[PATCH v9 0/6] Btrfs: implement swap file support

[Omar Sandoval <osandov@osandov.com>]

From: Omar Sandoval <osandov@fb.com>

Hi,

This series implements swap file support for Btrfs.

Changes from v8 [1]:

- Fixed a bug in btrfs_swap_activate() which would cause us to miss some
  file extents if they were merged into one extent map entry.
- Fixed build for !CONFIG_SWAP.
- Changed all error messages to KERN_WARN.
- Unindented long error messages.

I've Cc'd Jon and Al on patch 3 this time, so hopefully we can get an
ack for that one, too.

Thanks!

1: https://www.spinics.net/lists/linux-btrfs/msg82267.html

Omar Sandoval (6):
  mm: split SWP_FILE into SWP_ACTIVATED and SWP_FS
  mm: export add_swap_extent()
  vfs: update swap_{,de}activate documentation
  Btrfs: prevent ioctls from interfering with a swap file
  Btrfs: rename get_chunk_map() and make it non-static
  Btrfs: support swap files

 Documentation/filesystems/Locking |  17 +-
 Documentation/filesystems/vfs.txt |  12 +-
 fs/btrfs/ctree.h                  |  29 +++
 fs/btrfs/dev-replace.c            |   8 +
 fs/btrfs/disk-io.c                |   4 +
 fs/btrfs/inode.c                  | 338 ++++++++++++++++++++++++++++++
 fs/btrfs/ioctl.c                  |  31 ++-
 fs/btrfs/relocation.c             |  18 +-
 fs/btrfs/volumes.c                |  82 ++++++--
 fs/btrfs/volumes.h                |   2 +
 include/linux/swap.h              |  13 +-
 mm/page_io.c                      |   6 +-
 mm/swapfile.c                     |  14 +-
 13 files changed, 523 insertions(+), 51 deletions(-)

-- 
2.19.0