take_first_type)(grpc_slice_buffer *src);
 extern grpc_slice_buffer_take_first_type grpc_slice_buffer_take_first_import;
 #define grpc_slice_buffer_take_first grpc_slice_buffer_take_first_import
+typedef void(*grpc_slice_buffer_undo_take_first_type)(grpc_slice_buffer *src, grpc_slice slice);
+extern grpc_slice_buffer_undo_take_first_type grpc_slice_buffer_undo_take_first_import;
+#define grpc_slice_buffer_undo_take_first grpc_slice_buffer_undo_take_first_import
 typedef void *(*gpr_malloc_type)(size_t size);
 extern gpr_malloc_type gpr_malloc_import;
 #define gpr_malloc gpr_malloc_import