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authorTejun Heo <tj@kernel.org>2011-07-12 11:58:06 +0400
committerH. Peter Anvin <hpa@linux.intel.com>2011-07-14 03:35:56 +0400
commit53348f27168534561c0c814843bbf181314374f4 (patch)
tree619f7945ecb15317dd211c68267eb6603295521f /mm/page_alloc.c
parentbf61549a2d8e0326f5d6e4d1718883a7212d725f (diff)
downloadlinux-53348f27168534561c0c814843bbf181314374f4.tar.xz
bootmem: Fix __free_pages_bootmem() to use @order properly
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>
Diffstat (limited to 'mm/page_alloc.c')
-rw-r--r--mm/page_alloc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 9119faae6e6a..b6da6ed818a8 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -705,10 +705,10 @@ void __meminit __free_pages_bootmem(struct page *page, unsigned int order)
int loop;
prefetchw(page);
- for (loop = 0; loop < BITS_PER_LONG; loop++) {
+ for (loop = 0; loop < (1 << order); loop++) {
struct page *p = &page[loop];
- if (loop + 1 < BITS_PER_LONG)
+ if (loop + 1 < (1 << order))
prefetchw(p + 1);
__ClearPageReserved(p);
set_page_count(p, 0);