| Message ID | 20240213215520.1048625-3-zi.yan@sent.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Split a folio to any lower order folios | expand |
On 13.02.24 22:55, Zi Yan wrote: > From: Zi Yan <ziy@nvidia.com> > > We do not have non power of two pages, using nr is error prone if nr > is not power-of-two. Use page order instead. > > Signed-off-by: Zi Yan <ziy@nvidia.com> > --- > include/linux/page_owner.h | 8 ++++---- > mm/huge_memory.c | 2 +- > mm/page_alloc.c | 4 ++-- > mm/page_owner.c | 3 ++- > 4 files changed, 9 insertions(+), 8 deletions(-) > > diff --git a/include/linux/page_owner.h b/include/linux/page_owner.h > index 119a0c9d2a8b..d7878523adfc 100644 > --- a/include/linux/page_owner.h > +++ b/include/linux/page_owner.h > @@ -11,7 +11,7 @@ extern struct page_ext_operations page_owner_ops; > extern void __reset_page_owner(struct page *page, unsigned short order); > extern void __set_page_owner(struct page *page, > unsigned short order, gfp_t gfp_mask); > -extern void __split_page_owner(struct page *page, unsigned int nr); > +extern void __split_page_owner(struct page *page, int order); > extern void __folio_copy_owner(struct folio *newfolio, struct folio *old); > extern void __set_page_owner_migrate_reason(struct page *page, int reason); > extern void __dump_page_owner(const struct page *page); > @@ -31,10 +31,10 @@ static inline void set_page_owner(struct page *page, > __set_page_owner(page, order, gfp_mask); > } > > -static inline void split_page_owner(struct page *page, unsigned int nr) > +static inline void split_page_owner(struct page *page, int order) > { > if (static_branch_unlikely(&page_owner_inited)) > - __split_page_owner(page, nr); > + __split_page_owner(page, order); > } > static inline void folio_copy_owner(struct folio *newfolio, struct folio *old) > { > @@ -60,7 +60,7 @@ static inline void set_page_owner(struct page *page, > { > } > static inline void split_page_owner(struct page *page, > - unsigned short order) > + int order) I assume this will fit into a single line now. Acked-by: David Hildenbrand <david@redhat.com>
On 14 Feb 2024, at 4:14, David Hildenbrand wrote: > On 13.02.24 22:55, Zi Yan wrote: >> From: Zi Yan <ziy@nvidia.com> >> >> We do not have non power of two pages, using nr is error prone if nr >> is not power-of-two. Use page order instead. >> >> Signed-off-by: Zi Yan <ziy@nvidia.com> >> --- >> include/linux/page_owner.h | 8 ++++---- >> mm/huge_memory.c | 2 +- >> mm/page_alloc.c | 4 ++-- >> mm/page_owner.c | 3 ++- >> 4 files changed, 9 insertions(+), 8 deletions(-) >> >> diff --git a/include/linux/page_owner.h b/include/linux/page_owner.h >> index 119a0c9d2a8b..d7878523adfc 100644 >> --- a/include/linux/page_owner.h >> +++ b/include/linux/page_owner.h >> @@ -11,7 +11,7 @@ extern struct page_ext_operations page_owner_ops; >> extern void __reset_page_owner(struct page *page, unsigned short order); >> extern void __set_page_owner(struct page *page, >> unsigned short order, gfp_t gfp_mask); >> -extern void __split_page_owner(struct page *page, unsigned int nr); >> +extern void __split_page_owner(struct page *page, int order); >> extern void __folio_copy_owner(struct folio *newfolio, struct folio *old); >> extern void __set_page_owner_migrate_reason(struct page *page, int reason); >> extern void __dump_page_owner(const struct page *page); >> @@ -31,10 +31,10 @@ static inline void set_page_owner(struct page *page, >> __set_page_owner(page, order, gfp_mask); >> } >> -static inline void split_page_owner(struct page *page, unsigned int nr) >> +static inline void split_page_owner(struct page *page, int order) >> { >> if (static_branch_unlikely(&page_owner_inited)) >> - __split_page_owner(page, nr); >> + __split_page_owner(page, order); >> } >> static inline void folio_copy_owner(struct folio *newfolio, struct folio *old) >> { >> @@ -60,7 +60,7 @@ static inline void set_page_owner(struct page *page, >> { >> } >> static inline void split_page_owner(struct page *page, >> - unsigned short order) >> + int order) > > I assume this will fit into a single line now. Sure. > > Acked-by: David Hildenbrand <david@redhat.com> Thanks. -- Best Regards, Yan, Zi
diff --git a/include/linux/page_owner.h b/include/linux/page_owner.h index 119a0c9d2a8b..d7878523adfc 100644 --- a/include/linux/page_owner.h +++ b/include/linux/page_owner.h @@ -11,7 +11,7 @@ extern struct page_ext_operations page_owner_ops; extern void __reset_page_owner(struct page *page, unsigned short order); extern void __set_page_owner(struct page *page, unsigned short order, gfp_t gfp_mask); -extern void __split_page_owner(struct page *page, unsigned int nr); +extern void __split_page_owner(struct page *page, int order); extern void __folio_copy_owner(struct folio *newfolio, struct folio *old); extern void __set_page_owner_migrate_reason(struct page *page, int reason); extern void __dump_page_owner(const struct page *page); @@ -31,10 +31,10 @@ static inline void set_page_owner(struct page *page, __set_page_owner(page, order, gfp_mask); } -static inline void split_page_owner(struct page *page, unsigned int nr) +static inline void split_page_owner(struct page *page, int order) { if (static_branch_unlikely(&page_owner_inited)) - __split_page_owner(page, nr); + __split_page_owner(page, order); } static inline void folio_copy_owner(struct folio *newfolio, struct folio *old) { @@ -60,7 +60,7 @@ static inline void set_page_owner(struct page *page, { } static inline void split_page_owner(struct page *page, - unsigned short order) + int order) { } static inline void folio_copy_owner(struct folio *newfolio, struct folio *folio) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 0cd5fba0923c..f079b02f1f59 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2919,7 +2919,7 @@ static void __split_huge_page(struct page *page, struct list_head *list, unlock_page_lruvec(lruvec); /* Caller disabled irqs, so they are still disabled here */ - split_page_owner(head, nr); + split_page_owner(head, order); /* See comment in __split_huge_page_tail() */ if (PageAnon(head)) { diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 7c927b84e16c..b6e8fe6fed67 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2652,7 +2652,7 @@ void split_page(struct page *page, unsigned int order) for (i = 1; i < (1 << order); i++) set_page_refcounted(page + i); - split_page_owner(page, 1 << order); + split_page_owner(page, order); split_page_memcg(page, order); } EXPORT_SYMBOL_GPL(split_page); @@ -4837,7 +4837,7 @@ static void *make_alloc_exact(unsigned long addr, unsigned int order, struct page *page = virt_to_page((void *)addr); struct page *last = page + nr; - split_page_owner(page, 1 << order); + split_page_owner(page, order); split_page_memcg(page, order); while (page < --last) set_page_refcounted(last); diff --git a/mm/page_owner.c b/mm/page_owner.c index c4f9e5506e93..1319e402c2cf 100644 --- a/mm/page_owner.c +++ b/mm/page_owner.c @@ -292,11 +292,12 @@ void __set_page_owner_migrate_reason(struct page *page, int reason) page_ext_put(page_ext); } -void __split_page_owner(struct page *page, unsigned int nr) +void __split_page_owner(struct page *page, int order) { int i; struct page_ext *page_ext = page_ext_get(page); struct page_owner *page_owner; + unsigned int nr = 1 << order; if (unlikely(!page_ext)) return;