tree 9802b09cee15c53db368e5351bc0a9055a45433d
parent e157b8fdd412d48eacfbb8c67d3d58780154faa3
author Peter Lieven <pl@kamp.de> 1387038700 +0100
committer Paolo Bonzini <pbonzini@redhat.com> 1387189551 +0100

block/iscsi: use a bh to schedule co reentrance

this fixes a potential segfault and performance regression.

If the coroutine is reentered directly in the iscsi_co_generic_cb
iscsi_process_{read,write} are interrupted and reentered any
time later. One the one hand this could happen after an iscsi_close
where the iscsi context is already gone (segfault). On the
other hand this limits the number of processed callbacks
in each aio_dispatch to one (potential performance regression).

Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Lieven <pl@kamp.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>