[PATCH v2 7/7] pipe: set FMODE_NOWAIT for named FIFOs
From: Askar Safin <hidden>
Date: 2026-06-25 08:37:40
Also in:
fuse-devel, linux-fsdevel, linux-mm, linux-patches, lkml, netdev
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
CRIU relies on ability to do vmsplice(SPLICE_F_NONBLOCK) on named FIFOs. Signed-off-by: Askar Safin <redacted> --- fs/pipe.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/fs/pipe.c b/fs/pipe.c
index c0ccf21b9..a8e9b4459 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c@@ -1156,6 +1156,12 @@ static int fifo_open(struct inode *inode, struct file *filp) /* We can only do regular read/write on fifos */ stream_open(inode, filp); + /* + * CRIU relies on ability to do vmsplice(SPLICE_F_NONBLOCK) + * on named FIFOs. + */ + filp->f_mode |= FMODE_NOWAIT; + switch (filp->f_mode & (FMODE_READ | FMODE_WRITE)) { case FMODE_READ: /*
--
2.47.3