[GIT PULL] dax fix for 4.21

[Williams, Dan J]

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+AF8-entry+AF8-unlocked() (2018-12-21 11:35:53 -0800)

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

+ACo- Clean up unnecessary usage of prepare+AF8-to+AF8-wait+AF8-exclusive()

----------------------------------------------------------------
Dan Williams (1):
      dax: Use non-exclusive wait in wait+AF8-entry+AF8-unlocked()

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