diff options
Diffstat (limited to 'mm')
-rw-r--r-- | mm/hugetlb.c | 20 | ||||
-rw-r--r-- | mm/userfaultfd.c | 98 |
2 files changed, 59 insertions, 59 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 9122e50ae02a..b1e474aa2fc5 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -6156,17 +6156,17 @@ out_mutex: #ifdef CONFIG_USERFAULTFD /* - * Used by userfaultfd UFFDIO_COPY. Based on mcopy_atomic_pte with - * modifications for huge pages. + * Used by userfaultfd UFFDIO_* ioctls. Based on userfaultfd's mfill_atomic_pte + * with modifications for hugetlb pages. */ -int hugetlb_mcopy_atomic_pte(struct mm_struct *dst_mm, - pte_t *dst_pte, - struct vm_area_struct *dst_vma, - unsigned long dst_addr, - unsigned long src_addr, - enum mcopy_atomic_mode mode, - struct page **pagep, - bool wp_copy) +int hugetlb_mfill_atomic_pte(struct mm_struct *dst_mm, + pte_t *dst_pte, + struct vm_area_struct *dst_vma, + unsigned long dst_addr, + unsigned long src_addr, + enum mcopy_atomic_mode mode, + struct page **pagep, + bool wp_copy) { bool is_continue = (mode == MCOPY_ATOMIC_CONTINUE); struct hstate *h = hstate_vma(dst_vma); diff --git a/mm/userfaultfd.c b/mm/userfaultfd.c index 23cabd02ac52..874379ce271f 100644 --- a/mm/userfaultfd.c +++ b/mm/userfaultfd.c @@ -127,13 +127,13 @@ out_unlock: return ret; } -static int mcopy_atomic_pte(struct mm_struct *dst_mm, - pmd_t *dst_pmd, - struct vm_area_struct *dst_vma, - unsigned long dst_addr, - unsigned long src_addr, - struct page **pagep, - bool wp_copy) +static int mfill_atomic_pte_copy(struct mm_struct *dst_mm, + pmd_t *dst_pmd, + struct vm_area_struct *dst_vma, + unsigned long dst_addr, + unsigned long src_addr, + struct page **pagep, + bool wp_copy) { void *page_kaddr; int ret; @@ -204,10 +204,10 @@ out_release: goto out; } -static int mfill_zeropage_pte(struct mm_struct *dst_mm, - pmd_t *dst_pmd, - struct vm_area_struct *dst_vma, - unsigned long dst_addr) +static int mfill_atomic_pte_zeropage(struct mm_struct *dst_mm, + pmd_t *dst_pmd, + struct vm_area_struct *dst_vma, + unsigned long dst_addr) { pte_t _dst_pte, *dst_pte; spinlock_t *ptl; @@ -240,11 +240,11 @@ out_unlock: } /* Handles UFFDIO_CONTINUE for all shmem VMAs (shared or private). */ -static int mcontinue_atomic_pte(struct mm_struct *dst_mm, - pmd_t *dst_pmd, - struct vm_area_struct *dst_vma, - unsigned long dst_addr, - bool wp_copy) +static int mfill_atomic_pte_continue(struct mm_struct *dst_mm, + pmd_t *dst_pmd, + struct vm_area_struct *dst_vma, + unsigned long dst_addr, + bool wp_copy) { struct inode *inode = file_inode(dst_vma->vm_file); pgoff_t pgoff = linear_page_index(dst_vma, dst_addr); @@ -307,10 +307,10 @@ static pmd_t *mm_alloc_pmd(struct mm_struct *mm, unsigned long address) #ifdef CONFIG_HUGETLB_PAGE /* - * __mcopy_atomic processing for HUGETLB vmas. Note that this routine is + * mfill_atomic processing for HUGETLB vmas. Note that this routine is * called with mmap_lock held, it will release mmap_lock before returning. */ -static __always_inline ssize_t __mcopy_atomic_hugetlb(struct mm_struct *dst_mm, +static __always_inline ssize_t mfill_atomic_hugetlb(struct mm_struct *dst_mm, struct vm_area_struct *dst_vma, unsigned long dst_start, unsigned long src_start, @@ -411,7 +411,7 @@ retry: goto out_unlock; } - err = hugetlb_mcopy_atomic_pte(dst_mm, dst_pte, dst_vma, + err = hugetlb_mfill_atomic_pte(dst_mm, dst_pte, dst_vma, dst_addr, src_addr, mode, &page, wp_copy); @@ -463,7 +463,7 @@ out: } #else /* !CONFIG_HUGETLB_PAGE */ /* fail at build time if gcc attempts to use this */ -extern ssize_t __mcopy_atomic_hugetlb(struct mm_struct *dst_mm, +extern ssize_t mfill_atomic_hugetlb(struct mm_struct *dst_mm, struct vm_area_struct *dst_vma, unsigned long dst_start, unsigned long src_start, @@ -484,8 +484,8 @@ static __always_inline ssize_t mfill_atomic_pte(struct mm_struct *dst_mm, ssize_t err; if (mode == MCOPY_ATOMIC_CONTINUE) { - return mcontinue_atomic_pte(dst_mm, dst_pmd, dst_vma, dst_addr, - wp_copy); + return mfill_atomic_pte_continue(dst_mm, dst_pmd, dst_vma, + dst_addr, wp_copy); } /* @@ -500,11 +500,11 @@ static __always_inline ssize_t mfill_atomic_pte(struct mm_struct *dst_mm, */ if (!(dst_vma->vm_flags & VM_SHARED)) { if (mode == MCOPY_ATOMIC_NORMAL) - err = mcopy_atomic_pte(dst_mm, dst_pmd, dst_vma, - dst_addr, src_addr, page, - wp_copy); + err = mfill_atomic_pte_copy(dst_mm, dst_pmd, dst_vma, + dst_addr, src_addr, page, + wp_copy); else - err = mfill_zeropage_pte(dst_mm, dst_pmd, + err = mfill_atomic_pte_zeropage(dst_mm, dst_pmd, dst_vma, dst_addr); } else { err = shmem_mfill_atomic_pte(dst_mm, dst_pmd, dst_vma, @@ -516,13 +516,13 @@ static __always_inline ssize_t mfill_atomic_pte(struct mm_struct *dst_mm, return err; } -static __always_inline ssize_t __mcopy_atomic(struct mm_struct *dst_mm, - unsigned long dst_start, - unsigned long src_start, - unsigned long len, - enum mcopy_atomic_mode mcopy_mode, - atomic_t *mmap_changing, - __u64 mode) +static __always_inline ssize_t mfill_atomic(struct mm_struct *dst_mm, + unsigned long dst_start, + unsigned long src_start, + unsigned long len, + enum mcopy_atomic_mode mcopy_mode, + atomic_t *mmap_changing, + __u64 mode) { struct vm_area_struct *dst_vma; ssize_t err; @@ -588,9 +588,9 @@ retry: * If this is a HUGETLB vma, pass off to appropriate routine */ if (is_vm_hugetlb_page(dst_vma)) - return __mcopy_atomic_hugetlb(dst_mm, dst_vma, dst_start, - src_start, len, mcopy_mode, - wp_copy); + return mfill_atomic_hugetlb(dst_mm, dst_vma, dst_start, + src_start, len, mcopy_mode, + wp_copy); if (!vma_is_anonymous(dst_vma) && !vma_is_shmem(dst_vma)) goto out_unlock; @@ -688,26 +688,26 @@ out: return copied ? copied : err; } -ssize_t mcopy_atomic(struct mm_struct *dst_mm, unsigned long dst_start, - unsigned long src_start, unsigned long len, - atomic_t *mmap_changing, __u64 mode) +ssize_t mfill_atomic_copy(struct mm_struct *dst_mm, unsigned long dst_start, + unsigned long src_start, unsigned long len, + atomic_t *mmap_changing, __u64 mode) { - return __mcopy_atomic(dst_mm, dst_start, src_start, len, - MCOPY_ATOMIC_NORMAL, mmap_changing, mode); + return mfill_atomic(dst_mm, dst_start, src_start, len, + MCOPY_ATOMIC_NORMAL, mmap_changing, mode); } -ssize_t mfill_zeropage(struct mm_struct *dst_mm, unsigned long start, - unsigned long len, atomic_t *mmap_changing) +ssize_t mfill_atomic_zeropage(struct mm_struct *dst_mm, unsigned long start, + unsigned long len, atomic_t *mmap_changing) { - return __mcopy_atomic(dst_mm, start, 0, len, MCOPY_ATOMIC_ZEROPAGE, - mmap_changing, 0); + return mfill_atomic(dst_mm, start, 0, len, MCOPY_ATOMIC_ZEROPAGE, + mmap_changing, 0); } -ssize_t mcopy_continue(struct mm_struct *dst_mm, unsigned long start, - unsigned long len, atomic_t *mmap_changing) +ssize_t mfill_atomic_continue(struct mm_struct *dst_mm, unsigned long start, + unsigned long len, atomic_t *mmap_changing) { - return __mcopy_atomic(dst_mm, start, 0, len, MCOPY_ATOMIC_CONTINUE, - mmap_changing, 0); + return mfill_atomic(dst_mm, start, 0, len, MCOPY_ATOMIC_CONTINUE, + mmap_changing, 0); } long uffd_wp_range(struct mm_struct *dst_mm, struct vm_area_struct *dst_vma, |