From 0bf25cfc9e795ab302ee23550fdeebd2aeedf800 Mon Sep 17 00:00:00 2001 From: Max Kellermann Date: Mon, 1 Sep 2025 22:50:15 +0200 Subject: mm, s390: constify mapping related test/getter functions For improved const-correctness. We select certain test functions which either invoke each other, functions that are already const-ified, or no further functions. It is therefore relatively trivial to const-ify them, which provides a basis for further const-ification further up the call stack. (Even though seemingly unrelated, this also constifies the pointer parameter of mmap_is_legacy() in arch/s390/mm/mmap.c because a copy of the function exists in mm/util.c.) Link: https://lkml.kernel.org/r/20250901205021.3573313-7-max.kellermann@ionos.com Signed-off-by: Max Kellermann Reviewed-by: Vishal Moola (Oracle) Reviewed-by: Lorenzo Stoakes Acked-by: David Hildenbrand Acked-by: Vlastimil Babka Acked-by: Mike Rapoport (Microsoft) Acked-by: Shakeel Butt Cc: Alexander Gordeev Cc: Al Viro Cc: Andreas Larsson Cc: Andy Lutomirski Cc: Axel Rasmussen Cc: Baolin Wang Cc: Borislav Betkov Cc: Christian Borntraeger Cc: Christian Brauner Cc: Christian Zankel Cc: David Rientjes Cc: David S. Miller Cc: Gerald Schaefer Cc: Heiko Carstens Cc: Helge Deller Cc: "H. Peter Anvin" Cc: Hugh Dickins Cc: Ingo Molnar Cc: James Bottomley Cc: Jan Kara Cc: Jocelyn Falempe Cc: Liam Howlett Cc: Mark Brown Cc: Matthew Wilcox (Oracle) Cc: Max Filippov Cc: Michael Ellerman Cc: Michal Hocko Cc: "Nysal Jan K.A" Cc: Oscar Salvador Cc: Peter Zijlstra Cc: Russel King Cc: Suren Baghdasaryan Cc: Sven Schnelle Cc: Thomas Gleinxer Cc: Thomas Huth Cc: Vasily Gorbik Cc: Wei Xu Cc: Yuanchu Xie Signed-off-by: Andrew Morton --- include/linux/mm.h | 6 +++--- include/linux/pagemap.h | 2 +- 2 files changed, 4 insertions(+), 4 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mm.h b/include/linux/mm.h index b3b63058e1a3..221e98bb7689 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1002,7 +1002,7 @@ static inline bool vma_is_shmem(const struct vm_area_struct *vma) { return false static inline bool vma_is_anon_shmem(const struct vm_area_struct *vma) { return false; } #endif -int vma_is_stack_for_current(struct vm_area_struct *vma); +int vma_is_stack_for_current(const struct vm_area_struct *vma); /* flush_tlb_range() takes a vma, not a mm, and can care about flags */ #define TLB_FLUSH_VMA(mm,flags) { .vm_mm = (mm), .vm_flags = (flags) } @@ -2617,7 +2617,7 @@ void folio_add_pin(struct folio *folio); int account_locked_vm(struct mm_struct *mm, unsigned long pages, bool inc); int __account_locked_vm(struct mm_struct *mm, unsigned long pages, bool inc, - struct task_struct *task, bool bypass_rlim); + const struct task_struct *task, bool bypass_rlim); struct kvec; struct page *get_dump_page(unsigned long addr, int *locked); @@ -3380,7 +3380,7 @@ void anon_vma_interval_tree_verify(struct anon_vma_chain *node); avc; avc = anon_vma_interval_tree_iter_next(avc, start, last)) /* mmap.c */ -extern int __vm_enough_memory(struct mm_struct *mm, long pages, int cap_sys_admin); +extern int __vm_enough_memory(const struct mm_struct *mm, long pages, int cap_sys_admin); extern int insert_vm_struct(struct mm_struct *, struct vm_area_struct *); extern void exit_mmap(struct mm_struct *); bool mmap_read_lock_maybe_expand(struct mm_struct *mm, struct vm_area_struct *vma, diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 0d66a252b06f..aec4a11565bc 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -545,7 +545,7 @@ static inline void filemap_nr_thps_dec(struct address_space *mapping) #endif } -struct address_space *folio_mapping(struct folio *); +struct address_space *folio_mapping(const struct folio *folio); /** * folio_flush_mapping - Find the file mapping this folio belongs to. -- cgit v1.2.3