[PATCH v2 2/6] mm: change to return bool for ptep_clear_flush_young()/clear_flush_young_ptes()
Baolin Wang <[email protected]>
| Newsgroups | org.kernel.vger.linux-parisc,org.infradead.lists.linux-arm-kernel,org.infradead.lists.linux-riscv,org.kernel.vger.kvm,org.kernel.vger.linux-kernel,org.kernel.vger.linux-s390,org.kvack.linux-mm,org.ozlabs.lists.linuxppc-dev |
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| Message-ID | <24af5144b96103631594501f77d4525f2475c1be.1774075004.git.baolin.wang@linux.alibaba.com> |
The ptep_clear_flush_young() and clear_flush_young_ptes() are used to clear the young flag and flush the TLB, returning whether the young flag was set. Change the return type to bool to make the intention clearer. Reviewed-by: Ritesh Harjani (IBM) <[email protected]> Reviewed-by: Lorenzo Stoakes (Oracle) <[email protected]> Signed-off-by: Baolin Wang <[email protected]> --- arch/arm64/include/asm/pgtable.h | 17 ++++++++--------- arch/arm64/mm/contpte.c | 7 +++---- arch/parisc/include/asm/pgtable.h | 2 +- arch/parisc/kernel/cache.c | 8 ++++---- arch/powerpc/include/asm/nohash/64/pgtable.h | 2 +- arch/riscv/include/asm/pgtable.h | 4 ++-- arch/s390/include/asm/pgtable.h | 4 ++-- arch/x86/include/asm/pgtable.h | 4 ++-- arch/x86/mm/pgtable.c | 4 ++-- include/linux/pgtable.h | 8 ++++---- mm/pgtable-generic.c | 7 ++++--- 11 files changed, 33 insertions(+), 34 deletions(-) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 79596cc05dcb..1009f719b157 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -1298,10 +1298,10 @@ static inline bool __ptep_test_and_clear_young(struct vm_area_struct *vma, return pte_young(pte); } -static inline int __ptep_clear_flush_young(struct vm_area_struct *vma, - unsigned long address, pte_t *ptep) +static inline bool __ptep_clear_flush_young(struct vm_area_struct *vma, + unsigned long address, pte_t *ptep) { - int young = __ptep_test_and_clear_young(vma, address, ptep); + bool young = __ptep_test_and_clear_young(vma, address, ptep); if (young) { /* @@ -1647,7 +1647,7 @@ extern pte_t contpte_get_and_clear_full_ptes(struct mm_struct *mm, unsigned int nr, int full); bool contpte_test_and_clear_young_ptes(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep, unsigned int nr); -int contpte_clear_flush_young_ptes(struct vm_area_struct *vma, +bool contpte_clear_flush_young_ptes(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep, unsigned int nr); extern void contpte_wrprotect_ptes(struct mm_struct *mm, unsigned long addr, pte_t *ptep, unsigned int nr); @@ -1829,8 +1829,8 @@ static inline bool ptep_test_and_clear_young(struct vm_area_struct *vma, } #define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH -static inline int ptep_clear_flush_young(struct vm_area_struct *vma, - unsigned long addr, pte_t *ptep) +static inline bool ptep_clear_flush_young(struct vm_area_struct *vma, + unsigned long addr, pte_t *ptep) { pte_t orig_pte = __ptep_get(ptep); @@ -1841,9 +1841,8 @@ static inline int ptep_clear_flush_young(struct vm_area_struct *vma, } #define clear_flush_young_ptes clear_flush_young_ptes -static inline int clear_flush_young_ptes(struct vm_area_struct *vma, - unsigned long addr, pte_t *ptep, - unsigned int nr) +static inline bool clear_flush_young_ptes(struct vm_area_struct *vma, + unsigned long addr, pte_t *ptep, unsigned int nr) { if (likely(nr == 1 && !pte_cont(__ptep_get(ptep)))) return __ptep_clear_flush_young(vma, addr, ptep); diff --git a/arch/arm64/mm/contpte.c b/arch/arm64/mm/contpte.c index a31cae78f712..2dc1b8ad71e8 100644 --- a/arch/arm64/mm/contpte.c +++ b/arch/arm64/mm/contpte.c @@ -534,11 +534,10 @@ bool contpte_test_and_clear_young_ptes(struct vm_area_struct *vma, } EXPORT_SYMBOL_GPL(contpte_test_and_clear_young_ptes); -int contpte_clear_flush_young_ptes(struct vm_area_struct *vma, - unsigned long addr, pte_t *ptep, - unsigned int nr) +bool contpte_clear_flush_young_ptes(struct vm_area_struct *vma, + unsigned long addr, pte_t *ptep, unsigned int nr) { - int young; + bool young; young = contpte_test_and_clear_young_ptes(vma, addr, ptep, nr); diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h index 7097c785f690..467b8547ac8b 100644 --- a/arch/parisc/include/asm/pgtable.h +++ b/arch/parisc/include/asm/pgtable.h @@ -451,7 +451,7 @@ static inline bool ptep_test_and_clear_young(struct vm_area_struct *vma, return true; } -int ptep_clear_flush_young(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep); +bool ptep_clear_flush_young(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep); pte_t ptep_clear_flush(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep); struct mm_struct; diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c index 4c5240d3a3c7..349b2bf89bb2 100644 --- a/arch/parisc/kernel/cache.c +++ b/arch/parisc/kernel/cache.c @@ -781,18 +781,18 @@ void flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned lon __flush_cache_page(vma, vmaddr, PFN_PHYS(page_to_pfn(page))); } -int ptep_clear_flush_young(struct vm_area_struct *vma, unsigned long addr, - pte_t *ptep) +bool ptep_clear_flush_young(struct vm_area_struct *vma, + unsigned long addr, pte_t *ptep) { pte_t pte = ptep_get(ptep); if (!pte_young(pte)) - return 0; + return false; set_pte(ptep, pte_mkold(pte)); #if CONFIG_FLUSH_PAGE_ACCESSED __flush_cache_page(vma, addr, PFN_PHYS(pte_pfn(pte))); #endif - return 1; + return true; } /* diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h b/arch/powerpc/include/asm/nohash/64/pgtable.h index 2deb955b7bc8..661eb3820d12 100644 --- a/arch/powerpc/include/asm/nohash/64/pgtable.h +++ b/arch/powerpc/include/asm/nohash/64/pgtable.h @@ -155,7 +155,7 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, #define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH #define ptep_clear_flush_young(__vma, __address, __ptep) \ ({ \ - int __young = ptep_test_and_clear_young(__vma, __address, __ptep);\ + bool __young = ptep_test_and_clear_young(__vma, __address, __ptep);\ __young; \ }) diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index 643d12481b02..b9dacfc280b1 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -695,8 +695,8 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, } #define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH -static inline int ptep_clear_flush_young(struct vm_area_struct *vma, - unsigned long address, pte_t *ptep) +static inline bool ptep_clear_flush_young(struct vm_area_struct *vma, + unsigned long address, pte_t *ptep) { /* * This comment is borrowed from x86, but applies equally to RISC-V: diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index ef4748ee3a2b..ac74b5076d8f 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -1174,8 +1174,8 @@ static inline bool ptep_test_and_clear_young(struct vm_area_struct *vma, } #define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH -static inline int ptep_clear_flush_young(struct vm_area_struct *vma, - unsigned long address, pte_t *ptep) +static inline bool ptep_clear_flush_young(struct vm_area_struct *vma, + unsigned long address, pte_t *ptep) { return ptep_test_and_clear_young(vma, address, ptep); } diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index 1d86fb33239f..3993657e0a35 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -1236,8 +1236,8 @@ bool ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep); #define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH -extern int ptep_clear_flush_young(struct vm_area_struct *vma, - unsigned long address, pte_t *ptep); +bool ptep_clear_flush_young(struct vm_area_struct *vma, + unsigned long address, pte_t *ptep); #define __HAVE_ARCH_PTEP_GET_AND_CLEAR static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index 5ee38dda9124..1348384a3bb9 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -483,8 +483,8 @@ int pudp_test_and_clear_young(struct vm_area_struct *vma, } #endif -int ptep_clear_flush_young(struct vm_area_struct *vma, - unsigned long address, pte_t *ptep) +bool ptep_clear_flush_young(struct vm_area_struct *vma, + unsigned long address, pte_t *ptep) { /* * On x86 CPUs, clearing the accessed bit without a TLB flush diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h index 8e75dc9f7932..99450a3b0705 100644 --- a/include/linux/pgtable.h +++ b/include/linux/pgtable.h @@ -531,8 +531,8 @@ static inline int pmdp_test_and_clear_young(struct vm_area_struct *vma, #endif #ifndef __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH -int ptep_clear_flush_young(struct vm_area_struct *vma, - unsigned long address, pte_t *ptep); +bool ptep_clear_flush_young(struct vm_area_struct *vma, + unsigned long address, pte_t *ptep); #endif #ifndef __HAVE_ARCH_PMDP_CLEAR_YOUNG_FLUSH @@ -1086,10 +1086,10 @@ static inline void wrprotect_ptes(struct mm_struct *mm, unsigned long addr, * Context: The caller holds the page table lock. The PTEs map consecutive * pages that belong to the same folio. The PTEs are all in the same PMD. */ -static inline int clear_flush_young_ptes(struct vm_area_struct *vma, +static inline bool clear_flush_young_ptes(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep, unsigned int nr) { - int young = 0; + bool young = false; for (;;) { young |= ptep_clear_flush_young(vma, addr, ptep); diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c index af7966169d69..db0ee918b08a 100644 --- a/mm/pgtable-generic.c +++ b/mm/pgtable-generic.c @@ -81,10 +81,11 @@ int ptep_set_access_flags(struct vm_area_struct *vma, #endif #ifndef __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH -int ptep_clear_flush_young(struct vm_area_struct *vma, - unsigned long address, pte_t *ptep) +bool ptep_clear_flush_young(struct vm_area_struct *vma, + unsigned long address, pte_t *ptep) { - int young; + bool young; + young = ptep_test_and_clear_young(vma, address, ptep); if (young) flush_tlb_page(vma, address); -- 2.47.3