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--- mm/mmap.c.orig 2005-03-05 13:29:06.000000000 -0500
+++ mm/mmap.c 2005-03-05 13:33:51.000000000 -0500
@@ -1014,7 +1014,7 @@
* we just free'd - but there's no telling how much before.
*/
static void free_pgtables(struct mm_struct * mm, struct vm_area_struct *prev,
- unsigned long start, unsigned long end)
+ struct vm_area_struct *mpnt, unsigned long start, unsigned long end)
{
unsigned long first = start & PGDIR_MASK;
unsigned long last = end + PGDIR_SIZE - 1;
@@ -1046,6 +1046,14 @@
break;
}
no_mmaps:
+ while (mpnt && first < last) {
+ if ((mpnt->vm_end > first) &&(last > mpnt->vm_start)) {
+ first = mpnt->vm_end + PGDIR_SIZE - 1;
+ last = mpnt->vm_start;
+ }
+ mpnt = mpnt->vm_next;
+ }
+
if (last < first)
return;
/*
@@ -1106,7 +1114,7 @@
extra = unmap_vma(mm, addr, len, mpnt, extra);
}
- free_pgtables(mm, prev, addr, addr+len);
+ free_pgtables(mm, prev, NULL, addr, addr+len);
return extra;
}
@@ -1130,7 +1138,7 @@
find_vma_prev(mm, mpnt->vm_start, &prev);
extra_m = unmap_vma(mm, addr_m, len, mpnt, extra_m);
- free_pgtables(mm, prev, start, end);
+ free_pgtables(mm, prev, free_m, start, end);
}
return extra_m;
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