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Howlett" , Vlastimil Babka , Jann Horn , Pedro Falcato , Alexander Viro , Christian Brauner , Jan Kara , Kees Cook , David Hildenbrand , Mike Rapoport , Suren Baghdasaryan , Michal Hocko Cc: ljs@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2058; i=ljs@kernel.org; h=from:subject:message-id; bh=5qOAkI5geB9c2QJT+ZJuYGTf9tB6cnyrWqqOZSHtdhY=; b=owGbwMvMwCV2fu7ZrsZH9SKMp9WSGLKiUj+EWEUlbP0+1Vg9PzH18/bFZY+WbXnNxBkhb6f58 DO79xeVjlIWBjEuBlkxRZbnX8T3B4mEzeu84O8GM4eVCWQIAxenAEzEL5Hhf42d+QeFPzfXNzwX OCbzav4XhxmzD+ycWPsqN/9ejqfpH0VGhkYvs2ZpxW13aw3bdETFBUOjKhYtZJx8Xd5uo1aE97K nzAA= X-Developer-Key: i=ljs@kernel.org; a=openpgp; fpr=E7F417BF5214569E89D04F46CF9DCD8A81E27F14 X-Rspamd-Queue-Id: C4822140013 X-Stat-Signature: 5wqhzmu76g35q4grwh698if6n3c9o4om X-Rspam-User: X-Rspamd-Server: rspam12 X-HE-Tag: 1784309251-397894 X-HE-Meta: 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 Fktu4dQn 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: The mseal implementation is still rather confusing, so tighten things up a little. The only user of do_mseal() outside of the system call is the MMAP_PAGE_ZERO process personality - retain better control over how mseal is utilised by providing mseal_mmap_page_zero() for this instead. The comments are overly long and confusion, so cut them down so they're a lot clearer. Remove confusing mm_struct params (mseal can not be used on remote mm's) and wrap the actual system call logic into the system call declaration. --- v2: * Added tags (thanks everyone!) * Abstracted mm as per David. * Renamed [__]mseal() to [__]mseal_range() as per Pedro. * Moved to reverse xmas tree declarations. * Tweaked commit message for 2/3. v1: https://patch.msgid.link/20260716-mseal-fixups-v1-0-3a9609bf041b@kernel.org To: Andrew Morton To: "Liam R. Howlett" To: Vlastimil Babka To: Jann Horn To: Pedro Falcato To: Alexander Viro To: Christian Brauner To: Jan Kara To: Kees Cook To: David Hildenbrand To: Mike Rapoport To: Suren Baghdasaryan To: Michal Hocko Cc: ljs@kernel.org Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org --- Lorenzo Stoakes (ARM) (3): mm/mseal: remove superfluous comments, fix confusion around mm mm/mseal: limit scope of mseal address zero to address zero mm/mseal: remove further superfluous comments, do_mseal() fs/binfmt_elf.c | 7 +-- include/linux/mm.h | 8 +-- mm/mseal.c | 160 ++++++++++++++++++----------------------------------- 3 files changed, 58 insertions(+), 117 deletions(-) --- base-commit: 59c684a9908d2e6f7a791f7f033eae57ec2b3a61 change-id: 20260716-mseal-fixups-131ad0939de2 Cheers, -- Lorenzo Stoakes (ARM)