man/io_uring_clone_buffers: mention that both rings must share mm

In terms of use cases, this is a prerequisite anyway, as the buffers must be accessible on both rings. But it's also important for accounting purposes. Signed-off-by: Jens Axboe <[email protected]>
axboe · Jan 14, 2025 · a5dd7f8 · a5dd7f8
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commit a5dd7f8
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/man/io_uring_clone_buffers.3 b/man/io_uring_clone_buffers.3
@@ -90,6 +90,10 @@ range will be released and replaced.
 
 Available since kernel 6.13.
 
+.SH NOTES
+The source and target ring must shared address spaces, and hence internal
+kernel accounting.
+.SH RETURN VALUE
 On success
 .BR io_uring_clone_buffers (3)
 and