[PATCH 05/24] man/man7/sock_diag.7: udiag_wqueue: This is memory in use, not memory available

["Günther Noack" <gnoack3000@gmail.com>]

For non-listening sockets, sk_diag_show_rqlen() in linux.git
net/unix/diag.c sets udiag_wqueue to unix_outq_len(), which returns
sk_wmem_alloc_get(): the send-buffer memory currently charged to queued
outgoing data.  The value grows as data is queued; it is not the amount
of space remaining.

Fixes: 4f6a0a4a (2016-12-07; "sock_diag.7: New page documenting NETLINK_SOCK_DIAG interface")
Assisted-by: LLM
Signed-off-by: Günther Noack <gnoack3000@gmail.com>
---

Notes:
    Verified in kernel code; the udiag_wqueue field does indeed have these
    different semantics -- it's the data already sent, which is still
    stuck in the output queue, not the maximum size of the output queue.

 man/man7/sock_diag.7 | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/man/man7/sock_diag.7 b/man/man7/sock_diag.7
index 35a6d5a80ffc..8f8b28b4404d 100644
--- a/man/man7/sock_diag.7
+++ b/man/man7/sock_diag.7
@@ -248,7 +248,9 @@ the backlog size which equals to the value passed as the second argument to
 .BR listen (2).
 .IP
 For established sockets:
-the amount of memory available for sending.
+the amount of memory currently allocated for data
+that was sent on this socket
+but has not yet been received by the peer.
 .RE
 .TP
 .B UDIAG_SHOW_MEMINFO
-- 
2.56.0