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bootmem: Fix __free_pages_bootmem() to use @order properly

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a226f6c899 (FRV: Clean up bootmem allocator's page freeing algorithm)
separated out __free_pages_bootmem() from free_all_bootmem_core().
__free_pages_bootmem() takes @order argument but it assumes @order is
either 0 or ilog2(BITS_PER_LONG).  Note that all the current users
match that assumption and this doesn't cause actual problems.

Fix it by using 1 << order instead of BITS_PER_LONG.

Signed-off-by: Tejun Heo <tj@kernel.org>
Link: http://lkml.kernel.org/r/1310457490-3356-3-git-send-email-tj@kernel.org
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Tejun Heo 2011-07-12 09:58:06 +02:00 committed by H. Peter Anvin
parent bf61549a2d
commit 53348f2716
1 changed files with 2 additions and 2 deletions
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4
mm/page_alloc.c
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@ -705,10 +705,10 @@ void __meminit __free_pages_bootmem(struct page *page, unsigned int order)
int loop; int loop;
prefetchw(page); prefetchw(page);
for (loop = 0; loop < BITS_PER_LONG; loop++) { for (loop = 0; loop < (1 << order); loop++) {
struct page *p = &page[loop]; struct page *p = &page[loop];
if (loop + 1 < BITS_PER_LONG) if (loop + 1 < (1 << order))
prefetchw(p + 1); prefetchw(p + 1);
__ClearPageReserved(p); __ClearPageReserved(p);
set_page_count(p, 0); set_page_count(p, 0);