wireguard-linux/fs/nfs/proc.c, branch jd/unified-crypt-queue

NFS: Add softreval behaviour to nfs_lookup_revalidate()

2020-01-24T21:51:13Z

If the server is unavaliable, we want to allow the revalidating lookup to time out, and to default to validating the cached dentry if the 'softreval' mount option is set. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker

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

NFS: Add fs_context support.

2020-01-15T15:15:17Z

Add filesystem context support to NFS, parsing the options in advance and attaching the information to struct nfs_fs_context. The highlights are: (*) Merge nfs_mount_info and nfs_clone_mount into nfs_fs_context. This structure represents NFS's superblock config. (*) Make use of the VFS's parsing support to split comma-separated lists (*) Pin the NFS protocol module in the nfs_fs_context. (*) Attach supplementary error information to fs_context. This has the downside that these strings must be static and can't be formatted. (*) Remove the auxiliary file_system_type structs since the information necessary can be conveyed in the nfs_fs_context struct instead. (*) Root mounts are made by duplicating the config for the requested mount so as to have the same parameters. Submounts pick up their parameters from the parent superblock. [AV -- retrans is u32, not string] [SM -- Renamed cfg to ctx in a few functions in an earlier patch] [SM -- Moved fs_context mount option parsing to an earlier patch] [SM -- Moved fs_context error logging to a later patch] [SM -- Fixed printks in nfs4_try_get_tree() and nfs4_get_referral_tree()] [SM -- Added is_remount_fc() helper] [SM -- Deferred some refactoring to a later patch] [SM -- Fixed referral mounts, which were broken in the original patch] [SM -- Fixed leak of nfs_fattr when fs_context is freed] Signed-off-by: David Howells Signed-off-by: Al Viro Signed-off-by: Scott Mayhew Signed-off-by: Anna Schumaker

NFSv2: Fix write regression

2019-08-27T14:24:56Z

Ensure we update the write result count on success, since the RPC call itself does not do so. Reported-by: Jan Stancek Reported-by: Naresh Kamboju Signed-off-by: Trond Myklebust Tested-by: Jan Stancek

NFSv2: Fix eof handling

2019-08-27T14:24:56Z

If we received a reply from the server with a zero length read and no error, then that implies we are at eof. Signed-off-by: Trond Myklebust

NFS/NFSD/SUNRPC: replace generic creds with 'struct cred'.

2018-12-19T18:52:46Z

SUNRPC has two sorts of credentials, both of which appear as "struct rpc_cred". There are "generic credentials" which are supplied by clients such as NFS and passed in 'struct rpc_message' to indicate which user should be used to authorize the request, and there are low-level credentials such as AUTH_NULL, AUTH_UNIX, AUTH_GSS which describe the credential to be sent over the wires. This patch replaces all the generic credentials by 'struct cred' pointers - the credential structure used throughout Linux. For machine credentials, there is a special 'struct cred *' pointer which is statically allocated and recognized where needed as having a special meaning. A look-up of a low-level cred will map this to a machine credential. Signed-off-by: NeilBrown Acked-by: J. Bruce Fields Signed-off-by: Anna Schumaker

NFS: struct nfs_open_dir_context: convert rpc_cred pointer to cred.

2018-12-19T18:52:46Z

Use the common 'struct cred' to pass credentials for readdir. Signed-off-by: NeilBrown Signed-off-by: Anna Schumaker

NFS: Pass the inode down to the getattr() callback

2018-06-04T16:07:07Z

Allow the getattr() callback to check things like whether or not we hold a delegation so that it can adjust the attributes that it is asking for. Signed-off-by: Trond Myklebust

NFSv4: Fix sillyrename to return the delegation when appropriate

2018-05-31T19:02:16Z

Ensure that we pass down the inode of the file being deleted so that we can return any delegation being held. Signed-off-by: Trond Myklebust

NFS: Move call to nfs4_state_protect() to nfs4_commit_setup()

2018-05-31T19:02:16Z

Rather than doing this in the generic NFS client code. Let's put this with the other v4 stuff so it's all in one place. Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust