is_vmalloc_addr(): Check if an address is within the vmalloc boundaries
Checking if an address is a vmalloc address is done in a couple of places.
Define a common version in mm.h and replace the other checks.
Again the include structures suck. The definition of VMALLOC_START and
VMALLOC_END is not available in vmalloc.h since highmem.c cannot be included
there.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/sparse.c b/mm/sparse.c
index a2183cb..7859c80 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -353,17 +353,9 @@
return __kmalloc_section_memmap(nr_pages);
}
-static int vaddr_in_vmalloc_area(void *addr)
-{
- if (addr >= (void *)VMALLOC_START &&
- addr < (void *)VMALLOC_END)
- return 1;
- return 0;
-}
-
static void __kfree_section_memmap(struct page *memmap, unsigned long nr_pages)
{
- if (vaddr_in_vmalloc_area(memmap))
+ if (is_vmalloc_addr(memmap))
vfree(memmap);
else
free_pages((unsigned long)memmap,
