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[ Upstream commit ff946833b70e0c7f93de9a3f5b329b5ae2287b38 ]
commit 517d7c79bdb398 ("tipc: fix hanging poll() for stream sockets")
introduced a regression for clients using non-blocking sockets.
After the commit, we send EPOLLOUT event to the client even in
TIPC_CONNECTING state. This causes the subsequent send() to fail
with ENOTCONN, as the socket is still not in TIPC_ESTABLISHED state.
In this commit, we:
- improve the fix for hanging poll() by replacing sk_data_ready()
with sk_state_change() to wake up all clients.
- revert the faulty updates introduced by commit 517d7c79bdb398
("tipc: fix hanging poll() for stream sockets").
Fixes: 517d7c79bdb398 ("tipc: fix hanging poll() for stream sockets")
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@gmail.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8cb80eb189