diff options
Diffstat (limited to 'net/unix/garbage.c')
| -rw-r--r-- | net/unix/garbage.c | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/net/unix/garbage.c b/net/unix/garbage.c index 6d4a9a8de5e..19c17e4a0c8 100644 --- a/net/unix/garbage.c +++ b/net/unix/garbage.c @@ -80,6 +80,7 @@ #include <linux/file.h> #include <linux/proc_fs.h> #include <linux/mutex.h> +#include <linux/wait.h> #include <net/sock.h> #include <net/af_unix.h> @@ -91,6 +92,7 @@ static LIST_HEAD(gc_inflight_list); static LIST_HEAD(gc_candidates); static DEFINE_SPINLOCK(unix_gc_lock); +static DECLARE_WAIT_QUEUE_HEAD(unix_gc_wait); unsigned int unix_tot_inflight; @@ -104,8 +106,8 @@ static struct sock *unix_get_socket(struct file *filp) * Socket ? */ if (S_ISSOCK(inode->i_mode)) { - struct socket * sock = SOCKET_I(inode); - struct sock * s = sock->sk; + struct socket *sock = SOCKET_I(inode); + struct sock *s = sock->sk; /* * PF_UNIX ? @@ -124,7 +126,7 @@ static struct sock *unix_get_socket(struct file *filp) void unix_inflight(struct file *fp) { struct sock *s = unix_get_socket(fp); - if(s) { + if (s) { struct unix_sock *u = unix_sk(s); spin_lock(&unix_gc_lock); if (atomic_long_inc_return(&u->inflight) == 1) { @@ -141,7 +143,7 @@ void unix_inflight(struct file *fp) void unix_notinflight(struct file *fp) { struct sock *s = unix_get_socket(fp); - if(s) { + if (s) { struct unix_sock *u = unix_sk(s); spin_lock(&unix_gc_lock); BUG_ON(list_empty(&u->link)); @@ -154,7 +156,7 @@ void unix_notinflight(struct file *fp) static inline struct sk_buff *sock_queue_head(struct sock *sk) { - return (struct sk_buff *) &sk->sk_receive_queue; + return (struct sk_buff *)&sk->sk_receive_queue; } #define receive_queue_for_each_skb(sk, next, skb) \ @@ -266,12 +268,16 @@ static void inc_inflight_move_tail(struct unix_sock *u) list_move_tail(&u->link, &gc_candidates); } -/* The external entry point: unix_gc() */ +static bool gc_in_progress = false; -void unix_gc(void) +void wait_for_unix_gc(void) { - static bool gc_in_progress = false; + wait_event(unix_gc_wait, gc_in_progress == false); +} +/* The external entry point: unix_gc() */ +void unix_gc(void) +{ struct unix_sock *u; struct unix_sock *next; struct sk_buff_head hitlist; @@ -364,7 +370,7 @@ void unix_gc(void) */ skb_queue_head_init(&hitlist); list_for_each_entry(u, &gc_candidates, link) - scan_children(&u->sk, inc_inflight, &hitlist); + scan_children(&u->sk, inc_inflight, &hitlist); spin_unlock(&unix_gc_lock); @@ -376,6 +382,7 @@ void unix_gc(void) /* All candidates should have been detached by now. */ BUG_ON(!list_empty(&gc_candidates)); gc_in_progress = false; + wake_up(&unix_gc_wait); out: spin_unlock(&unix_gc_lock); |