Christoph Lameter <[email protected]> wrote: > > On Fri, 14 Apr 2006, Andrew Morton wrote: > > > > @@ -305,6 +306,12 @@ struct page * lookup_swap_cache(swp_entr > > > { > > > struct page *page; > > > > > > + if (is_migration_entry(entry)) { > > > + page = migration_entry_to_page(entry); > > > + get_page(page); > > > + return page; > > > + } > > > > What locking ensures that the state of `entry' remains unaltered across the > > is_migration_entry() and migration_entry_to_page() calls? > > entry is a variable passed by value to the function. Sigh. What locking ensures that the state of the page referred to by `entry' is stable? - 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/
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