linux-kernel - [PATCH 02/15] fs: add a write stream field to the kiocb

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20241119121632.1225556-3-hch@lst.de>
Date: Tue, 19 Nov 2024 13:16:16 +0100
From: Christoph Hellwig <hch@....de>
To: Jens Axboe <axboe@...nel.dk>
Cc: Christian Brauner <brauner@...nel.org>,
	Keith Busch <kbusch@...nel.org>,
	Sagi Grimberg <sagi@...mberg.me>,
	Kanchan Joshi <joshi.k@...sung.com>,
	Hui Qi <hui81.qi@...sung.com>,
	Nitesh Shetty <nj.shetty@...sung.com>,
	Jan Kara <jack@...e.cz>,
	Pavel Begunkov <asml.silence@...il.com>,
	linux-block@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-nvme@...ts.infradead.org,
	linux-fsdevel@...r.kernel.org,
	io-uring@...r.kernel.org
Subject: [PATCH 02/15] fs: add a write stream field to the kiocb

Prepare for io_uring passthrough of write streams.

The write stream field in the kiocb structure fits into an existing
2-byte hole, so its size is not changed.

Based on a patch from Keith Busch <kbusch@...nel.org>

Signed-off-by: Christoph Hellwig <hch@....de>
---
 include/linux/fs.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 4b5cad44a126..1997be247b6c 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -370,6 +370,7 @@ struct kiocb {
 	void			*private;
 	int			ki_flags;
 	u16			ki_ioprio; /* See linux/ioprio.h */
+	u8			ki_write_stream;
 	union {
 		/*
 		 * Only used for async buffered reads, where it denotes the
-- 
2.45.2