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The block allocator needs to reserve pages, too, when it maps pages.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22482 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2007-10-08 08:25:47 +00:00
parent 98b97f9603
commit 7faf279d73
1 changed files with 5 additions and 0 deletions
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src/system/kernel/cache/block_allocator.cpp
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@@ -363,6 +363,10 @@ block_range::Allocate(block_cache *cache, block_chunk **_chunk)
vm_address_space *addressSpace = vm_kernel_address_space(); vm_address_space *addressSpace = vm_kernel_address_space();
vm_translation_map *map = &addressSpace->translation_map; vm_translation_map *map = &addressSpace->translation_map;
size_t reservePages = map->ops->map_max_pages_need(map,
0, numPages * B_PAGE_SIZE);
vm_page_reserve_pages(reservePages);
map->ops->lock(map); map->ops->lock(map);
for (uint32 i = 0; i < numPages; i++) { for (uint32 i = 0; i < numPages; i++) {
@@ -372,6 +376,7 @@ block_range::Allocate(block_cache *cache, block_chunk **_chunk)
} }
map->ops->unlock(map); map->ops->unlock(map);
vm_page_unreserve_pages(reservePages);
chunks[chunk].mapped = true; chunks[chunk].mapped = true;
} }