On Wed, 26 Oct 2005, Dave Hansen wrote:
> Why is this #ifdef needed? PageSwapCache() is #defined to 0 when !
> CONFIG_SWAP.
Right.
Index: linux-2.6.14-rc5-mm1/mm/vmscan.c
===================================================================
--- linux-2.6.14-rc5-mm1.orig/mm/vmscan.c 2005-10-26 09:46:20.000000000 -0700
+++ linux-2.6.14-rc5-mm1/mm/vmscan.c 2005-10-26 09:47:33.000000000 -0700
@@ -387,7 +387,6 @@ static inline int remove_mapping(struct
if (unlikely(PageDirty(page)))
goto cannot_free;
-#ifdef CONFIG_SWAP
if (PageSwapCache(page)) {
swp_entry_t swap = { .val = page_private(page) };
add_to_swapped_list(swap.val);
@@ -397,7 +396,6 @@ static inline int remove_mapping(struct
__put_page(page); /* The pagecache ref */
return 1;
}
-#endif /* CONFIG_SWAP */
__remove_from_page_cache(page);
write_unlock_irq(&mapping->tree_lock);
-
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