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bootmem: fix wrong call parameter for free_bootmem()

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It is strange that alloc_bootmem() returns a virtual address and
free_bootmem() requires a physical address.  Anyway, free_bootmem()'s
first parameter should be physical address.

There are some call sites for free_bootmem() with virtual address.  So fix
them.

[[email protected]: improve free_bootmem() and free_bootmem_pate() documentation]
Signed-off-by: Joonsoo Kim <[email protected]>
Cc: Haavard Skinnemoen <[email protected]>
Cc: Hans-Christian Egtvedt <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: FUJITA Tomonori <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Joonsoo Kim 2012-12-11 16:03:10 -08:00 • committed by Linus Torvalds
commit 81df9bff26
5 changed files with 16 additions and 16 deletions
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20
mm/bootmem.c
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@ -147,21 +147,21 @@ unsigned long __init init_bootmem(unsigned long start, unsigned long pages)
/*
* free_bootmem_late - free bootmem pages directly to page allocator
* @addr: starting address of the range
* @addr: starting physical address of the range
* @size: size of the range in bytes
*
* This is only useful when the bootmem allocator has already been torn
* down, but we are still initializing the system. Pages are given directly
* to the page allocator, no bootmem metadata is updated because it is gone.
*/
void __init free_bootmem_late(unsigned long addr, unsigned long size)
void __init free_bootmem_late(unsigned long physaddr, unsigned long size)
{
unsigned long cursor, end;
kmemleak_free_part(__va(addr), size);
kmemleak_free_part(__va(physaddr), size);
cursor = PFN_UP(addr);
end = PFN_DOWN(addr + size);
cursor = PFN_UP(physaddr);
end = PFN_DOWN(physaddr + size);
for (; cursor < end; cursor++) {
__free_pages_bootmem(pfn_to_page(cursor), 0);
@ -377,21 +377,21 @@ void __init free_bootmem_node(pg_data_t *pgdat, unsigned long physaddr,
/**
* free_bootmem - mark a page range as usable
* @addr: starting address of the range
* @addr: starting physical address of the range
* @size: size of the range in bytes
*
* Partial pages will be considered reserved and left as they are.
*
* The range must be contiguous but may span node boundaries.
*/
void __init free_bootmem(unsigned long addr, unsigned long size)
void __init free_bootmem(unsigned long physaddr, unsigned long size)
{
unsigned long start, end;
kmemleak_free_part(__va(addr), size);
kmemleak_free_part(__va(physaddr), size);
start = PFN_UP(addr);
end = PFN_DOWN(addr + size);
start = PFN_UP(physaddr);
end = PFN_DOWN(physaddr + size);
mark_bootmem(start, end, 0, 0);
}