splice: only check do_wakeup in splice_to_pipe() for a real pipe
We only ever set do_wakeup to non-zero if the pipe has an inode
backing, so it's pointless to check outside the pipe->inode
check.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/fs/splice.c b/fs/splice.c
index 186fad4..e7d7080 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -245,14 +245,15 @@
pipe->waiting_writers--;
}
- if (pipe->inode)
+ if (pipe->inode) {
mutex_unlock(&pipe->inode->i_mutex);
- if (do_wakeup) {
- smp_mb();
- if (waitqueue_active(&pipe->wait))
- wake_up_interruptible(&pipe->wait);
- kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN);
+ if (do_wakeup) {
+ smp_mb();
+ if (waitqueue_active(&pipe->wait))
+ wake_up_interruptible(&pipe->wait);
+ kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN);
+ }
}
while (page_nr < spd_pages)