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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-12-16 17:06:33 +0100 |
|---|---|---|
| committer | Matthew Wilcox (Oracle) <willy@infradead.org> | 2021-10-18 13:49:36 +0200 |
| commit | 08b0b0059bf1c2e8637f724cc7cc4d29b1e808de (patch) | |
| tree | 795315583bdbd72e41a2509662d48f377d477893 /mm/util.c | |
| parent | mm: Add folio_raw_mapping() (diff) | |
| download | linux-08b0b0059bf1c2e8637f724cc7cc4d29b1e808de.tar.xz linux-08b0b0059bf1c2e8637f724cc7cc4d29b1e808de.zip | |
mm: Add flush_dcache_folio()
This is a default implementation which calls flush_dcache_page() on
each page in the folio. If architectures can do better, they should
implement their own version of it.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Diffstat (limited to 'mm/util.c')
| -rw-r--r-- | mm/util.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/mm/util.c b/mm/util.c index 96a5e7185f65..bf860838282c 100644 --- a/mm/util.c +++ b/mm/util.c @@ -1076,3 +1076,14 @@ void page_offline_end(void) up_write(&page_offline_rwsem); } EXPORT_SYMBOL(page_offline_end); + +#ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_FOLIO +void flush_dcache_folio(struct folio *folio) +{ + long i, nr = folio_nr_pages(folio); + + for (i = 0; i < nr; i++) + flush_dcache_page(folio_page(folio, i)); +} +EXPORT_SYMBOL(flush_dcache_folio); +#endif |