3 files changed, 20 insertions, 1 deletions
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index b2e8613a26d8..438770f8867f 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -317,6 +317,7 @@ static void queue_request(struct fuse_conn *fc, struct fuse_req *req)
 	list_add_tail(&req->list, &fc->pending);
 	req->state = FUSE_REQ_PENDING;
 	wake_up(&fc->waitq);
+	kill_fasync(&fc->fasync, SIGIO, POLL_IN);
 }
 
 /*
@@ -901,6 +902,7 @@ void fuse_abort_conn(struct fuse_conn *fc)
 		end_requests(fc, &fc->pending);
 		end_requests(fc, &fc->processing);
 		wake_up_all(&fc->waitq);
+		kill_fasync(&fc->fasync, SIGIO, POLL_IN);
 	}
 	spin_unlock(&fuse_lock);
 }
@@ -917,12 +919,24 @@ static int fuse_dev_release(struct inode *inode, struct file *file)
 		end_requests(fc, &fc->processing);
 	}
 	spin_unlock(&fuse_lock);
-	if (fc)
+	if (fc) {
+		fasync_helper(-1, file, 0, &fc->fasync);
 		kobject_put(&fc->kobj);
+	}
 
 	return 0;
 }
 
+static int fuse_dev_fasync(int fd, struct file *file, int on)
+{
+	struct fuse_conn *fc = fuse_get_conn(file);
+	if (!fc)
+		return -ENODEV;
+
+	/* No locking - fasync_helper does its own locking */
+	return fasync_helper(fd, file, on, &fc->fasync);
+}
+
 const struct file_operations fuse_dev_operations = {
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
@@ -932,6 +946,7 @@ const struct file_operations fuse_dev_operations = {
 	.writev		= fuse_dev_writev,
 	.poll		= fuse_dev_poll,
 	.release	= fuse_dev_release,
+	.fasync		= fuse_dev_fasync,
 };
 
 static struct miscdevice fuse_miscdevice = {
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index a16a04fcf41e..e5cb46b78437 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -318,6 +318,9 @@ struct fuse_conn {
 
 	/** kobject */
 	struct kobject kobj;
+
+	/** O_ASYNC requests */
+	struct fasync_struct *fasync;
 };
 
 static inline struct fuse_conn *get_fuse_conn_super(struct super_block *sb)
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 879e6fba9480..78700cbb9cdf 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -216,6 +216,7 @@ static void fuse_put_super(struct super_block *sb)
 	spin_unlock(&fuse_lock);
 	up_write(&fc->sbput_sem);
 	/* Flush all readers on this fs */
+	kill_fasync(&fc->fasync, SIGIO, POLL_IN);
 	wake_up_all(&fc->waitq);
 	kobject_del(&fc->kobj);
 	kobject_put(&fc->kobj);