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NFSv4: Don't use synchronous delegation recall in exception handling 

The code needs to be able to work from inside an asynchronous context.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust 2015-09-20 14:58:42 -04:00
parent 516285ebe0
commit 4816fdadab
2 changed files with 5 additions and 9 deletions
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6
fs/nfs/delegation.c
View File

@ -721,14 +721,12 @@ int nfs_async_inode_return_delegation(struct inode *inode,
struct nfs_client *clp = server->nfs_client;
struct nfs_delegation *delegation;
filemap_flush(inode->i_mapping);
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
if (delegation == NULL)
goto out_enoent;
if (!clp->cl_mvops->match_stateid(&delegation->stateid, stateid))
if (stateid != NULL &&
!clp->cl_mvops->match_stateid(&delegation->stateid, stateid))
goto out_enoent;
nfs_mark_return_delegation(server, delegation);
rcu_read_unlock();

8
fs/nfs/nfs4proc.c
View File

@ -362,11 +362,9 @@ static int nfs4_do_handle_exception(struct nfs_server *server,
case -NFS4ERR_DELEG_REVOKED:
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_BAD_STATEID:
if (inode && nfs4_have_delegation(inode, FMODE_READ)) {
nfs4_inode_return_delegation(inode);
exception->retry = 1;
return 0;
}
if (inode && nfs_async_inode_return_delegation(inode,
NULL) == 0)
goto wait_on_recovery;
if (state == NULL)
break;
ret = nfs4_schedule_stateid_recovery(server, state);