[PATCH 06/29] vfs: add file_pos_unlock() for io_uring usage

Hao Xu
2023-08-25T13:58:38Z

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@tencent.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