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Subject[PATCH 0/2] Track reserve map changes to restore on error
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Here is a modification to the reservation tracking for fixup on errors.
It is a more general change, but should work for the hugetlb_mcopy_pte_atomic
case as well.

Perhaps use this as a prerequisite for your fix(es)? Pretty sure this
will eliminate the need for the call to hugetlb_unreserve_pages.

Mike Kravetz (2):
hugetlb: rename HPageRestoreReserve flag to HPageRestoreRsvCnt
hugetlb: add new hugetlb specific flag HPG_restore_rsv_map

fs/hugetlbfs/inode.c | 3 +-
include/linux/hugetlb.h | 17 +++++--
mm/hugetlb.c | 108 ++++++++++++++++++++++++++++------------
mm/userfaultfd.c | 14 +++---
4 files changed, 99 insertions(+), 43 deletions(-)

--
2.31.1

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