pnfsblock: cleanup_layoutcommit

In blocklayout driver. There are two things happening
while layoutcommit/cleanup.
1. the modified extents are encoded.
2. On cleanup the extents are put back on the layout rw
   extents list, for reads.

In the new system where actual xdr encoding is done in
encode_layoutcommit() directly into xdr buffer, these are
the new commit stages:

1. On setup_layoutcommit, the range is adjusted as before
   and a structure is allocated for communication with
   bl_encode_layoutcommit && bl_cleanup_layoutcommit
   (Generic layer provides a void-star to hang it on)

2. bl_encode_layoutcommit is called to do the actual
   encoding directly into xdr. The commit-extent-list is not
   freed and is stored on above structure.
   FIXME: The code is not yet converted to the new XDR cleanup

3. On cleanup the commit-extent-list is put back by a call
   to set_to_rw() as before, but with no need for XDR decoding
   of the list as before. And the commit-extent-list is freed.
   Finally allocated structure is freed.

[rm inode and pnfs_layout_hdr args from cleanup_layoutcommit()]
Signed-off-by: Jim Rees <[email protected]>
[pnfsblock: introduce bl_committing list]
Signed-off-by: Peng Tao <[email protected]>
[pnfsblock: SQUASHME: adjust to API change]
Signed-off-by: Fred Isaman <[email protected]>
[blocklayout: encode_layoutcommit implementation]
Signed-off-by: Boaz Harrosh <[email protected]>
[pnfsblock: fix bug setting up layoutcommit.]
Signed-off-by: Tao Guo <[email protected]>
[pnfsblock: cleanup_layoutcommit wants a status parameter]
Signed-off-by: Boaz Harrosh <[email protected]>
Signed-off-by: Benny Halevy <[email protected]>
Signed-off-by: Benny Halevy <[email protected]>
Signed-off-by: Jim Rees <[email protected]>
Signed-off-by: Trond Myklebust <[email protected]>

0 files changed, 0 insertions, 0 deletions