tree 57245239564583e968e4e8fb94d493bde69fb18b
parent 4740a623d20c51d167da7f752b63e2b8714b2543
author Sage Weil <sage@inktank.com> 1343697585 -0700
committer Sage Weil <sage@inktank.com> 1343697585 -0700

libceph: recheck con state after allocating incoming message

We drop the lock when calling the ->alloc_msg() con op, which means
we need to (a) not clobber con->in_msg without the mutex held, and (b)
we need to verify that we are still in the OPEN state when we retake
it to avoid causing any mayhem.  If the state does change, -EAGAIN
will get us back to con_work() and loop.

Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>