From: Jens Axboe <axboe@kernel.dk>
Date: Wed, 8 Mar 2023 00:56:28 +0000 (-0700)
Subject: pipe: set FMODE_NOWAIT on pipes
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=refs%2Fheads%2Fpipe-nonblock;p=linux-2.6-block.git

pipe: set FMODE_NOWAIT on pipes

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@redhat.com>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

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: