writeback error handling fixes (pile #1)

[Jeff Layton <jlayton@redhat.com>]

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The following changes since commit c86daad2c25bfd4a33d48b7691afaa96d9c5ab46:

  Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input (2017-05-26 16:45:13 -0700)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git tags/for-linus-v4.13-1

for you to fetch changes up to 0f41074a65757b46acbdd4293f0de8a70b147406:

  fs: remove call_fsync helper function (2017-07-05 18:44:23 -0400)

----------------------------------------------------------------
The main rationale for all of these changes is to tighten up writeback
error reporting to userland. There are many ways now that writeback
errors can be lost, such that fsync/fdatasync/msync return 0 when
writeback actually failed.

This pile contains a small set of cleanups and writeback error handling
fixes that I was able to break off from the main pile (#2).

Two of the patches in this pile are trivial. The exceptions are the
patch to fix up error handling in write_one_page, and the patch to make
JFS pay attention to write_one_page errors.

Side note: I'm not going to send a PR for the remaining locking
patches. Al picked up most of the file locking / fcntl patches from my
series in one of his PRs, so all that's left is the l_pid rework from
Ben. I think it's reasonable to give those a full cycle to soak in -next
as they came in rather late in this cycle anyway.
----------------------------------------------------------------
Dave Kleikamp (1):
      JFS: do not ignore return code from write_one_page()

Jeff Layton (3):
      mm: drop "wait" parameter from write_one_page()
      mm: clean up error handling in write_one_page
      fs: remove call_fsync helper function

 fs/exofs/dir.c        |  2 +-
 fs/ext2/dir.c         |  2 +-
 fs/jfs/jfs_metapage.c |  7 +++++--
 fs/jfs/jfs_metapage.h |  1 +
 fs/minix/dir.c        |  2 +-
 fs/sync.c             |  2 +-
 fs/sysv/dir.c         |  2 +-
 fs/ufs/dir.c          |  2 +-
 include/linux/fs.h    |  6 ------
 include/linux/mm.h    |  2 +-
 ipc/shm.c             |  2 +-
 mm/page-writeback.c   | 19 +++++++++----------
 12 files changed, 23 insertions(+), 26 deletions(-)
-- 
Jeff Layton <jlayton@redhat.com>

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