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mm: rename page_order() to buddy_order()

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The current page_order() can only be called on pages in the buddy
allocator.  For compound pages, you have to use compound_order().  This is
confusing and led to a bug, so rename page_order() to buddy_order().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: https://lkml.kernel.org/r/20201001152259.14932-2-willy@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle)
2020-10-15 20:10:15 -07:00
committed by Linus Torvalds
parent 1f0f8c0de0
commit ab130f9108
7 changed files with 29 additions and 29 deletions
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2
mm/page_reporting.c
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@@ -92,7 +92,7 @@ page_reporting_drain(struct page_reporting_dev_info *prdev,
* report on the new larger page when we make our way
* up to that higher order.
*/
if (PageBuddy(page) && page_order(page) == order)
if (PageBuddy(page) && buddy_order(page) == order)
__SetPageReported(page);
} while ((sg = sg_next(sg)));