netdev - [PATCH 05/11] vfs: add file_pos_unlock() for io

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Date: Sun, 27 Aug 2023 21:28:29 +0800
From: Hao Xu <hao.xu@...ux.dev>
To: io-uring@...r.kernel.org,
	Jens Axboe <axboe@...nel.dk>
Cc: Dominique Martinet <asmadeus@...ewreck.org>,
	Pavel Begunkov <asml.silence@...il.com>,
	Christian Brauner <brauner@...nel.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Stefan Roesch <shr@...com>,
	Clay Harris <bugs@...ycon.org>,
	Dave Chinner <david@...morbit.com>,
	"Darrick J . Wong" <djwong@...nel.org>,
	linux-fsdevel@...r.kernel.org,
	linux-xfs@...r.kernel.org,
	linux-ext4@...r.kernel.org,
	linux-cachefs@...hat.com,
	ecryptfs@...r.kernel.org,
	linux-nfs@...r.kernel.org,
	linux-unionfs@...r.kernel.org,
	bpf@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-s390@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-block@...r.kernel.org,
	linux-btrfs@...r.kernel.org,
	codalist@...a.cs.cmu.edu,
	linux-f2fs-devel@...ts.sourceforge.net,
	cluster-devel@...hat.com,
	linux-mm@...ck.org,
	linux-nilfs@...r.kernel.org,
	devel@...ts.orangefs.org,
	linux-cifs@...r.kernel.org,
	samba-technical@...ts.samba.org,
	linux-mtd@...ts.infradead.org,
	Wanpeng Li <wanpengli@...cent.com>
Subject: [PATCH 05/11] vfs: add file_pos_unlock() for io_uring usage

From: Hao Xu <howeyxu@...cent.com>

Add a helper to unlock f_pos_lock without any condition. Introduce this
since io_uring handles f_pos_lock not with a fd struct, thus
FDPUT_POS_UNLOCK isn't used.

Signed-off-by: Hao Xu <howeyxu@...cent.com>
---
 include/linux/file.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/file.h b/include/linux/file.h
index bcc6ba0aec50..a179f4794341 100644
--- a/include/linux/file.h
+++ b/include/linux/file.h
@@ -81,6 +81,11 @@ static inline void fdput_pos(struct fd f)
 	fdput(f);
 }
 
+static inline void file_pos_unlock(struct file *file)
+{
+	__f_unlock_pos(file);
+}
+
 extern int file_pos_lock_nowait(struct file *file, bool nowait);
 
 DEFINE_CLASS(fd, struct fd, fdput(_T), fdget(fd), int fd)
-- 
2.25.1