diff options
| author | Kuniyuki Iwashima | 2021-12-08 15:21:58 +0900 |
|---|---|---|
| committer | Jakub Kicinski | 2021-12-10 19:43:00 -0800 |
| commit | 33d60fbd21fa6f71a88571209e301ec6de59f81b (patch) | |
| tree | 3e163274b8b1a636ab4b5aaf05fd0370ea806ff5 | |
| parent | be3158290db8376f49a92d30791dd8899f748aed (diff) | |
sock: Use sock_owned_by_user_nocheck() instead of sk_lock.owned.
This patch moves sock_release_ownership() down in include/net/sock.h and
replaces some sk_lock.owned tests with sock_owned_by_user_nocheck().
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Link: https://lore.kernel.org/r/20211208062158.54132-1-kuniyu@amazon.co.jp
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | include/net/sock.h | 23 | ||||
| -rw-r--r-- | net/core/sock.c | 4 | ||||
| -rw-r--r-- | net/llc/llc_proc.c | 2 |
3 files changed, 15 insertions, 14 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index 5d8532f26208..37f878564d25 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -1635,16 +1635,6 @@ static inline void sk_mem_uncharge(struct sock *sk, int size) __sk_mem_reclaim(sk, SK_RECLAIM_CHUNK); } -static inline void sock_release_ownership(struct sock *sk) -{ - if (sk->sk_lock.owned) { - sk->sk_lock.owned = 0; - - /* The sk_lock has mutex_unlock() semantics: */ - mutex_release(&sk->sk_lock.dep_map, _RET_IP_); - } -} - /* * Macro so as to not evaluate some arguments when * lockdep is not enabled. @@ -1771,12 +1761,23 @@ static inline bool sock_owned_by_user_nocheck(const struct sock *sk) return sk->sk_lock.owned; } +static inline void sock_release_ownership(struct sock *sk) +{ + if (sock_owned_by_user_nocheck(sk)) { + sk->sk_lock.owned = 0; + + /* The sk_lock has mutex_unlock() semantics: */ + mutex_release(&sk->sk_lock.dep_map, _RET_IP_); + } +} + /* no reclassification while locks are held */ static inline bool sock_allow_reclassification(const struct sock *csk) { struct sock *sk = (struct sock *)csk; - return !sk->sk_lock.owned && !spin_is_locked(&sk->sk_lock.slock); + return !sock_owned_by_user_nocheck(sk) && + !spin_is_locked(&sk->sk_lock.slock); } struct sock *sk_alloc(struct net *net, int family, gfp_t priority, diff --git a/net/core/sock.c b/net/core/sock.c index 1a6a92539790..e21485ab285d 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -3292,7 +3292,7 @@ void lock_sock_nested(struct sock *sk, int subclass) might_sleep(); spin_lock_bh(&sk->sk_lock.slock); - if (sk->sk_lock.owned) + if (sock_owned_by_user_nocheck(sk)) __lock_sock(sk); sk->sk_lock.owned = 1; spin_unlock_bh(&sk->sk_lock.slock); @@ -3323,7 +3323,7 @@ bool __lock_sock_fast(struct sock *sk) __acquires(&sk->sk_lock.slock) might_sleep(); spin_lock_bh(&sk->sk_lock.slock); - if (!sk->sk_lock.owned) { + if (!sock_owned_by_user_nocheck(sk)) { /* * Fast path return with bottom halves disabled and * sock::sk_lock.slock held. diff --git a/net/llc/llc_proc.c b/net/llc/llc_proc.c index 0ff490a73fae..07e9abb5978a 100644 --- a/net/llc/llc_proc.c +++ b/net/llc/llc_proc.c @@ -195,7 +195,7 @@ static int llc_seq_core_show(struct seq_file *seq, void *v) timer_pending(&llc->pf_cycle_timer.timer), timer_pending(&llc->rej_sent_timer.timer), timer_pending(&llc->busy_state_timer.timer), - !!sk->sk_backlog.tail, !!sk->sk_lock.owned); + !!sk->sk_backlog.tail, sock_owned_by_user_nocheck(sk)); out: return 0; } |