20 Feb
2025
20 Feb
'25
11:32 p.m.
On Thu, Feb 20, 2025 at 10:21:01PM +1300, Barry Song wrote:
- src_anon_vma and its lock – swapcache doesn’t require it（folio is not mapped）
Could you help explain what guarantees the rmap walk not happen on a swapcache page?
I'm not familiar with this path, though at least I see damon can start a rmap walk on PageAnon almost with no locking.. some explanations would be appreciated.
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Peter Xu