[PATCH v2 00/15] btrfs dax support

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Sorry, messed up the subject the first time.

This patch set adds support for dax on the BTRFS filesystem.
In order to support for CoW for btrfs, there were changes which had to be
made to the dax handling. The important one is copying blocks into the
same dax device before using them.

I have some doubts: I have put them in patch headers of the individual
patches.

Git: https://github.com/goldwynr/linux/tree/btrfs-dax

Changes since V1:
- use iomap instead of redoing everything in btrfs
- support for mmap writeprotecting on snapshotting


 fs/btrfs/Makefile            |    1 
 fs/btrfs/ctree.h             |   32 +++++-
 fs/btrfs/dax.c               |  225 +++++++++++++++++++++++++++++++++++++++++--
 fs/btrfs/disk-io.c           |    4 
 fs/btrfs/file.c              |   34 +++++-
 fs/btrfs/inode.c             |  114 ++++++++++++++++-----
 fs/btrfs/ioctl.c             |   31 +++++
 fs/btrfs/send.c              |    4 
 fs/btrfs/super.c             |   26 ++++
 fs/dax.c                     |  164 ++++++++++++++++++++++++++++---
 fs/iomap.c                   |    9 -
 fs/ocfs2/file.c              |    2 
 fs/read_write.c              |    9 +
 fs/xfs/xfs_reflink.c         |    2 
 include/linux/dax.h          |   13 +-
 include/linux/fs.h           |    4 
 include/linux/iomap.h        |    9 +
 include/trace/events/btrfs.h |   56 ++++++++++
 18 files changed, 662 insertions(+), 77 deletions(-)

-- 
Goldwyn



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