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-rw-r--r--fs/userfaultfd.c18
-rw-r--r--include/linux/hugetlb.h30
-rw-r--r--include/linux/userfaultfd_k.h18
-rw-r--r--mm/hugetlb.c20
-rw-r--r--mm/userfaultfd.c98
5 files changed, 92 insertions, 92 deletions
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index 881e9c82b9d1..4aedfd98e3f5 100644
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -1756,9 +1756,9 @@ static int userfaultfd_copy(struct userfaultfd_ctx *ctx,
if (uffdio_copy.mode & ~(UFFDIO_COPY_MODE_DONTWAKE|UFFDIO_COPY_MODE_WP))
goto out;
if (mmget_not_zero(ctx->mm)) {
- ret = mcopy_atomic(ctx->mm, uffdio_copy.dst, uffdio_copy.src,
- uffdio_copy.len, &ctx->mmap_changing,
- uffdio_copy.mode);
+ ret = mfill_atomic_copy(ctx->mm, uffdio_copy.dst, uffdio_copy.src,
+ uffdio_copy.len, &ctx->mmap_changing,
+ uffdio_copy.mode);
mmput(ctx->mm);
} else {
return -ESRCH;
@@ -1808,9 +1808,9 @@ static int userfaultfd_zeropage(struct userfaultfd_ctx *ctx,
goto out;
if (mmget_not_zero(ctx->mm)) {
- ret = mfill_zeropage(ctx->mm, uffdio_zeropage.range.start,
- uffdio_zeropage.range.len,
- &ctx->mmap_changing);
+ ret = mfill_atomic_zeropage(ctx->mm, uffdio_zeropage.range.start,
+ uffdio_zeropage.range.len,
+ &ctx->mmap_changing);
mmput(ctx->mm);
} else {
return -ESRCH;
@@ -1918,9 +1918,9 @@ static int userfaultfd_continue(struct userfaultfd_ctx *ctx, unsigned long arg)
goto out;
if (mmget_not_zero(ctx->mm)) {
- ret = mcopy_continue(ctx->mm, uffdio_continue.range.start,
- uffdio_continue.range.len,
- &ctx->mmap_changing);
+ ret = mfill_atomic_continue(ctx->mm, uffdio_continue.range.start,
+ uffdio_continue.range.len,
+ &ctx->mmap_changing);
mmput(ctx->mm);
} else {
return -ESRCH;
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 8fb7d91cd0b1..152434396c48 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -158,13 +158,13 @@ unsigned long hugetlb_total_pages(void);
vm_fault_t hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long address, unsigned int flags);
#ifdef CONFIG_USERFAULTFD
-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);
#endif /* CONFIG_USERFAULTFD */
bool hugetlb_reserve_pages(struct inode *inode, long from, long to,
struct vm_area_struct *vma,
@@ -393,14 +393,14 @@ static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
}
#ifdef CONFIG_USERFAULTFD
-static inline 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)
+static inline 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)
{
BUG();
return 0;
diff --git a/include/linux/userfaultfd_k.h b/include/linux/userfaultfd_k.h
index 0cf8880219da..ac178d810dc7 100644
--- a/include/linux/userfaultfd_k.h
+++ b/include/linux/userfaultfd_k.h
@@ -61,15 +61,15 @@ extern int mfill_atomic_install_pte(struct mm_struct *dst_mm, pmd_t *dst_pmd,
unsigned long dst_addr, struct page *page,
bool newly_allocated, bool wp_copy);
-extern 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);
-extern ssize_t mfill_zeropage(struct mm_struct *dst_mm,
- unsigned long dst_start,
- unsigned long len,
- atomic_t *mmap_changing);
-extern ssize_t mcopy_continue(struct mm_struct *dst_mm, unsigned long dst_start,
- unsigned long len, atomic_t *mmap_changing);
+extern 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);
+extern ssize_t mfill_atomic_zeropage(struct mm_struct *dst_mm,
+ unsigned long dst_start,
+ unsigned long len,
+ atomic_t *mmap_changing);
+extern ssize_t mfill_atomic_continue(struct mm_struct *dst_mm, unsigned long dst_start,
+ unsigned long len, atomic_t *mmap_changing);
extern int mwriteprotect_range(struct mm_struct *dst_mm,
unsigned long start, unsigned long len,
bool enable_wp, atomic_t *mmap_changing);
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,
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2024-12-25 18:17:13 +0000