From: Dave Watson <davejwat...@fb.com> Date: Tue, 1 May 2018 13:05:39 -0700
> It is reported that in some cases, write_space may be called in > do_tcp_sendpages, such that we recursively invoke do_tcp_sendpages again: > > [ 660.468802] ? do_tcp_sendpages+0x8d/0x580 > [ 660.468826] ? tls_push_sg+0x74/0x130 [tls] > [ 660.468852] ? tls_push_record+0x24a/0x390 [tls] > [ 660.468880] ? tls_write_space+0x6a/0x80 [tls] > ... > > tls_push_sg already does a loop over all sending sg's, so ignore > any tls_write_space notifications until we are done sending. > We then have to call the previous write_space to wake up > poll() waiters after we are done with the send loop. > > Reported-by: Andre Tomt <an...@tomt.net> > Signed-off-by: Dave Watson <davejwat...@fb.com> Applied.
