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bootmem: Use page->index instead of page->freelist

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page->freelist is for the use of slab.  Using page->index is the same
set of bits as page->freelist, and by using an integer instead of a
pointer, we can avoid casts.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: <x86@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
This commit is contained in:
Matthew Wilcox (Oracle)
2021-10-04 14:46:48 +01:00
committed by Vlastimil Babka
parent ffedd09fa9
commit c5e97ed154
4 changed files with 6 additions and 7 deletions
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2
include/linux/bootmem_info.h
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@@ -30,7 +30,7 @@ void put_page_bootmem(struct page *page);
*/
static inline void free_bootmem_page(struct page *page)
{
unsigned long magic = (unsigned long)page->freelist;
unsigned long magic = page->index;
/*
* The reserve_bootmem_region sets the reserved flag on bootmem