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(parent: b9c03b7) | patch
ipmr: convert mrt_lock to a spinlock
authorEric Dumazet <edumazet@google.com>
Thu, 23 Jun 2022 04:34:48 +0000 (04:34 +0000)
committerDavid S. Miller <davem@davemloft.net>
Fri, 24 Jun 2022 10:34:38 +0000 (11:34 +0100)
commited0ea0b5dbd4a32687d8cb6f265fe14b7e87a91b
tree6779414584f1dd5651d0c3a4b596a163aae3595ftree | snapshot
parentb9c03b74ab2a1796bede2efdf3e3a32adfedc8accommit | diff
ipmr: convert mrt_lock to a spinlock

mrt_lock is only held in write mode, from process context only.

We can switch to a mere spinlock, and avoid blocking BH.

Also, vif_dev_read() is always called under standard rcu_read_lock().

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/ipmr.c diff | blob | history
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