These patches are my initial implementation of READ_PLUS. I still have a few issues to work out before they can be applied, but I wanted to submit them anyway to get feedback before going much further. These patches were developed on top of my earlier SEEK and WRITE_PLUS patches, and probably won't apply cleanly without them (I am willing to reorder things if necessary!). On the server side, I handle the cases where a file is 100% hole, 100% data or hole followed by data. Any holes after a data segment will be expanded to zeros on the wire. This is due to a limitation in the the NFSD encode-to-page function that will adjust pointers to point to the xdr tail after reading a file to the "pages" section. Bruce, do you have any suggestions here? The client side needs to punch holes after decoding page information, since data on pages will be aligned at the start of the page array. So a file that is <HOLE><DATA> will store the hole information, decode the data, and then punch the hole before returning. I think it would be better to use the provided offset field to decode everything to their final locations, but I'm struggling to come up with a clean way of doing so using the code that is already there. Let me know what you all think! Anna Anna Schumaker (3): NFSD: Implement READ_PLUS support SUNRPC: This patch adds functions for shifting page data NFS: Client side changes for READ_PLUS fs/nfs/nfs4client.c | 2 +- fs/nfs/nfs4proc.c | 23 +++++- fs/nfs/nfs4xdr.c | 191 +++++++++++++++++++++++++++++++++++++++++++++ fs/nfsd/Kconfig | 14 ++++ fs/nfsd/nfs4proc.c | 9 +++ fs/nfsd/nfs4xdr.c | 177 ++++++++++++++++++++++++++++++++++++----- include/linux/nfs4.h | 1 + include/linux/nfs_fs_sb.h | 1 + include/linux/sunrpc/xdr.h | 1 + net/sunrpc/xdr.c | 115 ++++++++++++++++++++++++++- 10 files changed, 511 insertions(+), 23 deletions(-) -- 1.8.5.2 -- 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
