On Mon, 2020-09-14 at 17:50 +0100, Matthew Wilcox wrote: > On Mon, Sep 14, 2020 at 12:17:07PM -0400, Qian Cai wrote: > > Reverting the "Return head pages from find_*_entry" patchset [1] up to this > > patch fixed the issue that LTP madvise06 test [2] would trigger endless > > soft- > > lockups below. It does not help after applied patches fixed other separate > > issues in the patchset [3][4]. > > Thanks for the report. Could you try this? It works fine. > > diff --git a/mm/madvise.c b/mm/madvise.c > index 96189acd6969..2d9ceccb338d 100644 > --- a/mm/madvise.c > +++ b/mm/madvise.c > @@ -234,6 +234,7 @@ static void force_shm_swapin_readahead(struct > vm_area_struct *vma, > > if (!xa_is_value(page)) > continue; > + xas_pause(&xas); > rcu_read_unlock(); > > swap = radix_to_swp_entry(page); > @@ -243,7 +244,6 @@ static void force_shm_swapin_readahead(struct > vm_area_struct *vma, > put_page(page); > > rcu_read_lock(); > - xas_reset(&xas); > } > rcu_read_unlock(); > > _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
