Upstream commit 28557cc106e6d2aa8b8c5c7687ea9f8055ff3911
The commit c7f26ccfb2c3 ("mm/vmstat.c: fix vmstat_update() preemption
BUG") does not fix a bug but papers over it. The reported and author
never came back with an explanation nor was the symptom reproduced by
someone else. The commit was reverted upstream but it made its was to
the stable tree therefore I ask there for a revert, too.
Please include this patch in the v4.14 stable tree.
Sebastian
