[GIT PULL] iomap: fixes for 5.5

[Darrick J. Wong]

Hi Linus,

Please pull these iomap bug fixes for 5.5-rc1, which fix a race
condition and a use-after-free error.

The branch has survived overnight xfstests runs and merges cleanly with
this morning's master.  Please let me know if anything strange happens.

--D

The following changes since commit 88cfd30e188fcf6fd8304586c936a6f22fb665e5:

  iomap: remove unneeded variable in iomap_dio_rw() (2019-11-26 09:28:47 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git tags/iomap-5.5-merge-14

for you to fetch changes up to c275779ff2dd51c96eaae04fac5d766421d6c596:

  iomap: stop using ioend after it's been freed in iomap_finish_ioend() (2019-12-05 07:41:16 -0800)

----------------------------------------------------------------
Fixes for 5.5-rc1:
- Fix a UAF when reporting writeback errors
- Fix a race condition when handling page uptodate on a blocksize <
  pagesize file that is also fragmented

----------------------------------------------------------------
Christoph Hellwig (1):
      iomap: fix sub-page uptodate handling

Zorro Lang (1):
      iomap: stop using ioend after it's been freed in iomap_finish_ioend()

 fs/iomap/buffered-io.c | 40 ++++++++++++++++++++++++++++------------
 1 file changed, 28 insertions(+), 12 deletions(-)