[PATCH v9 47/96] mm: Add arch_make_folio_accessible
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Date: 2021-05-05 16:06:45
Also in:
linux-fsdevel, lkml
Subsystem:
memory management - core, memory management - page allocator, the rest · Maintainers:
Andrew Morton, David Hildenbrand, Vlastimil Babka, Linus Torvalds
As a default implementation, call arch_make_page_accessible n times. If an architecture can do better, it can override this. Also move the default implementation of arch_make_page_accessible() from gfp.h to mm.h. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> --- include/linux/gfp.h | 6 ------ include/linux/mm.h | 21 +++++++++++++++++++++ 2 files changed, 21 insertions(+), 6 deletions(-)
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 11da8af06704..a503d928e684 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h@@ -508,12 +508,6 @@ static inline void arch_free_page(struct page *page, int order) { } #ifndef HAVE_ARCH_ALLOC_PAGE static inline void arch_alloc_page(struct page *page, int order) { } #endif -#ifndef HAVE_ARCH_MAKE_PAGE_ACCESSIBLE -static inline int arch_make_page_accessible(struct page *page) -{ - return 0; -} -#endif struct page *__alloc_pages(gfp_t gfp, unsigned int order, int preferred_nid, nodemask_t *nodemask);
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 6bfc43309e4b..75279db82040 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h@@ -1725,6 +1725,27 @@ static inline size_t folio_size(struct folio *folio) return PAGE_SIZE << folio_order(folio); } +#ifndef HAVE_ARCH_MAKE_PAGE_ACCESSIBLE +static inline int arch_make_page_accessible(struct page *page) +{ + return 0; +} +#endif + +#ifndef HAVE_ARCH_MAKE_FOLIO_ACCESSIBLE +static inline int arch_make_folio_accessible(struct folio *folio) +{ + int ret, i; + for (i = 0; i < folio_nr_pages(folio); i++) { + ret = arch_make_page_accessible(folio_page(folio, i)); + if (ret) + break; + } + + return ret; +} +#endif + /* * Some inline functions in vmstat.h depend on page_zone() */
--
2.30.2