[PATCH RFC v4 03/12] mm: rename get_user_page_vma_remote() to get_user_page_lookup_vma()

[PATCH RFC v4 03/12] mm: rename get_user_page_vma_remote() to get_user_page_lookup_vma()

[Rik van Riel]

get_user_page_vma_remote() faults in the page at @addr in a remote mm and
also looks up the VMA that covers it, handing both back to the caller.

This cleans up the namespace for adding a get_user_page_vma() variant where
the caller already has the vma.

No functional change intended.

Assisted-by: Claude:claude-opus-4.8
Acked-by: Usama Arif <usama.arif@linux.dev>
Signed-off-by: Rik van Riel <riel@surriel.com>
---
 arch/arm64/kernel/mte.c   | 2 +-
 arch/x86/kernel/uprobes.c | 2 +-
 include/linux/mm.h        | 2 +-
 mm/memory.c               | 4 ++--
 mm/rmap.c                 | 2 +-
 5 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/kernel/mte.c b/arch/arm64/kernel/mte.c
index 1a9aad6ef22a..7a6ecc3d9294 100644
--- a/arch/arm64/kernel/mte.c
+++ b/arch/arm64/kernel/mte.c
@@ -459,7 +459,7 @@ static int __access_remote_tags(struct mm_struct *mm, unsigned long addr,
 		struct vm_area_struct *vma;
 		unsigned long tags, offset;
 		void *maddr;
-		struct page *page = get_user_page_vma_remote(mm, addr,
+		struct page *page = get_user_page_lookup_vma(mm, addr,
 							     gup_flags, &vma);
 		struct folio *folio;
 
diff --git a/arch/x86/kernel/uprobes.c b/arch/x86/kernel/uprobes.c
index 3af979fb41d3..329efac0cfb3 100644
--- a/arch/x86/kernel/uprobes.c
+++ b/arch/x86/kernel/uprobes.c
@@ -1036,7 +1036,7 @@ static int copy_from_vaddr(struct mm_struct *mm, unsigned long vaddr, void *dst,
 	struct vm_area_struct *vma;
 	struct page *page;
 
-	page = get_user_page_vma_remote(mm, vaddr, gup_flags, &vma);
+	page = get_user_page_lookup_vma(mm, vaddr, gup_flags, &vma);
 	if (IS_ERR(page))
 		return PTR_ERR(page);
 	uprobe_copy_from_page(page, vaddr, dst, len);
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 485df9c2dbdd..24ead14b4790 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -3238,7 +3238,7 @@ long pin_user_pages_remote(struct mm_struct *mm,
 /*
  * Retrieves a single page alongside its VMA. Does not support FOLL_NOWAIT.
  */
-static inline struct page *get_user_page_vma_remote(struct mm_struct *mm,
+static inline struct page *get_user_page_lookup_vma(struct mm_struct *mm,
 						    unsigned long addr,
 						    int gup_flags,
 						    struct vm_area_struct **vmap)
diff --git a/mm/memory.c b/mm/memory.c
index ff338c2abe92..3b86eeaf084f 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -7039,7 +7039,7 @@ static int __access_remote_vm(struct mm_struct *mm, unsigned long addr,
 		void *maddr;
 		struct folio *folio;
 		struct vm_area_struct *vma = NULL;
-		struct page *page = get_user_page_vma_remote(mm, addr,
+		struct page *page = get_user_page_lookup_vma(mm, addr,
 							     gup_flags, &vma);
 
 		if (IS_ERR(page)) {
@@ -7167,7 +7167,7 @@ static int __copy_remote_vm_str(struct mm_struct *mm, unsigned long addr,
 		struct page *page;
 		struct vm_area_struct *vma = NULL;
 
-		page = get_user_page_vma_remote(mm, addr, gup_flags, &vma);
+		page = get_user_page_lookup_vma(mm, addr, gup_flags, &vma);
 		if (IS_ERR(page)) {
 			/*
 			 * Treat as a total failure for now until we decide how
diff --git a/mm/rmap.c b/mm/rmap.c
index 1c77d5dc06e9..b36f2e219b8f 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -2838,7 +2838,7 @@ struct page *make_device_exclusive(struct mm_struct *mm, unsigned long addr,
 	 * (non-device-exclusive) PTE and issue a MMU_NOTIFY_EXCLUSIVE.
 	 */
 retry:
-	page = get_user_page_vma_remote(mm, addr,
+	page = get_user_page_lookup_vma(mm, addr,
 					FOLL_GET | FOLL_WRITE | FOLL_SPLIT_PMD,
 					&vma);
 	if (IS_ERR(page))
-- 
2.53.0-Meta