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

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(-)