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Added function that allocates more than one page at a time, but without

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the need for having them in a run.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10406 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2004-12-12 20:53:47 +00:00
parent c02ff3b775
commit 4692c99460
1 changed files with 26 additions and 0 deletions
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26
src/kernel/core/vm/vm_page.c
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@ -645,6 +645,32 @@ vm_page_allocate_page(int page_state)
}
/** Allocates a number of pages and puts their pointers into the provided
* array. All pages are marked busy.
* Returns B_OK on success, and B_NO_MEMORY when there aren't any free
* pages left to allocate.
*/
status_t
vm_page_allocate_pages(int pageState, vm_page **pages, uint32 numPages)
{
uint32 i;
for (i = 0; i < numPages; i++) {
pages[i] = vm_page_allocate_page(pageState);
if (pages[i] == NULL) {
// allocation failed, we need to free what we already have
while (i-- > 0)
vm_page_set_state(pages[i], pageState);
return B_NO_MEMORY;
}
}
return B_OK;
}
vm_page *
vm_page_allocate_page_run(int page_state, addr_t len)
{