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-rw-r--r--net/socket.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/net/socket.c b/net/socket.c
index 35dd7371752a..0f75746ab06e 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -1030,6 +1030,13 @@ static int sock_fasync(int fd, struct file *filp, int on)
lock_sock(sk);
+ spin_lock(&filp->f_lock);
+ if (on)
+ filp->f_flags |= FASYNC;
+ else
+ filp->f_flags &= ~FASYNC;
+ spin_unlock(&filp->f_lock);
+
prev = &(sock->fasync_list);
for (fa = *prev; fa != NULL; prev = &fa->fa_next, fa = *prev)