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[172.10.233.147]) by smtp.gmail.com with ESMTPSA id b204sm490194qkg.76.2021.07.30.00.22.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 30 Jul 2021 00:22:55 -0700 (PDT) Date: Fri, 30 Jul 2021 00:22:41 -0700 (PDT) From: Hugh Dickins X-X-Sender: hugh@ripple.anvils To: Andrew Morton cc: Hugh Dickins , Shakeel Butt , "Kirill A. Shutemov" , Yang Shi , Miaohe Lin , Mike Kravetz , Michal Hocko , Rik van Riel , Christoph Hellwig , Matthew Wilcox , "Eric W. Biederman" , Alexey Gladkov , Chris Wilson , Matthew Auld , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 00/16] tmpfs: HUGEPAGE and MEM_LOCK fcntls and memfds Message-ID: <2862852d-badd-7486-3a8e-c5ea9666d6fb@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org A series of HUGEPAGE and MEM_LOCK tmpfs fcntls and memfd_create flags, after fixes (not essential for stable) and cleanups in related areas. Against 5.14-rc3: currently no conflict with linux-next or mmotm. 01/16 huge tmpfs: fix fallocate(vanilla) advance over huge pages 02/16 huge tmpfs: fix split_huge_page() after FALLOC_FL_KEEP_SIZE 03/16 huge tmpfs: remove shrinklist addition from shmem_setattr() 04/16 huge tmpfs: revert shmem's use of transhuge_vma_enabled() 05/16 huge tmpfs: move shmem_huge_enabled() upwards 06/16 huge tmpfs: shmem_is_huge(vma, inode, index) 07/16 memfd: memfd_create(name, MFD_HUGEPAGE) for shmem huge pages 08/16 huge tmpfs: fcntl(fd, F_HUGEPAGE) and fcntl(fd, F_NOHUGEPAGE) 09/16 huge tmpfs: decide stat.st_blksize by shmem_is_huge() 10/16 tmpfs: fcntl(fd, F_MEM_LOCK) to memlock a tmpfs file 11/16 tmpfs: fcntl(fd, F_MEM_LOCKED) to test if memlocked 12/16 tmpfs: refuse memlock when fallocated beyond i_size 13/16 mm: bool user_shm_lock(loff_t size, struct ucounts *) 14/16 mm: user_shm_lock(,,getuc) and user_shm_unlock(,,putuc) 15/16 tmpfs: permit changing size of memlocked file 16/16 memfd: memfd_create(name, MFD_MEM_LOCK) for memlocked shmem fs/fcntl.c | 8 fs/hugetlbfs/inode.c | 4 include/linux/mm.h | 4 include/linux/shmem_fs.h | 31 ++- include/uapi/linux/fcntl.h | 17 + include/uapi/linux/memfd.h | 4 ipc/shm.c | 4 mm/huge_memory.c | 6 mm/khugepaged.c | 2 mm/memfd.c | 27 ++ mm/mlock.c | 19 - mm/shmem.c | 397 ++++++++++++++++++++++++++------------- 12 files changed, 370 insertions(+), 153 deletions(-) Hugh