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Hugh Dickins authored
try_to_unmap always fails on a page found in a VM_LOCKED vma (unless migrating), and recycles it back to the active list. But if it's an anonymous page, we've already allocated swap to it: just wasting swap. Spot locked pages in page_referenced_one and treat them as referenced. Signed-off-by:
Hugh Dickins <hugh@veritas.com> Tested-by:
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Ethan Solomita <solo@google.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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