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is_vmalloc_addr(): Check if an address is within the vmalloc boundaries

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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>
This commit is contained in:
Christoph Lameter
2008-02-04 22:28:34 -08:00
committed by Linus Torvalds
parent 0b7a96114b
commit 9e2779fa28
7 changed files with 14 additions and 19 deletions
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10
mm/sparse.c
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@@ -353,17 +353,9 @@ static inline struct page *kmalloc_section_memmap(unsigned long pnum, int nid,
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,