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mm: use page->private instead of page->index in percpu

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The percpu allocator only uses one field in struct page, just change it
from page->index to page->private.

Link: https://lkml.kernel.org/r/20241005200121.3231142-8-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2024-10-05 21:01:18 +01:00 committed by Andrew Morton
parent 544ec0ed37
commit 33d7f15f91
1 changed files with 2 additions and 2 deletions
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mm/percpu.c
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@ -253,13 +253,13 @@ static int pcpu_chunk_slot(const struct pcpu_chunk *chunk)
/* set the pointer to a chunk in a page struct */ /* set the pointer to a chunk in a page struct */
static void pcpu_set_page_chunk(struct page *page, struct pcpu_chunk *pcpu) static void pcpu_set_page_chunk(struct page *page, struct pcpu_chunk *pcpu)
{ {
page->index = (unsigned long)pcpu; page->private = (unsigned long)pcpu;
} }
/* obtain pointer to a chunk from a page struct */ /* obtain pointer to a chunk from a page struct */
static struct pcpu_chunk *pcpu_get_page_chunk(struct page *page) static struct pcpu_chunk *pcpu_get_page_chunk(struct page *page)
{ {
return (struct pcpu_chunk *)page->index; return (struct pcpu_chunk *)page->private;
} }
static int __maybe_unused pcpu_page_idx(unsigned int cpu, int page_idx) static int __maybe_unused pcpu_page_idx(unsigned int cpu, int page_idx)