[PATCH v2 0/5] clean up and generalize swap-over-NFS

[Omar Sandoval <osandov@osandov.com>]

Hi,

This patch series (based on ecb5ec0 in Linus' tree) contains all of the
non-BTRFS work that I've done to implement swapfiles on BTRFS. The BTRFS
portion is still undergoing development and is now outweighed by the
non-BTRFS changes, so I want to get these in separately.

Version 2 changes the generic swapfile interface to use ->read_iter and
->write_iter instead of using ->direct_IO directly in response to
discussion on the previous submission. It also adds the iov_iter_is_bvec
helper to factor out some common checks.

Version 1 can be found here: https://lkml.org/lkml/2014/12/15/7

Omar Sandoval (5):
  iov_iter: add ITER_BVEC helpers
  direct-io: don't dirty ITER_BVEC pages on read
  nfs: don't dirty ITER_BVEC pages read through direct I/O
  swapfile: use ->read_iter and ->write_iter
  vfs: update swap_{,de}activate documentation

 Documentation/filesystems/Locking |  7 ++++---
 Documentation/filesystems/vfs.txt |  7 ++++---
 fs/direct-io.c                    |  8 ++++---
 fs/nfs/direct.c                   |  5 ++++-
 fs/splice.c                       |  7 ++-----
 include/linux/uio.h               |  7 +++++++
 mm/iov_iter.c                     | 12 +++++++++++
 mm/page_io.c                      | 44 +++++++++++++++++++++++++--------------
 mm/swapfile.c                     | 11 +++++++++-
 9 files changed, 76 insertions(+), 32 deletions(-)

-- 
2.2.1