From: Bryan Schumaker <bjschuma@xxxxxxxxxx> These patches build on Zach Brown's copyfile patches to add server side copy to both the NFS client and the NFS server. The first patch improves on the copyfile syscall to make it usable on my machine and also includes notes on other potential problems that I've found. The remaining patches first implement a sync copy, then expand to async. My testing was done on a server exporting an ext4 filesystem exporting an ext4 filesystem. I compared copying using the cp command to copying with the copyfile system call. File size: 512 MB cp: 4.244 seconds copyfile: 0.961 seconds File size: 1024 MB cp: 9.091 seconds copyfile: 1.919 seconds File size: 1536 MB cp: 15.291 seconds copyfile: 6.016 seconds Repeating these tests on a btrfs exported filesystem supporting the copyfile system call drops the time for copyfile to about 0.01 seconds. Feel free to send me any questions, comments or other thoughts! - Bryan Bryan Schumaker (5): Improve on the copyfile systemcall NFSD: Implement the COPY call NFS: Add COPY nfs operation NFSD: Defer copying NFS: Change copy to support async servers fs/copy_range.c | 10 +++- fs/nfs/callback.h | 13 ++++ fs/nfs/callback_proc.c | 9 +++ fs/nfs/callback_xdr.c | 54 ++++++++++++++++- fs/nfs/inode.c | 2 + fs/nfs/nfs4_fs.h | 7 +++ fs/nfs/nfs4file.c | 101 +++++++++++++++++++++++++++++++ fs/nfs/nfs4proc.c | 16 +++++ fs/nfs/nfs4xdr.c | 150 +++++++++++++++++++++++++++++++++++++++++++++++ fs/nfsd/nfs4callback.c | 136 ++++++++++++++++++++++++++++++++++++++++++ fs/nfsd/nfs4proc.c | 104 ++++++++++++++++++++++++++++++-- fs/nfsd/nfs4state.c | 15 ++++- fs/nfsd/nfs4xdr.c | 121 +++++++++++++++++++++++++++++++++++++- fs/nfsd/state.h | 23 +++++++- fs/nfsd/vfs.c | 9 +++ fs/nfsd/vfs.h | 1 + fs/nfsd/xdr4.h | 24 ++++++++ fs/nfsd/xdr4cb.h | 9 +++ include/linux/nfs4.h | 14 ++++- include/linux/nfs_xdr.h | 33 +++++++++++ include/linux/syscalls.h | 1 + 21 files changed, 836 insertions(+), 16 deletions(-) -- 1.8.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
