tree 6d8a4f7a72daa12cf4d96c91818c94dd184177ef
parent 73ab9e34ff2f16be887ffbcea3e920336d3553dc
author Laurent Dufour <ldufour@linux.vnet.ibm.com> 1523975598 +0200
committer Suren Baghdasaryan <surenb@google.com> 1611338415 +0000

FROMLIST: mm: cache some VMA fields in the vm_fault structure

When handling speculative page fault, the vma->vm_flags and
vma->vm_page_prot fields are read once the page table lock is released. So
there is no more guarantee that these fields would not change in our back.
They will be saved in the vm_fault structure before the VMA is checked for
changes.

This patch also set the fields in hugetlb_no_page() and
__collapse_huge_page_swapin even if it is not need for the callee.

Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Change-Id: I9821f02ea32ef220b57b8bfd817992bbf71bbb1d
Link: https://lore.kernel.org/lkml/1523975611-15978-13-git-send-email-ldufour@linux.vnet.ibm.com/
Bug: 161210518
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>