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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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fs/proc/kcore.c
+1 -1
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@@ -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;