[GIT PULL] dax fix for 4.21

["Williams, Dan J" <dan.j.williams@intel.com>]

Hi Linus, please pull from:

  git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm tags/dax-fix-4.21

...to receive a single fix for an issue you identified on the last dax
fix pull request. While I feel a bit silly sending a single-commit
pull-request there is nothing else queued up for dax this cycle. This
change has shipped in -next for multiple releases.

---

The following changes since commit 7566ec393f4161572ba6f11ad5171fd5d59b0fbd:

  Linux 4.20-rc7 (2018-12-16 15:46:55 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm tags/dax-fix-4.21

for you to fetch changes up to d8a706414af4827fc0b4b1c0c631c607351938b9:

  dax: Use non-exclusive wait in wait_entry_unlocked() (2018-12-21 11:35:53 -0800)

----------------------------------------------------------------
dax fix 4.21

* Clean up unnecessary usage of prepare_to_wait_exclusive()

----------------------------------------------------------------
Dan Williams (1):
      dax: Use non-exclusive wait in wait_entry_unlocked()

 fs/dax.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)