diff options
Diffstat (limited to 'fs/nfs/delegation.c')
| -rw-r--r-- | fs/nfs/delegation.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 606dd3871f66..ade44ca0c66c 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -1041,6 +1041,33 @@ int nfs_delegations_present(struct nfs_client *clp) } /** + * nfs4_refresh_delegation_stateid - Update delegation stateid seqid + * @dst: stateid to refresh + * @inode: inode to check + * + * Returns "true" and updates "dst->seqid" * if inode had a delegation + * that matches our delegation stateid. Otherwise "false" is returned. + */ +bool nfs4_refresh_delegation_stateid(nfs4_stateid *dst, struct inode *inode) +{ + struct nfs_delegation *delegation; + bool ret = false; + if (!inode) + goto out; + + rcu_read_lock(); + delegation = rcu_dereference(NFS_I(inode)->delegation); + if (delegation != NULL && + nfs4_stateid_match_other(dst, &delegation->stateid)) { + dst->seqid = delegation->stateid.seqid; + return ret; + } + rcu_read_unlock(); +out: + return ret; +} + +/** * nfs4_copy_delegation_stateid - Copy inode's state ID information * @inode: inode to check * @flags: delegation type requirement |