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Subject[PATCH] mm/vmalloc: don't use vmalloc_end
At least on ia64 vmalloc_end is a global variable that VMALLOC_END
expands to. Hence having a local variable named vmalloc_end and
initialized from VMALLOC_END won't work on such platforms. Rename
these variables, and for consistency also rename vmalloc_start.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Tony Luck <tony.luck@intel.com>

---
mm/vmalloc.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)

--- linux-2.6.32/mm/vmalloc.c
+++ 2.6.32-dont-use-vmalloc_end/mm/vmalloc.c
@@ -2060,13 +2060,13 @@ static unsigned long pvm_determine_end(s
struct vmap_area **pprev,
unsigned long align)
{
- const unsigned long vmalloc_end = VMALLOC_END & ~(align - 1);
+ const unsigned long end = VMALLOC_END & ~(align - 1);
unsigned long addr;

if (*pnext)
- addr = min((*pnext)->va_start & ~(align - 1), vmalloc_end);
+ addr = min((*pnext)->va_start & ~(align - 1), end);
else
- addr = vmalloc_end;
+ addr = end;

while (*pprev && (*pprev)->va_end > addr) {
*pnext = *pprev;
@@ -2105,8 +2105,8 @@ struct vm_struct **pcpu_get_vm_areas(con
const size_t *sizes, int nr_vms,
size_t align, gfp_t gfp_mask)
{
- const unsigned long vmalloc_start = ALIGN(VMALLOC_START, align);
- const unsigned long vmalloc_end = VMALLOC_END & ~(align - 1);
+ const unsigned long vstart = ALIGN(VMALLOC_START, align);
+ const unsigned long vend = VMALLOC_END & ~(align - 1);
struct vmap_area **vas, *prev, *next;
struct vm_struct **vms;
int area, area2, last_area, term_area;
@@ -2142,7 +2142,7 @@ struct vm_struct **pcpu_get_vm_areas(con
}
last_end = offsets[last_area] + sizes[last_area];

- if (vmalloc_end - vmalloc_start < last_end) {
+ if (vend - vstart < last_end) {
WARN_ON(true);
return NULL;
}
@@ -2167,7 +2167,7 @@ retry:
end = start + sizes[area];

if (!pvm_find_next_prev(vmap_area_pcpu_hole, &next, &prev)) {
- base = vmalloc_end - last_end;
+ base = vend - last_end;
goto found;
}
base = pvm_determine_end(&next, &prev, align) - end;
@@ -2180,7 +2180,7 @@ retry:
* base might have underflowed, add last_end before
* comparing.
*/
- if (base + last_end < vmalloc_start + last_end) {
+ if (base + last_end < vstart + last_end) {
spin_unlock(&vmap_area_lock);
if (!purged) {
purge_vmap_area_lazy();




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