From c5e97ed154589524a1df4ae2be55c4cfdb0d0573 Mon Sep 17 00:00:00 2001 From: "Matthew Wilcox (Oracle)" Date: Mon, 4 Oct 2021 14:46:48 +0100 Subject: bootmem: Use page->index instead of page->freelist 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) Signed-off-by: Vlastimil Babka Acked-by: Johannes Weiner Cc: Dave Hansen Cc: Andy Lutomirski Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Cc: "H. Peter Anvin" --- mm/bootmem_info.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'mm/bootmem_info.c') diff --git a/mm/bootmem_info.c b/mm/bootmem_info.c index f03f42f426f6..f18a631e7479 100644 --- a/mm/bootmem_info.c +++ b/mm/bootmem_info.c @@ -15,7 +15,7 @@ void get_page_bootmem(unsigned long info, struct page *page, unsigned long type) { - page->freelist = (void *)type; + page->index = type; SetPagePrivate(page); set_page_private(page, info); page_ref_inc(page); @@ -23,14 +23,13 @@ void get_page_bootmem(unsigned long info, struct page *page, unsigned long type) void put_page_bootmem(struct page *page) { - unsigned long type; + unsigned long type = page->index; - type = (unsigned long) page->freelist; BUG_ON(type < MEMORY_HOTPLUG_MIN_BOOTMEM_TYPE || type > MEMORY_HOTPLUG_MAX_BOOTMEM_TYPE); if (page_ref_dec_return(page) == 1) { - page->freelist = NULL; + page->index = 0; ClearPagePrivate(page); set_page_private(page, 0); INIT_LIST_HEAD(&page->lru); -- cgit v1.2.3