On Mon, 10 Mar 2014 20:13:40 -0700 Andrew Morton <[email protected]> wrote:
> > Anyone ? I'm hitting this trace on an almost daily basis, which is a pain > > while trying to reproduce a different bug.. > > Damn, I thought we'd fixed that but it seems not. Cc's added. > > Guys, what stops the migration target page from coming unlocked in > parallel with zap_pte_range()'s call to migration_entry_to_page()? page_table_lock, sort-of. At least, transitions of is_migration_entry() and page_locked() happen under ptl. I don't see any holes in regular migration. Do you know if this is reproducible with CONFIG_NUMA_BALANCING=n or CONFIG_NUMA=n? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
