From: Askar Safin <safinaskar@gmail.com>
To: linux-fsdevel@vger.kernel.org,
Christian Brauner <brauner@kernel.org>,
Alexander Viro <viro@zeniv.linux.org.uk>, Jan Kara <jack@suse.cz>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-api@vger.kernel.org, netdev@vger.kernel.org,
fuse-devel@lists.linux.dev,
Linus Torvalds <torvalds@linux-foundation.org>,
Matthew Wilcox <willy@infradead.org>,
Jens Axboe <axboe@kernel.dk>,
Christoph Hellwig <hch@infradead.org>,
David Howells <dhowells@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@kernel.org>,
Pedro Falcato <pfalcato@suse.de>,
Miklos Szeredi <miklos@szeredi.hu>,
Andy Lutomirski <luto@amacapital.net>,
Collin Funk <collin.funk1@gmail.com>,
David Laight <david.laight.linux@gmail.com>,
Stefan Metzmacher <metze@samba.org>,
The 8472 <kernel@infinite-source.de>, Willy Tarreau <w@1wt.eu>,
Joanne Koong <joannelkoong@gmail.com>,
Val Packett <val@packett.cool>, Andrei Vagin <avagin@gmail.com>,
patches@lists.linux.dev
Subject: [PATCH v2 7/7] pipe: set FMODE_NOWAIT for named FIFOs
Date: Thu, 25 Jun 2026 08:34:09 +0000 [thread overview]
Message-ID: <20260625083409.3769242-8-safinaskar@gmail.com> (raw)
In-Reply-To: <20260625083409.3769242-1-safinaskar@gmail.com>
CRIU relies on ability to do vmsplice(SPLICE_F_NONBLOCK) on named FIFOs.
Signed-off-by: Askar Safin <safinaskar@gmail.com>
---
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
next prev parent reply other threads:[~2026-06-25 8:37 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-25 8:34 [PATCH v2 0/7] vmsplice: fix some problems in my previous vmsplice patchset Askar Safin
2026-06-25 8:34 ` [PATCH v2 1/7] vmsplice: open-code do_writev and do_readv Askar Safin
2026-06-25 8:34 ` [PATCH v2 2/7] vmsplice: change argument type back to "int" Askar Safin
2026-06-25 8:34 ` [PATCH v2 3/7] splice: turn wait_for_space flags argument into bool Askar Safin
2026-06-25 8:34 ` [PATCH v2 4/7] pipe: move wait_for_space to fs/pipe.c and rename it Askar Safin
2026-06-25 8:34 ` [PATCH v2 5/7] vmsplice: make sure we don't wait after writing some data Askar Safin
2026-06-25 8:34 ` [PATCH v2 6/7] vmsplice: return -EINVAL for particular combination of flags Askar Safin
2026-06-25 8:34 ` Askar Safin [this message]
2026-06-25 8:46 ` [PATCH v2 0/7] vmsplice: fix some problems in my previous vmsplice patchset David Hildenbrand (Arm)
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