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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2021-10-04 15:46:48 +0200 |
|---|---|---|
| committer | Vlastimil Babka <vbabka@suse.cz> | 2022-01-06 12:27:03 +0100 |
| commit | c5e97ed154589524a1df4ae2be55c4cfdb0d0573 (patch) | |
| tree | 95cb494d3206da298e780e77ad9a8699d21548b6 /mm/bootmem_info.c | |
| parent | zsmalloc: Stop using slab fields in struct page (diff) | |
| download | linux-c5e97ed154589524a1df4ae2be55c4cfdb0d0573.tar.xz linux-c5e97ed154589524a1df4ae2be55c4cfdb0d0573.zip | |
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) <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>
Diffstat (limited to 'mm/bootmem_info.c')
| -rw-r--r-- | mm/bootmem_info.c | 7 |
1 files changed, 3 insertions, 4 deletions
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); |