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>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
index 1be73082edd3..7dd26e18cbfd 100644
--- a/fs/proc/kcore.c
+++ b/fs/proc/kcore.c
@@ -325,7 +325,7 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos)
                 if (m == NULL) {
                         if (clear_user(buffer, tsz))
                                 return -EFAULT;
-                } else if ((start >= VMALLOC_START) && (start < VMALLOC_END)) {
+                } else if (is_vmalloc_addr((void *)start)) {
                         char * elf_buf;
                         struct vm_struct *m;
                         unsigned long curstart = start;