Re: Linux 2.6.22-rc4

From: Badari Pulavarty
Date: Tue Jun 05 2007 - 17:11:23 EST


On Mon, 2007-06-04 at 20:50 -0700, Linus Torvalds wrote:
> So -rc4 is out there now, hopefully shrinking the regression list further.
>

Nothing serious, compile warnings ..

mm/sparse.c:244: warning: `__kmalloc_section_memmap' defined but not used
mm/sparse.c:274: warning: `__kfree_section_memmap' defined but not used

Here is the patch.

Thanks,
Badari

__kmalloc_section_memmap(), vaddr_in_vmalloc_area() and
__kfree_section_memmap() are used only for MEMORY_HOTPLUG.
Moved them under CONFIG_MEMORY_HOTPLUG.

Signed-off-by: Badari Pulavarty <pbadari@xxxxxxxxxx>

Index: linux-2.6.22-rc4/mm/sparse.c
===================================================================
--- linux-2.6.22-rc4.orig/mm/sparse.c 2007-06-04 17:57:25.000000000 -0700
+++ linux-2.6.22-rc4/mm/sparse.c 2007-06-05 13:56:29.000000000 -0700
@@ -240,6 +240,27 @@ static struct page __init *sparse_early_
return NULL;
}

+/*
+ * Allocate the accumulated non-linear sections, allocate a mem_map
+ * for each and record the physical to section mapping.
+ */
+void __init sparse_init(void)
+{
+ unsigned long pnum;
+ struct page *map;
+
+ for (pnum = 0; pnum < NR_MEM_SECTIONS; pnum++) {
+ if (!valid_section_nr(pnum))
+ continue;
+
+ map = sparse_early_mem_map_alloc(pnum);
+ if (!map)
+ continue;
+ sparse_init_one_section(__nr_to_section(pnum), pnum, map);
+ }
+}
+
+#ifdef CONFIG_MEMORY_HOTPLUG
static struct page *__kmalloc_section_memmap(unsigned long nr_pages)
{
struct page *page, *ret;
@@ -280,27 +301,6 @@ static void __kfree_section_memmap(struc
}

/*
- * Allocate the accumulated non-linear sections, allocate a mem_map
- * for each and record the physical to section mapping.
- */
-void __init sparse_init(void)
-{
- unsigned long pnum;
- struct page *map;
-
- for (pnum = 0; pnum < NR_MEM_SECTIONS; pnum++) {
- if (!valid_section_nr(pnum))
- continue;
-
- map = sparse_early_mem_map_alloc(pnum);
- if (!map)
- continue;
- sparse_init_one_section(__nr_to_section(pnum), pnum, map);
- }
-}
-
-#ifdef CONFIG_MEMORY_HOTPLUG
-/*
* returns the number of sections whose mem_maps were properly
* set. If this is <=0, then that means that the passed-in
* map was not consumed and must be freed.




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