On Fri, 21 Apr 2017 20:47:39 +0800 "Huang, Ying" <ying.hu...@intel.com> wrote:
> From: Huang Ying <ying.hu...@intel.com> > > In swapcache_free_entries(), if swap_info_get_cont() return NULL, > something wrong occurs for the swap entry. But we should still > continue to free the following swap entries in the array instead of > skip them to avoid swap space leak. This is just problem in error > path, where system may be in an inconsistent state, but it is still > good to fix it. > > ... > > --- a/mm/swapfile.c > +++ b/mm/swapfile.c > @@ -1079,8 +1079,6 @@ void swapcache_free_entries(swp_entry_t *entries, int n) > p = swap_info_get_cont(entries[i], prev); > if (p) > swap_entry_free(p, entries[i]); > - else > - break; > prev = p; So now prev==NULL. Will this code get the locking correct in swap_info_get_cont()? I think so, but please double-check. > } > if (p)
