[GIT PULL] iomap: more fixes for v5.0

[Darrick J. Wong]

Hi Linus,

Here are a couple of iomap fixes to eliminate some memory corruption
and hang problems that were reported.

--D

The following changes since commit 1c7fc5cbc33980acd13d668f1c8f0313d6ae9fd8:

  Linux 5.0-rc2 (2019-01-14 10:41:12 +1200)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git tags/iomap-5.0-fixes-1

for you to fetch changes up to 4ea899ead2786a30aaa8181fefa81a3df4ad28f6:

  iomap: fix a use after free in iomap_dio_rw (2019-01-27 08:47:42 -0800)

----------------------------------------------------------------
Changes since last update:
- fix page migration when using iomap for pagecache management
- fix a use-after-free bug in the directio code

----------------------------------------------------------------
Christoph Hellwig (1):
      iomap: fix a use after free in iomap_dio_rw

Piotr Jaroszynski (1):
      iomap: get/put the page in iomap_page_create/release()

 fs/iomap.c | 37 ++++++++++++++++++++++++++++++-------
 1 file changed, 30 insertions(+), 7 deletions(-)