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Howlett" , Vlastimil Babka , Lorenzo Stoakes Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, oliver.sang@intel.com, torvalds@linux-foundation.org, jeffxu@google.com, Michael Ellerman , Pedro Falcato Subject: [PATCH v2 6/6] mm: Remove can_modify_mm() Date: Wed, 7 Aug 2024 22:13:09 +0100 Message-ID: <20240807211309.2729719-7-pedro.falcato@gmail.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240807211309.2729719-1-pedro.falcato@gmail.com> References: <20240807211309.2729719-1-pedro.falcato@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" With no more users in the tree, we can finally remove can_modify_mm(). Signed-off-by: Pedro Falcato --- mm/internal.h | 8 -------- mm/mseal.c | 21 --------------------- 2 files changed, 29 deletions(-) diff --git a/mm/internal.h b/mm/internal.h index 3f9a5c17626..980b613b98c 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -1371,8 +1371,6 @@ static inline bool can_modify_vma(struct vm_area_stru= ct *vma) } =20 =20 -bool can_modify_mm(struct mm_struct *mm, unsigned long start, - unsigned long end); bool can_modify_vma_madv(struct vm_area_struct *vma, int behavior); #else static inline int can_do_mseal(unsigned long flags) @@ -1380,12 +1378,6 @@ static inline int can_do_mseal(unsigned long flags) return -EPERM; } =20 -static inline bool can_modify_mm(struct mm_struct *mm, unsigned long start, - unsigned long end) -{ - return true; -} - static inline bool can_modify_vma_madv(struct vm_area_struct *vma, int beh= avior) { return true; diff --git a/mm/mseal.c b/mm/mseal.c index 6559242dd05..ef4b8a556f7 100644 --- a/mm/mseal.c +++ b/mm/mseal.c @@ -45,27 +45,6 @@ static bool is_ro_anon(struct vm_area_struct *vma) return false; } =20 -/* - * 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 lon= g 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. */ --=20 2.46.0