Merge tag 'vfs-6.7.iov_iter' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs

Pull iov_iter updates from Christian Brauner:
 "This contain's David's iov_iter cleanup work to convert the iov_iter
  iteration macros to inline functions:

   - Remove last_offset from iov_iter as it was only used by ITER_PIPE

   - Add a __user tag on copy_mc_to_user()'s dst argument on x86 to
     match that on powerpc and get rid of a sparse warning

   - Convert iter->user_backed to user_backed_iter() in the sound PCM
     driver

   - Convert iter->user_backed to user_backed_iter() in a couple of
     infiniband drivers

   - Renumber the type enum so that the ITER_* constants match the order
     in iterate_and_advance*()

   - Since the preceding patch puts UBUF and IOVEC at 0 and 1, change
     user_backed_iter() to just use the type value and get rid of the
     extra flag

   - Convert the iov_iter iteration macros to always-inline functions to
     make the code easier to follow. It uses function pointers, but they
     get optimised away

   - Move the check for ->copy_mc to _copy_from_iter() and
     copy_page_from_iter_atomic() rather than in memcpy_from_iter_mc()
     where it gets repeated for every segment. Instead, we check once
     and invoke a side function that can use iterate_bvec() rather than
     iterate_and_advance() and supply a different step function

   - Move the copy-and-csum code to net/ where it can be in proximity
     with the code that uses it

   - Fold memcpy_and_csum() in to its two users

   - Move csum_and_copy_from_iter_full() out of line and merge in
     csum_and_copy_from_iter() since the former is the only caller of
     the latter

   - Move hash_and_copy_to_iter() to net/ where it can be with its only
     caller"

* tag 'vfs-6.7.iov_iter' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs:
  iov_iter, net: Move hash_and_copy_to_iter() to net/
  iov_iter, net: Merge csum_and_copy_from_iter{,_full}() together
  iov_iter, net: Fold in csum_and_memcpy()
  iov_iter, net: Move csum_and_copy_to/from_iter() to net/
  iov_iter: Don't deal with iter->copy_mc in memcpy_from_iter_mc()
  iov_iter: Convert iterate*() to inline funcs
  iov_iter: Derive user-backedness from the iterator type
  iov_iter: Renumber ITER_* constants
  infiniband: Use user_backed_iter() to see if iterator is UBUF/IOVEC
  sound: Fix snd_pcm_readv()/writev() to use iov access functions
  iov_iter, x86: Be consistent about the __user tag on copy_mc_to_user()
  iov_iter: Remove last_offset from iov_iter as it was for ITER_PIPE

diff --cc include/linux/skbuff.h
Simple merge