[PATCH v6 16/20] nfsd: add a fi_connectable flag to struct nfs4_file

When encoding a filehandle for a CB_NOTIFY, there is no svc_export
available, but the server needs to know whether to encode a connectable
filehandle. Add a flag to the nfs4_file that tells whether the
svc_export under which a directory delegation was acquired has subtree
checking enabled, in which case it needs connectable filehandles.

Signed-off-by: Jeff Layton <[email protected]>
---
 fs/nfsd/nfs4state.c | 1 +
 fs/nfsd/state.h     | 1 +
 2 files changed, 2 insertions(+)

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 513cbc1a583f..aa99783ce901 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -5231,6 +5231,7 @@ static void nfsd4_file_init(const struct svc_fh *fh, struct nfs4_file *fp)
 	memset(fp->fi_access, 0, sizeof(fp->fi_access));
 	fp->fi_aliased = false;
 	fp->fi_inode = d_inode(fh->fh_dentry);
+	fp->fi_connectable = !(fh->fh_export->ex_flags & NFSEXP_NOSUBTREECHECK);
 #ifdef CONFIG_NFSD_PNFS
 	INIT_LIST_HEAD(&fp->fi_lo_states);
 	atomic_set(&fp->fi_lo_recalls, 0);
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index f8457e0f2b57..d912e3d04dd7 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -761,6 +761,7 @@ struct nfs4_file {
 	int			fi_delegees;
 	struct knfsd_fh		fi_fhandle;
 	bool			fi_had_conflict;
+	bool			fi_connectable;
 #ifdef CONFIG_NFSD_PNFS
 	struct list_head	fi_lo_states;
 	atomic_t		fi_lo_recalls;

-- 
2.54.0