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splice: export do_tee() 

export do_tee() for use in io_uring

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2020-05-17 14:18:05 +03:00 committed by Jens Axboe
parent c11368a57b
commit 9dafdfc2f0
2 changed files with 4 additions and 2 deletions
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3
fs/splice.c
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@ -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);

3
include/linux/splice.h
View File

@ -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
*/