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mm/memcg: Convert mem_cgroup_uncharge() to take a folio

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Convert all the callers to call page_folio().  Most of them were already
using a head page, but a few of them I can't prove were, so this may
actually fix a bug.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Reviewed-by: David Howells <dhowells@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
This commit is contained in:
Matthew Wilcox (Oracle) 2021-05-01 20:42:23 -04:00
parent c4ed6ebfcb
commit bbc6b703b2
8 changed files with 22 additions and 21 deletions
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2
mm/memremap.c
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@ -505,7 +505,7 @@ void free_devmap_managed_page(struct page *page)
__ClearPageWaiters(page);
mem_cgroup_uncharge(page);
mem_cgroup_uncharge(page_folio(page));
/*
* When a device_private page is freed, the page->mapping field