On Wed, Aug 26, 2015 at 12:01 AM, Anna Schumaker
<[email protected]> wrote:
> Hey Tao,
>
> On 08/25/2015 11:42 AM, Peng Tao wrote:
>> On Tue, Aug 25, 2015 at 11:33 PM, Peng Tao <[email protected]> wrote:
>>> Hi all,
>>>
>>> This patchset adds NFSv42 COPY support to nfs and nfsd. As suggested by Christoph,
>>> it pulls btrfs BTRFS_IOC_CLONE/BTRFS_IOC_CLONE_RANGE ioctls to generic layer and
>>> adds a new file operation to call down to file systems. Then the CLONE ioctl
>>> is implemented for NFS and NFSD.
>>>
>>> I took a slightly different approach from Anna's NFS42 COPY implementation
>>> (http://www.spinics.net/lists/linux-nfs/msg53009.html) mainly because CLONE
>>> has different requirements than COPY. And the main differences between the two are:
>>> 1. well, CLONE is supported rather than COPY.
>>> 2. vfs_file_clone_range() does not expect file systems to do data copy, and thus
>>> no rw_verify_area() required.
>>> 3. clone does not expect partial success.
>>> 4. clone does not fall back to data copy if underlying storage does not support it.
>>> 5. no new system call required. We reuse existing BTRFS_IOC_CLONE/BTRFS_IOC_CLONE_RANGE
>>> and make it generic to all file systems.
>> I should have mentioned that this overlaps with Anna's COPY work.
>> We'll deal with the conflicts after figuring out what to do with both.
>
> Since we're both working on this at the same time, can you change the title of this patch series to "NFSv42 CLONE"? I got confused when I saw these patches :)
>
oh, sorry my bad. I definitely was thinking about CLONE when typing
COPY in the mail subject line... now fixed.
Thanks,
Tao
> Thanks,
> Anna
>
>>
>> Cheers,
>> Tao
>>
>>>
>>> Cheers,
>>> Tao
>>>
>>> Anna Schumaker (2):
>>> nfsd: Pass filehandle to nfs4_preprocess_stateid_op()
>>> NFSD: Implement the CLONE call
>>>
>>> Peng Tao (9):
>>> vfs: pull btrfs clone API to vfs layer
>>> vfs/btrfs: add .clone_range file operation
>>> nfs42: decode_layoutstats does not need res parameter
>>> nfs42: remove unused declaration
>>> nfs42: add CLONE xdr functions
>>> nfs42: add CLONE proc functions
>>> nfs42: add .copy_range file operation
>>> nfs: get clone_blksize when probing fsinfo
>>> nfs42: respect clone_blksize
>>>
>>> fs/btrfs/ctree.h | 2 +
>>> fs/btrfs/file.c | 1 +
>>> fs/btrfs/ioctl.c | 68 ++++--------------------------
>>> fs/ioctl.c | 30 +++++++++++++
>>> fs/nfs/client.c | 1 +
>>> fs/nfs/nfs42.h | 3 +-
>>> fs/nfs/nfs42proc.c | 71 +++++++++++++++++++++++++++++++
>>> fs/nfs/nfs42xdr.c | 102 +++++++++++++++++++++++++++++++++++++++++++--
>>> fs/nfs/nfs4file.c | 58 ++++++++++++++++++++++++++
>>> fs/nfs/nfs4proc.c | 4 +-
>>> fs/nfs/nfs4xdr.c | 26 ++++++++++++
>>> fs/nfsd/nfs4proc.c | 91 ++++++++++++++++++++++++++++++++++++----
>>> fs/nfsd/nfs4state.c | 5 +--
>>> fs/nfsd/nfs4xdr.c | 21 ++++++++++
>>> fs/nfsd/state.h | 4 +-
>>> fs/nfsd/vfs.c | 7 ++++
>>> fs/nfsd/vfs.h | 1 +
>>> fs/nfsd/xdr4.h | 10 +++++
>>> fs/read_write.c | 45 ++++++++++++++++++++
>>> include/linux/fs.h | 4 ++
>>> include/linux/nfs4.h | 7 +++-
>>> include/linux/nfs_fs_sb.h | 2 +
>>> include/linux/nfs_xdr.h | 20 +++++++++
>>> include/uapi/linux/btrfs.h | 10 -----
>>> include/uapi/linux/fs.h | 9 ++++
>>> 25 files changed, 510 insertions(+), 92 deletions(-)
>>>
>>> --
>>> 1.8.3.1
>>>
>
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