[git pull] vfs.git copy_mc_to_iter() backportable fix

[Al Viro]

The following changes since commit b13baccc3850ca8b8cccbf8ed9912dbaa0fdf7f3:

  Linux 5.19-rc2 (2022-06-12 16:11:37 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git tags/pull-fixes

for you to fetch changes up to c3497fd009ef2c59eea60d21c3ac22de3585ed7d:

  fix short copy handling in copy_mc_pipe_to_iter() (2022-06-28 17:37:11 -0400)

----------------------------------------------------------------
backportable fix for copy_to_iter_mc() - the second part of
iov_iter work will pretty much overwrite that one, but it's
much harder to backport.

Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>

----------------------------------------------------------------
Al Viro (1):
      fix short copy handling in copy_mc_pipe_to_iter()

 include/linux/pipe_fs_i.h |  9 +++++++++
 lib/iov_iter.c            | 15 +++++++++++----
 2 files changed, 20 insertions(+), 4 deletions(-)