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-rw-r--r--Documentation/block/biovecs.rst2
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/block/biovecs.rst b/Documentation/block/biovecs.rst
index 36771a131b56..ddb867e0185b 100644
--- a/Documentation/block/biovecs.rst
+++ b/Documentation/block/biovecs.rst
@@ -40,6 +40,8 @@ normal code doesn't have to deal with bi_bvec_done.
There is a lower level advance function - bvec_iter_advance() - which takes
a pointer to a biovec, not a bio; this is used by the bio integrity code.
+As of 5.12 bvec segments with zero bv_len are not supported.
+
What's all this get us?
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