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vm_cache_resize() now requires you to have the vm_cache_ref lock held.

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This actually reflects the only usage of this function anyway, and thus,
fixes the resize_area() function.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9265 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2004-10-08 23:11:50 +00:00
parent f774bf16ea
commit ad07c81011
1 changed files with 5 additions and 4 deletions
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9
src/kernel/core/vm/vm_cache.c
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@ -289,6 +289,11 @@ vm_cache_remove_page(vm_cache_ref *cache_ref, vm_page *page)
}
/** This function updates the size field of the vm_cache structure.
* If needed, it will free up all pages that don't belong to the cache anymore.
* The vm_cache_ref lock must be held when you call it.
*/
status_t
vm_cache_resize(vm_cache_ref *cacheRef, size_t newSize)
{
@ -299,8 +304,6 @@ vm_cache_resize(vm_cache_ref *cacheRef, size_t newSize)
if (!cache->temporary)
return B_NOT_ALLOWED;
mutex_lock(&cacheRef->lock);
oldSize = cache->virtual_size;
if (newSize < oldSize) {
// we need to remove all pages in the cache outside of the new virtual size
@ -318,8 +321,6 @@ vm_cache_resize(vm_cache_ref *cacheRef, size_t newSize)
}
cache->virtual_size = newSize;
mutex_unlock(&cacheRef->lock);
vm_increase_max_commit(oldSize - newSize);
return B_OK;