5.12-stable patches

5.12-stable patches

added patches:
	mm-futex-fix-shared-futex-pgoff-on-shmem-huge-page.patch
	mm-memory-failure-use-a-mutex-to-avoid-memory_failure-races.patch
	mm-page_vma_mapped_walk-add-a-level-of-indentation.patch
	mm-page_vma_mapped_walk-crossing-page-table-boundary.patch
	mm-page_vma_mapped_walk-get-vma_address_end-earlier.patch
	mm-page_vma_mapped_walk-prettify-pvmw_migration-block.patch
	mm-page_vma_mapped_walk-settle-pagehuge-on-entry.patch
	mm-page_vma_mapped_walk-use-goto-instead-of-while-1.patch
	mm-page_vma_mapped_walk-use-page-for-pvmw-page.patch
	mm-page_vma_mapped_walk-use-pmde-for-pvmw-pmd.patch
	mm-thp-another-pvmw_sync-fix-in-page_vma_mapped_walk.patch
	mm-thp-fix-__split_huge_pmd_locked-on-shmem-migration-entry.patch
	mm-thp-fix-page_address_in_vma-on-file-thp-tails.patch
	mm-thp-fix-page_vma_mapped_walk-if-thp-mapped-by-ptes.patch
	mm-thp-fix-vma_address-if-virtual-address-below-file-offset.patch
	mm-thp-make-is_huge_zero_pmd-safe-and-quicker.patch
	mm-thp-replace-debug_vm-bug-with-vm_warn-when-unmap-fails-for-split.patch
	mm-thp-try_to_unmap-use-ttu_sync-for-safe-splitting.patch
	mm-thp-unmap_mapping_page-to-fix-thp-truncate_cleanup_page.patch
	mm-thp-use-head-page-in-__migration_entry_wait.patch