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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-03-07 16:39:06 -0500 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-03-07 17:11:19 -0500 |
| commit | 3114ea7a24d3264c090556a2444fc6d2c06176d4 (patch) | |
| tree | 50b8f1f3f43c6eb93093abec368c070e2efdc7d2 /fs/nfs | |
| parent | cf470c3e004efe16d73dc8ba9b29bdc9a5327cda (diff) | |
| download | linux-3114ea7a24d3264c090556a2444fc6d2c06176d4.tar.gz linux-3114ea7a24d3264c090556a2444fc6d2c06176d4.tar.bz2 linux-3114ea7a24d3264c090556a2444fc6d2c06176d4.zip | |
NFSv4: Return the delegation if the server returns NFS4ERR_OPENMODE
If a setattr() fails because of an NFS4ERR_OPENMODE error, it is
probably due to us holding a read delegation. Ensure that the
recovery routines return that delegation in this case.
Reported-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/nfs4_fs.h | 1 | ||||
| -rw-r--r-- | fs/nfs/nfs4proc.c | 13 |
2 files changed, 13 insertions, 1 deletions
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 026878cb2698..d1989e3f23c3 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -182,6 +182,7 @@ struct nfs4_exception { long timeout; int retry; struct nfs4_state *state; + struct inode *inode; }; struct nfs4_state_recovery_ops { diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 32e0d08a9771..a8dd04db764f 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -262,18 +262,28 @@ static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struc { struct nfs_client *clp = server->nfs_client; struct nfs4_state *state = exception->state; + struct inode *inode = exception->inode; int ret = errorcode; exception->retry = 0; switch(errorcode) { case 0: return 0; + case -NFS4ERR_OPENMODE: + if (nfs_have_delegation(inode, FMODE_READ)) { + nfs_inode_return_delegation(inode); + exception->retry = 1; + return 0; + } + if (state == NULL) + break; + nfs4_schedule_stateid_recovery(server, state); + goto wait_on_recovery; case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_BAD_STATEID: if (state != NULL) nfs_remove_bad_delegation(state->inode); - case -NFS4ERR_OPENMODE: if (state == NULL) break; nfs4_schedule_stateid_recovery(server, state); @@ -1939,6 +1949,7 @@ static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, struct nfs_server *server = NFS_SERVER(inode); struct nfs4_exception exception = { .state = state, + .inode = inode, }; int err; do { |