[PATCH 0/2] Btrfs: add interface for writing compressed extents directly

Omar Sandoval
2019-09-04T19:13:36Z

From: Omar Sandoval <osandov@fb.com>

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@fb.com/
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(-)

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2.23.0