i2p/haiku-beta6
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

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

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files
src/kernel/core/vm/vm.c
+10 -1
View File
@@ -2592,6 +2592,15 @@ resize_area(area_id areaID, size_t newSize)
} }
current->size = 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) { if (failed) {
@@ -2601,7 +2610,7 @@ resize_area(area_id areaID, size_t newSize)
goto err; goto err;
} }
vm_cache_resize(cache, newSize); vm_cache_resize(cache, newSize);
mutex_unlock(&cache->lock); mutex_unlock(&cache->lock);