Merge branch 'work.splice_read' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull VFS splice updates from Al Viro:
 "There's a bunch of branches this cycle, both mine and from other folks
  and I'd rather send pull requests separately.

  This one is the conversion of ->splice_read() to ITER_PIPE iov_iter
  (and introduction of such). Gets rid of a lot of code in fs/splice.c
  and elsewhere; there will be followups, but these are for the next
  cycle...  Some pipe/splice-related cleanups from Miklos in the same
  branch as well"

* 'work.splice_read' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  pipe: fix comment in pipe_buf_operations
  pipe: add pipe_buf_steal() helper
  pipe: add pipe_buf_confirm() helper
  pipe: add pipe_buf_release() helper
  pipe: add pipe_buf_get() helper
  relay: simplify relay_file_read()
  switch default_file_splice_read() to use of pipe-backed iov_iter
  switch generic_file_splice_read() to use of ->read_iter()
  new iov_iter flavour: pipe-backed
  fuse_dev_splice_read(): switch to add_to_pipe()
  skb_splice_bits(): get rid of callback
  new helper: add_to_pipe()
  splice: lift pipe_lock out of splice_to_pipe()
  splice: switch get_iovec_page_array() to iov_iter
  splice_to_pipe(): don't open-code wakeup_pipe_readers()
  consistent treatment of EFAULT on O_DIRECT read/write

1 files changed, 1 insertions, 15 deletions

diff --git a/net/kcm/kcmsock.c b/net/kcm/kcmsock.c
index b7f869a85ab7..7e08a4d3d77d 100644
--- a/net/kcm/kcmsock.c
+++ b/net/kcm/kcmsock.c
@@ -1160,19 +1160,6 @@ out:
 	return copied ? : err;
 }
 
-static ssize_t kcm_sock_splice(struct sock *sk,
-			       struct pipe_inode_info *pipe,
-			       struct splice_pipe_desc *spd)
-{
-	int ret;
-
-	release_sock(sk);
-	ret = splice_to_pipe(pipe, spd);
-	lock_sock(sk);
-
-	return ret;
-}
-
 static ssize_t kcm_splice_read(struct socket *sock, loff_t *ppos,
 			       struct pipe_inode_info *pipe, size_t len,
 			       unsigned int flags)
@@ -1202,8 +1189,7 @@ static ssize_t kcm_splice_read(struct socket *sock, loff_t *ppos,
 	if (len > rxm->full_len)
 		len = rxm->full_len;
 
-	copied = skb_splice_bits(skb, sk, rxm->offset, pipe, len, flags,
-				 kcm_sock_splice);
+	copied = skb_splice_bits(skb, sk, rxm->offset, pipe, len, flags);
 	if (copied < 0) {
 		err = copied;
 		goto err_out;