Lee Jones 9f42f49e70 Revert "Revert "mm/rmap: Fix anon_vma->degree ambiguity leading to double-reuse"" ...

This reverts commit 4f35cec760 and does so
in an abi-safe way.

This is done by adding the new fields only to the end of the structure
and this structure is only passed around to other functions as a
pointer, the internal structure layout is only touched by the core
kernel, so adding it to the end is safe.

Bug: 260678056
Bug: 253167854
Change-Id: Ib1d45625cbc2e0b21330ca3dc2aa7aff34666d31
Signed-off-by: Lee Jones <joneslee@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
(cherry picked from commit 4158b1508f)

2023-05-30 11:42:02 +01:00

71 KiB

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