diff options
| author | Pedro Falcato <pedro.falcato@gmail.com> | 2024-08-17 01:18:33 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-09-03 21:15:42 -0700 |
| commit | 5b3db2b812a1f86dfab587324d198a5d10c7a5cf (patch) | |
| tree | c3ad8ae58765adb24e0f6c18be851a4c9182730c /mm | |
| parent | 23c57d1fa2b9530e38f7964b4e457fed5a7a0ae8 (diff) | |
mm: remove can_modify_mm()
With no more users in the tree, we can finally remove can_modify_mm().
Link: https://lkml.kernel.org/r/20240817-mseal-depessimize-v3-6-d8d2e037df30@gmail.com
Signed-off-by: Pedro Falcato <pedro.falcato@gmail.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Jeff Xu <jeffxu@chromium.org>
Cc: Kees Cook <kees@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/internal.h | 14 | ||||
| -rw-r--r-- | mm/mseal.c | 21 |
2 files changed, 0 insertions, 35 deletions
diff --git a/mm/internal.h b/mm/internal.h index 241cf46a19f5..82fb9f1b0cd4 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -1359,25 +1359,11 @@ static inline int can_do_mseal(unsigned long flags) return 0; } -bool can_modify_mm(struct mm_struct *mm, unsigned long start, - unsigned long end); #else static inline int can_do_mseal(unsigned long flags) { return -EPERM; } - -static inline bool can_modify_mm(struct mm_struct *mm, unsigned long start, - unsigned long end) -{ - return true; -} - -static inline bool can_modify_mm_madv(struct mm_struct *mm, unsigned long start, - unsigned long end, int behavior) -{ - return true; -} #endif #ifdef CONFIG_SHRINKER_DEBUG diff --git a/mm/mseal.c b/mm/mseal.c index fdd1666344fa..28cd17d7aaf2 100644 --- a/mm/mseal.c +++ b/mm/mseal.c @@ -54,27 +54,6 @@ static bool is_ro_anon(struct vm_area_struct *vma) } /* - * Check if the vmas of a memory range are allowed to be modified. - * the memory ranger can have a gap (unallocated memory). - * return true, if it is allowed. - */ -bool can_modify_mm(struct mm_struct *mm, unsigned long start, unsigned long end) -{ - struct vm_area_struct *vma; - - VMA_ITERATOR(vmi, mm, start); - - /* going through each vma to check. */ - for_each_vma_range(vmi, vma, end) { - if (unlikely(!can_modify_vma(vma))) - return false; - } - - /* Allow by default. */ - return true; -} - -/* * Check if a vma is allowed to be modified by madvise. */ bool can_modify_vma_madv(struct vm_area_struct *vma, int behavior) |