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v6.1 mm backport - Maple Tree VMA Iterator

Chris von Recklinghausen requested to merge crecklin/centos-stream-9:v6.1-mm into main

JIRA: https://issues.redhat.com/browse/RHEL-27736

Please note that follow up fixes will be provided in a separate MR.

Omitted fix:
	3dd443254941 ("mm: enable maple tree RCU mode by default")
Omitted-fix:
	dd34d9fe3b42 ("mm: fix unaccount of memory on vma_link() failure")
Omitted-fix:
	824135c46b00 ("mmap: fix error paths with dup_anon_vma()")
Omitted-fix:
	82b249361f2d ("mm/mmap: fix comment of unmapped_area{_topdown}")
Omitted-fix:
	58c5d0d6d522 ("mm/mmap: regression fix for unmapped_area{_topdown}")
Omitted-fix:
	675eaca1f441 ("mm/mmap: properly unaccount memory on mas_preallocate() failure")
Omitted-fix:
	e0f81ab1e4f4 ("mm: fix vm_brk_flags() to not bail out while holding lock")
Omitted-fix:
	65ac132027a8 ("userfaultfd: fix regression in userfaultfd_unmap_prep()")
Omitted-fix:
	6db504ce55bd ("mm/ksm: fix race with VMA iteration and mm_struct teardown")
Omitted-fix:
	f4e9e0e69468 ("mm/mempolicy: fix use-after-free of VMA iterator")
Omitted-fix:
	00ca0f2e86bf ("mm/mempolicy: correctly update prev when policy is equal on mbind")
Omitted-fix:
	51f625377561 ("mm/mempolicy: fix set_mempolicy_home_node() previous VMA pointe")
Omitted-fix:
	7f31cced5724 ("nommu: fix memory leak in do_mmap() error path")
Omitted-fix:
	80be727ec872 ("nommu: fix do_munmap() error path")
Omitted-fix:
	fd9edbdbdcde ("nommu: fix split_vma() map_count error")
Omitted-fix:
	606c812eb1d5 ("mm/mmap: Fix error path in do_vmi_align_munmap()")
Omitted-fix:
	6c26bd4384da ("mm/mmap: Fix error return in do_vmi_align_munmap()")
Omitted-fix:
	675eaca1f441 ("mm/mmap: properly unaccount memory on mas_preallocate() failure")
Omitted-fix:
	0411d6ee50e3 ("include/linux/mm: fix release_pages_arg kernel doc comment")

Signed-off-by: Chris von Recklinghausen crecklin@redhat.com

Edited by Jarod Wilson

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