Re: [PATCH v2 4/5] mm/swap: remove confusing checking for non_swap_entry() in swap_ra_info()

On 2021/4/19 9:53, Huang, Ying wrote: > Miaohe Lin writes: > >> While we released the pte lock, somebody else might faulted in this pte. >> So we should check whether it's swap pte first to guard against such race >> or swp_type would be unexpected. But the swap_entry isn't used in this >>

Re: [PATCH v2 4/5] mm/swap: remove confusing checking for non_swap_entry() in swap_ra_info()

Miaohe Lin writes: > While we released the pte lock, somebody else might faulted in this pte. > So we should check whether it's swap pte first to guard against such race > or swp_type would be unexpected. But the swap_entry isn't used in this > function and we will have enough checking when we

[PATCH v2 4/5] mm/swap: remove confusing checking for non_swap_entry() in swap_ra_info()

While we released the pte lock, somebody else might faulted in this pte. So we should check whether it's swap pte first to guard against such race or swp_type would be unexpected. But the swap_entry isn't used in this function and we will have enough checking when we really operate the PTE entries