[PATCH] memory hotplug: move section_mem_map alloc to sparse.c

This basically keeps up from having to extern __kmalloc_section_memmap().

The vaddr_in_vmalloc_area() helper could go in a vmalloc header, but that
header gets hard to work with, because it needs some arch-specific macros.
Just stick it in here for now, instead of creating another header.

Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Lion Vollnhals <webmaster@schiggl.de>
Signed-off-by: Jiri Slaby <xslaby@fi.muni.cz>
Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 4 deletions

diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 785cb6e6b91c..b7ddd651d664 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -340,15 +340,12 @@ static int memory_probe_init(void)
 static int add_memory_block(unsigned long node_id, struct mem_section *section,
                      unsigned long state, int phys_device)
 {
-        size_t size = sizeof(struct memory_block);
-        struct memory_block *mem = kmalloc(size, GFP_KERNEL);
+        struct memory_block *mem = kzalloc(sizeof(*mem), GFP_KERNEL);
         int ret = 0;
 
         if (!mem)
                 return -ENOMEM;
 
-        memset(mem, 0, size);
-
         mem->phys_index = __section_nr(section);
         mem->state = state;
         init_MUTEX(&mem->state_sem);