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| /openbmc/qemu/hw/9pfs/ |
| H A D | 9p.c | 18adde86 Tue Apr 04 11:06:01 CDT 2017 Greg Kurz <groug@kaod.org> 9pfs: fix multiple flush for same request
If a client tries to flush the same outstanding request several times, only
the first flush completes. Subsequent ones keep waiting for the request
completion in v9fs_flush() and, therefore, leak a PDU. This will cause QEMU
to hang when draining active PDUs the next time the device is reset.
Let have each flush request wake up the next one if any. The last waiter
frees the cancelled PDU.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
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