kernel/include/linux/nfs_fs_sb.h, branch linux-5.11.y

NFS: Add READ_PLUS data segment support

2020-10-07T18:28:39Z

This patch adds client support for decoding a single NFS4_CONTENT_DATA segment returned by the server. This is the simplest implementation possible, since it does not account for any hole segments in the reply. Signed-off-by: Anna Schumaker

NFSv4.2: query the server for extended attribute support

2020-07-13T21:52:45Z

Query the server for extended attribute support, and record it as the NFS_CAP_XATTR flag in the server capabilities. Signed-off-by: Frank van der Linden Signed-off-by: Trond Myklebust

NFSv4.2: define limits and sizes for user xattr handling

2020-07-13T21:52:45Z

Set limits for extended attributes (attribute value size and listxattr buffer size), based on the fs-independent limits (XATTR_*_MAX). Define the maximum XDR sizes for the RFC 8276 XATTR operations. In the case of operations that carry a larger payload (SETXATTR, GETXATTR, LISTXATTR), these exclude that payload, which is added as separate pages, like other operations do. Define, much like for read and write operations, the maximum overhead sizes for get/set/listxattr, and use them to limit the maximum payload size for those operations, in combination with the channel attributes. Signed-off-by: Frank van der Linden Signed-off-by: Trond Myklebust

NFS: Add mount option 'softreval'

2020-01-15T15:54:33Z

Add a mount option 'softreval' that allows attribute revalidation 'getattr' calls to time out, and causes them to fall back to using the cached attributes. The use case for this option is for ensuring that we can still (slowly) traverse paths and use cached information even when the server is down. Once the server comes back up again, the getattr calls start succeeding, and the caches will revalidate as usual. The 'softreval' mount option is automatically enabled if you have specified 'softerr'. It can be turned off using the options 'nosoftreval', or 'hard'. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

Merge branch 'linux-ssc-for-5.5'

2019-11-06T13:55:23Z

NFSv4.1: Don't rebind to the same source port when reconnecting to the server

2019-11-04T02:28:45Z

NFSv2, v3 and NFSv4 servers often have duplicate replay caches that look at the source port when deciding whether or not an RPC call is a replay of a previous call. This requires clients to perform strange TCP gymnastics in order to ensure that when they reconnect to the server, they bind to the same source port. NFSv4.1 and NFSv4.2 have sessions that provide proper replay semantics, that do not look at the source port of the connection. This patch therefore ensures they can ignore the rebind requirement. Signed-off-by: Trond Myklebust

NFS/pnfs: Separate NFSv3 DS and MDS traffic

2019-11-04T02:28:45Z

If a NFSv3 server is being used as both a DS and as a regular NFSv3 server, we may want to keep the IO traffic on a separate TCP connection, since it will typically have very different timeout characteristics. This patch therefore sets up a flag to separate the two modes of operation for the nfs_client. Signed-off-by: Trond Myklebust

NFS: Add a flag to tell nfs_client to set RPC_CLNT_CREATE_NOPING

2019-11-04T02:28:44Z

Add a flag to tell the nfs_client it should set RPC_CLNT_CREATE_NOPING when creating the rpc client. Signed-off-by: Trond Myklebust

NFS: Convert struct nfs_fattr to use struct timespec64

2019-11-04T02:28:44Z

NFSv4 supports 64-bit times, so we should switch to using struct timespec64 when decoding attributes. Signed-off-by: Trond Myklebust

NFS: add COPY_NOTIFY operation

2019-10-09T16:05:45Z

Try using the delegation stateid, then the open stateid. Only NL4_NETATTR, No support for NL4_NAME and NL4_URL. Allow only one source server address to be returned for now. To distinguish between same server copy offload ("intra") and a copy between different server ("inter"), do a check of server owner identity and also make sure server is capable of doing a copy offload. Signed-off-by: Andy Adamson Signed-off-by: Olga Kornievskaia