The server will just return an NFS4ERR_OPENMODE anyway.
Signed-off-by: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx>
---
fs/nfs/delegation.c | 16 ++++++++++------
fs/nfs/delegation.h | 2 +-
fs/nfs/nfs4proc.c | 3 ++-
3 files changed, 13 insertions(+), 8 deletions(-)
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index 97d5357..e27c097 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -694,21 +694,25 @@ int nfs_delegations_present(struct nfs_client *clp)
* nfs4_copy_delegation_stateid - Copy inode's state ID information
* @dst: stateid data structure to fill in
* @inode: inode to check
+ * @flags: delegation type requirement
*
- * Returns one and fills in "dst->data" * if inode had a delegation,
- * otherwise zero is returned.
+ * Returns "true" and fills in "dst->data" * if inode had a delegation,
+ * otherwise "false" is returned.
*/
-int nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode)
+bool nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode,
+ fmode_t flags)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_delegation *delegation;
- int ret = 0;
+ bool ret;
+ flags &= FMODE_READ|FMODE_WRITE;
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
- if (delegation != NULL) {
+ ret = (delegation != NULL && (delegation->type & flags) == flags);
+ if (ret) {
nfs4_stateid_copy(dst, &delegation->stateid);
- ret = 1;
+ nfs_mark_delegation_referenced(delegation);
}
rcu_read_unlock();
return ret;
diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h
index 691a796..e193012 100644
--- a/fs/nfs/delegation.h
+++ b/fs/nfs/delegation.h
@@ -54,7 +54,7 @@ void nfs_delegation_reap_unclaimed(struct nfs_client *clp);
int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync);
int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid);
int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl);
-int nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode);
+bool nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode, fmode_t flags);
void nfs_mark_delegation_referenced(struct nfs_delegation *delegation);
int nfs_have_delegation(struct inode *inode, fmode_t flags);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index a8dd04d..1bdc5b3 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1929,7 +1929,8 @@ static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
nfs_fattr_init(fattr);
- if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) {
+ if (nfs4_copy_delegation_stateid(&arg.stateid, inode,
+ FMODE_READ|FMODE_WRITE)) {
/* Use that stateid */
} else if (state != NULL) {
nfs4_select_rw_stateid(&arg.stateid, state, current->files, current->tgid);
--
1.7.7.6
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