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kernel/vm: Change cache commitment at end of Resize().

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If we change it at the top, then we shrink the commitment before
we actually have released the relevant pages.
This commit is contained in:
Augustin Cavalier
2024-10-02 15:57:42 -04:00
parent 7f6fe7b354
commit 0a4a06eee3
1 changed files with 5 additions and 5 deletions
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src/system/kernel/vm/VMCache.cpp
+5 -5
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@@ -1157,13 +1157,9 @@ VMCache::Resize(off_t newSize, int priority)
{ {
TRACE(("VMCache::Resize(cache %p, newSize %" B_PRIdOFF ") old size %" TRACE(("VMCache::Resize(cache %p, newSize %" B_PRIdOFF ") old size %"
B_PRIdOFF "\n", this, newSize, this->virtual_end)); B_PRIdOFF "\n", this, newSize, this->virtual_end));
this->AssertLocked();
T(Resize(this, newSize)); T(Resize(this, newSize));
status_t status = Commit(newSize - virtual_base, priority); AssertLocked();
if (status != B_OK)
return status;
page_num_t oldPageCount = (page_num_t)((virtual_end + B_PAGE_SIZE - 1) page_num_t oldPageCount = (page_num_t)((virtual_end + B_PAGE_SIZE - 1)
>> PAGE_SHIFT); >> PAGE_SHIFT);
@@ -1177,6 +1173,10 @@ VMCache::Resize(off_t newSize, int priority)
; ;
} }
status_t status = Commit(newSize - virtual_base, priority);
if (status != B_OK)
return status;
virtual_end = newSize; virtual_end = newSize;
return B_OK; return B_OK;
} }