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Subject[PATCH 0/2] A couple hugetlbfs fixes
Date
I stumbled on these two hugetlbfs issues while looking at other things:
- The 'restore reserve' functionality at page free time should not
be adjusting subpool counts.
- A BUG can be triggered (not easily) due to temporarily mapping a
page before doing a COW.

Both are described in detail in the commit message of the patches.
I would appreciate comments from Davidlohr Bueso as one patch is
directly related to code he added in commit 8382d914ebf7.

I did not cc stable as the first problem has been around since reserves
were added to hugetlbfs and nobody has noticed. The second is very hard
to hit/reproduce.

Mike Kravetz (2):
huegtlbfs: on restore reserve error path retain subpool reservation
hugetlb: use same fault hash key for shared and private mappings

mm/hugetlb.c | 30 ++++++++++++++++++------------
1 file changed, 18 insertions(+), 12 deletions(-)

--
2.17.2

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