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resize_area() must unmap the area beyond the new size, if the area has shrinked.

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9267 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2004-10-08 23:19:33 +00:00
parent ed3d2e92e8
commit adf3b19660
1 changed files with 10 additions and 1 deletions
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11
src/kernel/core/vm/vm.c
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@ -2592,6 +2592,15 @@ resize_area(area_id areaID, size_t newSize)
}
current->size = newSize;
// we also need to unmap all pages beyond the new size, if the area has shrinked
if (newSize < oldSize) {
vm_translation_map *map = &current->aspace->translation_map;
map->ops->lock(map);
map->ops->unmap(map, current->base + newSize, current->base + oldSize - 1);
map->ops->unlock(map);
}
}
if (failed) {
@ -2601,7 +2610,7 @@ resize_area(area_id areaID, size_t newSize)
goto err;
}
vm_cache_resize(cache, newSize);
mutex_unlock(&cache->lock);