3f3e4f3c74
The ref_count counter is global (i.e. not per-vnet) so we can't use a per-vnet lock to protect it. Moreover, in callouts curvnet is not set, so we'd end up panicing when trying to use DN_BH_WLOCK(). Instead we use the global sched_lock, which is already used when evaluating ref_count (in unload_dn_aqm()). Sponsored by: Rubicon Communications, LLC ("Netgate") Differential Revision: https://reviews.freebsd.org/D34059 |
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pf |