neighbour: Remove lock dance for neigh_update_{gc,managed}_list().

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__neigh_update() could call neigh_update_gc_list() and
neigh_update_managed_list().

Both of them acquire neigh->tbl->lock and neigh->lock, check
neigh->dead, perform link operations, and release the locks.

Let's remove the lock dance.

Note that neigh->dead is always marked under neigh->tbl->lock.

Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260902203722.926528-4-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

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Kuniyuki Iwashima 2026-09-02 20:36:44 +00:00 • committed by Jakub Kicinski

parent 985f6522d8

commit 2f9ab22897

1 changed files with 19 additions and 20 deletions

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net/core/neighbour.c

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