(please ignore my [PATCH 2/5]; this is just a resend of the same thing, with a
proper subject)
This simple patch puts two fixes into the blktap backend. The first is a change
of busid from an unsigned short to a u32 so we can accommodate the new expanded
format (which doesn''t fit into 16-bits). The second is a minor fix to
signal_tapdisk(); while developing, if the tools happen to set up the tapfds
wrong, you can get into a situation where the idx passed to signal_tapdisk() is
NULL, causing a kernel OOPS. The fix for signal_tapdisk() just returns if the
idx is negative, preventing the crash.
Signed-off-by: Chris Lalancette <clalance@redhat.com>
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