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splice: make do_splice public 

Make do_splice(), so other kernel parts can reuse it

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2020-02-24 11:32:43 +03:00 committed by Jens Axboe
parent bcaec089c5
commit 444ebb5768
2 changed files with 6 additions and 3 deletions
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6
fs/splice.c
View File

@ -1109,9 +1109,9 @@ static int splice_pipe_to_pipe(struct pipe_inode_info *ipipe,
/* /*
* Determine where to splice to/from. * Determine where to splice to/from.
*/ */
static long do_splice(struct file *in, loff_t __user *off_in, long do_splice(struct file *in, loff_t __user *off_in,
struct file *out, loff_t __user *off_out, struct file *out, loff_t __user *off_out,
size_t len, unsigned int flags) size_t len, unsigned int flags)
{ {
struct pipe_inode_info *ipipe; struct pipe_inode_info *ipipe;
struct pipe_inode_info *opipe; struct pipe_inode_info *opipe;

3
include/linux/splice.h
View File

@ -78,6 +78,9 @@ extern ssize_t add_to_pipe(struct pipe_inode_info *,
struct pipe_buffer *); struct pipe_buffer *);
extern ssize_t splice_direct_to_actor(struct file *, struct splice_desc *, extern ssize_t splice_direct_to_actor(struct file *, struct splice_desc *,
splice_direct_actor *); splice_direct_actor *);
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);
/* /*
* for dynamic pipe sizing * for dynamic pipe sizing