Commit 33d7f15f authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle) Committed by Andrew Morton
Browse files

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

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: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 544ec0ed

mm/percpu.c

+2 −2
Original line number Diff line number Diff line
@@ -253,13 +253,13 @@ static int pcpu_chunk_slot(const struct pcpu_chunk *chunk) 
/* set the pointer to a chunk in a page struct */

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 */

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)