linux/fs/nfs/nfs4proc.c, branch v4.0

NFSv4.1: Clear the old state by our client id before establishing a new lease

2015-03-04T02:52:30Z

If the call to exchange-id returns with the EXCHGID4_FLAG_CONFIRMED_R flag set, then that means our lease was established by a previous mount instance. Ensure that we detect this situation, and that we clear the state held by that mount. Reported-by: Jorge Mora Signed-off-by: Trond Myklebust

NFS: Fix stateid used for NFS v4 closes

2015-03-02T23:06:42Z

After 566fcec60 the client uses the "current stateid" from the nfs4_state structure to close a file. This could potentially contain a delegation stateid, which is disallowed by the protocol and causes servers to return NFS4ERR_BAD_STATEID. This patch restores the (correct) behavior of sending the open stateid to close a file. Reported-by: Olga Kornievskaia Fixes: 566fcec60 (NFSv4: Fix an atomicity problem in CLOSE) Signed-off-by: Anna Schumaker Signed-off-by: Trond Myklebust

NFSv4: Set a barrier in the update_changeattr() helper

2015-03-02T04:23:06Z

Ensure that we don't regress the changes that were made to the directory. Signed-off-by: Trond Myklebust Tested-by: Chuck Lever

NFS: Add attribute update barriers to NFS writebacks

2015-03-02T04:23:06Z

Ensure that other operations that race with our write RPC calls cannot revert the file size updates that were made on the server. Signed-off-by: Trond Myklebust Tested-by: Chuck Lever

NFS: Add attribute update barriers to nfs_setattr_update_inode()

2015-03-02T04:23:05Z

Ensure that other operations which raced with our setattr RPC call cannot revert the file attribute changes that were made on the server. To do so, we artificially bump the attribute generation counter on the inode so that all calls to nfs_fattr_init() that precede ours will be dropped. The motivation for the patch came from Chuck Lever's reports of readaheads racing with truncate operations and causing the file size to be reverted. Reported-by: Chuck Lever Signed-off-by: Trond Myklebust Tested-by: Chuck Lever

NFSv4: nfs4_open_recover_helper() must set share access

2015-02-27T22:10:40Z

The share access mode is now specified as an argument in the nfs4_opendata, and so nfs4_open_recover_helper() needs to call nfs4_map_atomic_open_share() in order to set it. Fixes: 6ae373394c42 ("NFSv4.1: Ask for no delegation on OPEN if using O_DIRECT") Signed-off-by: Trond Myklebust

NFSv4.1: Clean up bind_conn_to_session

2015-02-18T21:11:09Z

We don't need to fake up an entire session in order retrieve the arguments. Signed-off-by: Trond Myklebust

NFSv4.1: Don't set up a backchannel if the server didn't agree to do so

2015-02-18T20:30:47Z

If the server doesn't agree to out backchannel setup request, then don't set one up. Signed-off-by: Trond Myklebust

NFSv4.1: Clean up create_session

2015-02-18T20:28:50Z

Don't decode directly into the shared struct session Signed-off-by: Trond Myklebust

NFSv4.1: Pin the inode and super block in asynchronous layoutreturns

2015-02-06T03:16:45Z

If we're sending an asynchronous layoutreturn, then we need to ensure that the inode and the super block remain pinned. Cc: Peng Tao Signed-off-by: Trond Myklebust Reviewed-by: Peng Tao