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560fd93bca
struct dn_route is inserted into dn_rt_hash_table but no dst->__refcnt is taken. This patch makes sure the dn_rt_hash_table's reference to the dst is ref counted. As the dst is always ref counted properly, we can safely mark DST_NOGC flag so dst_release() will release dst based on refcnt only. And dst gc is no longer needed and all dst_free() or its related function calls should be replaced with dst_release() or dst_release_immediate(). And dst_dev_put() is called when removing dst from the hash table to release the reference on dst->dev before we lose pointer to it. Also, correct the logic in dn_dst_check_expire() and dn_dst_gc() to check dst->__refcnt to be > 1 to indicate it is referenced by other users. Signed-off-by: Wei Wang <weiwan@google.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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|---|---|---|
| .. | ||
| netfilter | ||
| af_decnet.c | ||
| dn_dev.c | ||
| dn_fib.c | ||
| dn_neigh.c | ||
| dn_nsp_in.c | ||
| dn_nsp_out.c | ||
| dn_route.c | ||
| dn_rules.c | ||
| dn_table.c | ||
| dn_timer.c | ||
| Kconfig | ||
| Makefile | ||
| README | ||
| sysctl_net_decnet.c | ||
| TODO | ||
Linux DECnet Project
======================
The documentation for this kernel subsystem is available in the
Documentation/networking subdirectory of this distribution and also
on line at http://www.chygwyn.com/DECnet/
Steve Whitehouse <SteveW@ACM.org>