[4.4.y 4.9.y 0/1] ext4 CVE fixes for 4.9 and 4.4

[Chenbo Feng <fengc@xxxxxxxxxx>]

This patch is aimed to fixing CVE-2018-10883 and is already in 4.14
stable. The upstream one has minor conflicts when backporting to 4.4
and 4.9 but it is trivial to resolve. I have tested the patch with
xfstests on kvm and there is no regression.

Theodore Ts'o (1):
  ext4: avoid running out of journal credits when appending to an inline
    file

 fs/ext4/ext4.h   |  3 ---
 fs/ext4/inline.c | 38 +-------------------------------------
 fs/ext4/xattr.c  | 18 ++----------------
 3 files changed, 3 insertions(+), 56 deletions(-)

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2.19.0.605.g01d371f741-goog