freebsd-nq/sys/ufs
Konstantin Belousov aca4bb9112 Do not leak mount references for dying threads.
Thread might create a condition for delayed SU cleanup, which creates
a reference to the mount point in td_su, but exit without returning
through userret(), e.g. when terminating due to single-threading or
process exit.  In this case, td_su reference is not dropped and mount
point cannot be freed.

Handle the situation by clearing td_su also in the thread destructor
and in exit1().  softdep_ast_cleanup() has to receive the thread as
argument, since e.g. thread destructor is executed in different
context.

Reported and tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2017-02-25 10:38:18 +00:00
..
ffs Do not leak mount references for dying threads. 2017-02-25 10:38:18 +00:00
ufs prefix UFS symbols with UFS_ to reduce namespace pollution 2017-02-15 19:50:26 +00:00