Re: [PATCH v14 038/138] mm/memcg: Add folio_memcg() and related functions
flat view
From: Vlastimil Babka <hidden>
Date: 2021-08-11 10:32:49
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linux-fsdevel, lkml
On 7/15/21 5:35 AM, Matthew Wilcox (Oracle) wrote:
memcg information is only stored in the head page, so the memcg subsystem needs to assure that all accesses are to the head page. The first step is converting page_memcg() to folio_memcg(). The callers of page_memcg() and PageMemcgKmem() are not yet ready to be converted to use folios, so retain them as wrappers around folio_memcg() and folio_memcg_kmem(). They will be converted in a later patch set. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Vlastimil Babka <redacted> Nit:
quoted hunk ↗ jump to hunk
--- include/linux/memcontrol.h | 109 ++++++++++++++++++++++--------------- mm/memcontrol.c | 21 ++++--- 2 files changed, 77 insertions(+), 53 deletions(-)diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index bfe5c486f4ad..eabae5874161 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h@@ -372,6 +372,7 @@ enum page_memcg_data_flags { #define MEMCG_DATA_FLAGS_MASK (__NR_MEMCG_DATA_FLAGS - 1) static inline bool PageMemcgKmem(struct page *page);
I think this fwd declaration is no longer needed.
+static inline bool folio_memcg_kmem(struct folio *folio);