[PATCH 2/6] userfaultfd: constify VMA parameter of userfaultfd_*() helpers
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COLD40d
From: "Mike Rapoport (Microsoft)" <rppt@kernel.org>
Date: 2026-08-23 12:18:05
Also in:
linux-doc, linux-fsdevel, linux-mm, lkml
Subsystem:
memory management - userfaultfd, the rest · Maintainers:
Andrew Morton, Mike Rapoport, Linus Torvalds
userfaultfd_{missing,wp,minor,rwp}() and userfaultfd_protected() only
read the VMA.
Make their vma parameter const.
No functional change.
Assisted-by: copilot:claude-opus-5
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
---
include/linux/userfaultfd_k.h | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/include/linux/userfaultfd_k.h b/include/linux/userfaultfd_k.h
index a4351cffc60c..3396d270b159 100644
--- a/include/linux/userfaultfd_k.h
+++ b/include/linux/userfaultfd_k.h@@ -204,22 +204,22 @@ static inline bool uffd_disable_fault_around(struct vm_area_struct *vma) VMA_UFFD_MINOR)); } -static inline bool userfaultfd_missing(struct vm_area_struct *vma) +static inline bool userfaultfd_missing(const struct vm_area_struct *vma) { return vma_test_any_mask(vma, VMA_UFFD_MISSING); } -static inline bool userfaultfd_wp(struct vm_area_struct *vma) +static inline bool userfaultfd_wp(const struct vm_area_struct *vma) { return vma_test_any_mask(vma, VMA_UFFD_WP); } -static inline bool userfaultfd_minor(struct vm_area_struct *vma) +static inline bool userfaultfd_minor(const struct vm_area_struct *vma) { return vma_test_any_mask(vma, VMA_UFFD_MINOR); } -static inline bool userfaultfd_rwp(struct vm_area_struct *vma) +static inline bool userfaultfd_rwp(const struct vm_area_struct *vma) { /* * Callers gate PAGE_NONE usage on this; PAGE_NONE is a BUILD_BUG()
@@ -230,7 +230,7 @@ static inline bool userfaultfd_rwp(struct vm_area_struct *vma) return vma_test_single_mask(vma, VMA_UFFD_RWP); } -static inline bool userfaultfd_protected(struct vm_area_struct *vma) +static inline bool userfaultfd_protected(const struct vm_area_struct *vma) { return userfaultfd_wp(vma) || userfaultfd_rwp(vma); }
@@ -353,27 +353,27 @@ static inline bool is_mergeable_vm_userfaultfd_ctx(struct vm_area_struct *vma, return true; } -static inline bool userfaultfd_missing(struct vm_area_struct *vma) +static inline bool userfaultfd_missing(const struct vm_area_struct *vma) { return false; } -static inline bool userfaultfd_wp(struct vm_area_struct *vma) +static inline bool userfaultfd_wp(const struct vm_area_struct *vma) { return false; } -static inline bool userfaultfd_minor(struct vm_area_struct *vma) +static inline bool userfaultfd_minor(const struct vm_area_struct *vma) { return false; } -static inline bool userfaultfd_rwp(struct vm_area_struct *vma) +static inline bool userfaultfd_rwp(const struct vm_area_struct *vma) { return false; } -static inline bool userfaultfd_protected(struct vm_area_struct *vma) +static inline bool userfaultfd_protected(const struct vm_area_struct *vma) { return false; }
--
2.53.0