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
