On 30.10.22 22:41, Peter Xu wrote:
PTE markers are ideal mechanism for things like SWP_SWAPIN_ERROR. Using a whole swap entry type for this purpose can be an overkill, especially if we already have PTE markers. Define a new bit for swapin error and replace it with pte markers. Then we can safely drop SWP_SWAPIN_ERROR and give one device slot back to swap. We used to have SWP_SWAPIN_ERROR taking the page pfn as part of the swap entry, but it's never used. Neither do I see how it can be useful because normally the swapin failure should not be caused by a bad page but bad swap device. Drop it alongside. Reviewed-by: Huang Ying <ying.huang@xxxxxxxxx> Reviewed-by: Miaohe Lin <linmiaohe@xxxxxxxxxx> Signed-off-by: Peter Xu <peterx@xxxxxxxxxx> ---
Acked-by: David Hildenbrand <david@xxxxxxxxxx> -- Thanks, David / dhildenb
