On Wed, 7 Sep 2005 04:25, Adam Petaccia wrote:
> I think this patch is missing an IFDEF or something (I'm not really a
> programmer, I just like to pretend). Anyway, I've tried building -ck2
> without swap enabled, and it failed. Just to make sure, I make'd
> distclean, and I get the following:
>
> LD .tmp_vmlinux1
> mm/built-in.o: In function `zone_watermark_ok':
> mm/page_alloc.c:763: undefined reference to `delay_prefetch'
> mm/built-in.o: In function `swap_setup':
> mm/swap.c:485: undefined reference to `prepare_prefetch'
> make: *** [.tmp_vmlinux1] Error 1
Bad layout on my part.
Try this patch on top.
Cheers,
Con
Index: linux-2.6.13-ck2test/include/linux/swap.h
===================================================================
--- linux-2.6.13-ck2test.orig/include/linux/swap.h 2005-09-07 20:25:40.000000000 +1000
+++ linux-2.6.13-ck2test/include/linux/swap.h 2005-09-07 20:35:12.000000000 +1000
@@ -186,6 +186,32 @@ extern int shmem_unuse(swp_entry_t entry
extern void swap_unplug_io_fn(struct backing_dev_info *, struct page *);
+#ifdef CONFIG_SWAP_PREFETCH
+/* mm/swap_prefetch.c */
+extern void prepare_prefetch(void);
+extern void add_to_swapped_list(unsigned long index);
+extern void remove_from_swapped_list(unsigned long index);
+extern void delay_prefetch(void);
+
+#else /* CONFIG_SWAP_PREFETCH */
+static inline void add_to_swapped_list(unsigned long index)
+{
+}
+
+static inline void prepare_prefetch(void)
+{
+}
+
+static inline void remove_from_swapped_list(unsigned long index)
+{
+}
+
+static inline void delay_prefetch(void)
+{
+}
+
+#endif /* CONFIG_SWAP_PREFETCH */
+
#ifdef CONFIG_SWAP
/* linux/mm/page_io.c */
extern int swap_readpage(struct file *, struct page *);
@@ -249,32 +275,6 @@ static inline void put_swap_token(struct
__put_swap_token(mm);
}
-#ifdef CONFIG_SWAP_PREFETCH
-/* mm/swap_prefetch.c */
-extern void prepare_prefetch(void);
-extern void add_to_swapped_list(unsigned long index);
-extern void remove_from_swapped_list(unsigned long index);
-extern void delay_prefetch(void);
-
-#else /* CONFIG_SWAP_PREFETCH */
-static inline void add_to_swapped_list(unsigned long index)
-{
-}
-
-static inline void prepare_prefetch(void)
-{
-}
-
-static inline void remove_from_swapped_list(unsigned long index)
-{
-}
-
-static inline void delay_prefetch(void)
-{
-}
-
-#endif /* CONFIG_SWAP_PREFETCH */
-
#else /* CONFIG_SWAP */
#define total_swap_pages 0
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