[GIT PULL] xfs: more fixes for 4.17-rc4

[Darrick J. Wong]

Hi Linus,

I've got one more bug fix for xfs for 4.17-rc4, which caps the amount of
data we try to handle in one dedupe request so that userspace can't
livelock the kernel.

This series has been run through a full xfstests run during the week and
through a quick xfstests run against this morning's master, with no ajor
failures reported.  Let me know if there are any merge problems.

--D

The following changes since commit 7b38460dc8e4eafba06c78f8e37099d3b34d473c:

  xfs: don't fail when converting shortform attr to long form during ATTR_REPLACE (2018-04-17 19:10:15 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git tags/xfs-4.17-fixes-2

for you to fetch changes up to 021ba8e98fe5c6691b3cc3669faafa02403aa211:

  xfs: cap the length of deduplication requests (2018-05-02 09:21:33 -0700)

----------------------------------------------------------------
Changes since last update:
- Cap the maximum length of a deduplication request at MAX_RW_COUNT/2
  to avoid kernel livelock due to excessively large IO requests.

----------------------------------------------------------------
Darrick J. Wong (1):
      xfs: cap the length of deduplication requests

 fs/xfs/xfs_file.c | 10 ++++++++++
 1 file changed, 10 insertions(+)