[PATCH v3 13/34] mm: Create ptdesc equivalents for pgtable_{pte,pmd}_page_{ctor,dtor}
From: Vishal Moola (Oracle) <hidden>
Date: 2023-05-31 22:46:08
Also in:
kvm, linux-arch, linux-arm-kernel, linux-mips, linux-riscv, linux-s390, linux-sh, linux-um, linuxppc-dev, loongarch, sparclinux, xen-devel
Subsystem:
memory management - core, the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
Creates pagetable_pte_ctor(), pagetable_pmd_ctor(), pagetable_pte_dtor(), and pagetable_pmd_dtor() and make the original pgtable constructor/destructors wrappers. Signed-off-by: Vishal Moola (Oracle) <redacted> --- include/linux/mm.h | 56 ++++++++++++++++++++++++++++++++++------------ 1 file changed, 42 insertions(+), 14 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 72725aa6c30d..2c7d27348ea9 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h@@ -2867,20 +2867,34 @@ static inline bool ptlock_init(struct ptdesc *ptdesc) { return true; } static inline void ptlock_free(struct ptdesc *ptdesc) {} #endif /* USE_SPLIT_PTE_PTLOCKS */ -static inline bool pgtable_pte_page_ctor(struct page *page) +static inline bool pagetable_pte_ctor(struct ptdesc *ptdesc) { - if (!ptlock_init(page_ptdesc(page))) + struct folio *folio = ptdesc_folio(ptdesc); + + if (!ptlock_init(ptdesc)) return false; - __SetPageTable(page); - inc_lruvec_page_state(page, NR_PAGETABLE); + __folio_set_table(folio); + lruvec_stat_add_folio(folio, NR_PAGETABLE); return true; } +static inline bool pgtable_pte_page_ctor(struct page *page) +{ + return pagetable_pte_ctor(page_ptdesc(page)); +} + +static inline void pagetable_pte_dtor(struct ptdesc *ptdesc) +{ + struct folio *folio = ptdesc_folio(ptdesc); + + ptlock_free(ptdesc); + __folio_clear_table(folio); + lruvec_stat_sub_folio(folio, NR_PAGETABLE); +} + static inline void pgtable_pte_page_dtor(struct page *page) { - ptlock_free(page_ptdesc(page)); - __ClearPageTable(page); - dec_lruvec_page_state(page, NR_PAGETABLE); + pagetable_pte_dtor(page_ptdesc(page)); } #define pte_offset_map_lock(mm, pmd, address, ptlp) \
@@ -2962,20 +2976,34 @@ static inline spinlock_t *pmd_lock(struct mm_struct *mm, pmd_t *pmd) return ptl; } -static inline bool pgtable_pmd_page_ctor(struct page *page) +static inline bool pagetable_pmd_ctor(struct ptdesc *ptdesc) { - if (!pmd_ptlock_init(page_ptdesc(page))) + struct folio *folio = ptdesc_folio(ptdesc); + + if (!pmd_ptlock_init(ptdesc)) return false; - __SetPageTable(page); - inc_lruvec_page_state(page, NR_PAGETABLE); + __folio_set_table(folio); + lruvec_stat_add_folio(folio, NR_PAGETABLE); return true; } +static inline bool pgtable_pmd_page_ctor(struct page *page) +{ + return pagetable_pmd_ctor(page_ptdesc(page)); +} + +static inline void pagetable_pmd_dtor(struct ptdesc *ptdesc) +{ + struct folio *folio = ptdesc_folio(ptdesc); + + pmd_ptlock_free(ptdesc); + __folio_clear_table(folio); + lruvec_stat_sub_folio(folio, NR_PAGETABLE); +} + static inline void pgtable_pmd_page_dtor(struct page *page) { - pmd_ptlock_free(page_ptdesc(page)); - __ClearPageTable(page); - dec_lruvec_page_state(page, NR_PAGETABLE); + pagetable_pmd_dtor(page_ptdesc(page)); } /*
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2.40.1