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CVS commit: src/sys/arch/xen/xen

Module Name:    src
Committed By:   bouyer
Date:           Sat Dec  3 22:36:29 UTC 2011

Modified Files:
        src/sys/arch/xen/xen: xbdback_xenbus.c

Log Message:
xbdback_disconnect() can be called twice,  from XenbusStateClosing then from
xbdback_xenbus_destroy(). The second call will wait forever as the first
already caused the xbd thread to exit.
Have xbdback_disconnect() check if we're already disconnected and if so,
do nothing.

To generate a diff of this commit:
cvs rdiff -u -r1.53 -r1.54 src/sys/arch/xen/xen/xbdback_xenbus.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

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