From af185d8c76333daa877678e0166a7b45e63bf3c4 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 20 Jun 2022 03:05:09 -0700 Subject: raw: complete rcu conversion raw_diag_dump() can use rcu_read_lock() instead of read_lock() Now the hashinfo lock is only used from process context, in write mode only, we can convert it to a spinlock, and we do not need to block BH anymore. Signed-off-by: Eric Dumazet Link: https://lore.kernel.org/r/20220620100509.3493504-1-eric.dumazet@gmail.com Signed-off-by: Paolo Abeni --- net/ipv4/raw_diag.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'net/ipv4/raw_diag.c') diff --git a/net/ipv4/raw_diag.c b/net/ipv4/raw_diag.c index ac4b6525d3c6..999321834b94 100644 --- a/net/ipv4/raw_diag.c +++ b/net/ipv4/raw_diag.c @@ -156,7 +156,7 @@ static void raw_diag_dump(struct sk_buff *skb, struct netlink_callback *cb, s_slot = cb->args[0]; num = s_num = cb->args[1]; - read_lock(&hashinfo->lock); + rcu_read_lock(); for (slot = s_slot; slot < RAW_HTABLE_SIZE; s_num = 0, slot++) { num = 0; @@ -184,7 +184,7 @@ next: } out_unlock: - read_unlock(&hashinfo->lock); + rcu_read_unlock(); cb->args[0] = slot; cb->args[1] = num; -- cgit v1.2.3