linux-kernel - [PATCH v2 1/2] splice: export do

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Message-Id: <250f722c275e2251b06f8cb8a049fa1cd3bd0921.1589714180.git.asml.silence@gmail.com>
Date:   Sun, 17 May 2020 14:18:05 +0300
From:   Pavel Begunkov <asml.silence@...il.com>
To:     Jens Axboe <axboe@...nel.dk>, io-uring@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/2] splice: export do_tee()

export do_tee() for use in io_uring

Signed-off-by: Pavel Begunkov <asml.silence@...il.com>
---
 fs/splice.c            | 3 +--
 include/linux/splice.h | 3 +++
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/fs/splice.c b/fs/splice.c
index fd0a1e7e5959..a1dd54de24d8 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -1754,8 +1754,7 @@ static int link_pipe(struct pipe_inode_info *ipipe,
  * The 'flags' used are the SPLICE_F_* variants, currently the only
  * applicable one is SPLICE_F_NONBLOCK.
  */
-static long do_tee(struct file *in, struct file *out, size_t len,
-		   unsigned int flags)
+long do_tee(struct file *in, struct file *out, size_t len, unsigned int flags)
 {
 	struct pipe_inode_info *ipipe = get_pipe_info(in);
 	struct pipe_inode_info *opipe = get_pipe_info(out);
diff --git a/include/linux/splice.h b/include/linux/splice.h
index ebbbfea48aa0..5c47013f708e 100644
--- a/include/linux/splice.h
+++ b/include/linux/splice.h
@@ -82,6 +82,9 @@ extern long do_splice(struct file *in, loff_t __user *off_in,
 		      struct file *out, loff_t __user *off_out,
 		      size_t len, unsigned int flags);
 
+extern long do_tee(struct file *in, struct file *out, size_t len,
+		   unsigned int flags);
+
 /*
  * for dynamic pipe sizing
  */
-- 
2.24.0