[PATCH RFC 0/2] xfs: refactor ordered buffer logging code

[Brian Foster <bfoster@redhat.com>]

Hi all,

Here's an initial refactoring based on the discussion on Alex's empty
xattr leaf buffer holding patch [1]. These patches split off some of
xfs_trans_log_buf() into a new helper and update xfs_trans_ordered_buf()
to use it and thus eliminate the need to log dirty ranges on ordered
buffers. The secondary purpose here is to create a function that we can
call from deferred ops processing to relog an already dirty/held buffer
across transaction rolls.

Note that this has only been very lightly tested and I might have one or
two more cleanups to tack on. Thoughts, reviews, flames appreciated...

Brian

[1] http://marc.info/?l=linux-xfs&m=150227679029089&w=2

Brian Foster (2):
  xfs: refactor buffer logging into buffer dirtying helper
  xfs: don't log dirty ranges for ordered buffers

 fs/xfs/libxfs/xfs_btree.c  |  3 +-
 fs/xfs/libxfs/xfs_ialloc.c |  2 --
 fs/xfs/xfs_trans.h         |  4 ++-
 fs/xfs/xfs_trans_buf.c     | 71 ++++++++++++++++++++++++++++------------------
 4 files changed, 48 insertions(+), 32 deletions(-)

-- 
2.9.4