From: Omar Sandoval <osandov@xxxxxx> Hi, This is an update of my RFC series [1]. Patch 1 is a VFS patch to export some permission checks. Patch 2 is the actual change. Changes from the RFC: - Rebased on misc-next, which now has the cleanups from patches 1-3. - Generalized the interface to "raw writes" so that we can support, e.g., encrypted writes in the future. Note that I kept the compat ioctl implementation the same based on the discussion in [2]. 1: https://lore.kernel.org/linux-btrfs/cover.1565900769.git.osandov@xxxxxx/ 2: https://lore.kernel.org/linux-btrfs/20190903171458.GA7452@vader/ Omar Sandoval (2): fs: export rw_verify_area() btrfs: add ioctl for directly writing compressed data fs/btrfs/compression.c | 6 +- fs/btrfs/compression.h | 14 +-- fs/btrfs/ctree.h | 6 ++ fs/btrfs/file.c | 13 ++- fs/btrfs/inode.c | 192 ++++++++++++++++++++++++++++++++++++- fs/btrfs/ioctl.c | 95 ++++++++++++++++++ fs/internal.h | 5 - fs/read_write.c | 1 + include/linux/fs.h | 1 + include/uapi/linux/btrfs.h | 69 +++++++++++++ 10 files changed, 382 insertions(+), 20 deletions(-) -- 2.23.0
