[PATCH 3/3] pipe: set FMODE_NOWAIT on pipes

[Jens Axboe <axboe@xxxxxxxxx>]

The read/write path is now prepared to deal with IOCB_NOWAIT, hence
enable support for that via setting FMODE_NOWAIT on new pipes.

Acked-by: Dave Chinner <dchinner@xxxxxxxxxx>
Reviewed-by: Christian Brauner <brauner@xxxxxxxxxx>
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
---
 fs/pipe.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/pipe.c b/fs/pipe.c
index dc00b20e56c8..b7e380952fca 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -999,6 +999,9 @@ static int __do_pipe_flags(int *fd, struct file **files, int flags)
 	audit_fd_pair(fdr, fdw);
 	fd[0] = fdr;
 	fd[1] = fdw;
+	/* pipe groks IOCB_NOWAIT */
+	files[0]->f_mode |= FMODE_NOWAIT;
+	files[1]->f_mode |= FMODE_NOWAIT;
 	return 0;
 
  err_fdr:
-- 
2.39.2