Commit f9e0cc9c authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFSv4: Don't remove the delegation from the super_list more than once 



Add a check to ensure that we haven't already removed the delegation
from the inode after we take all the relevant locks.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
parent b47e0e47

fs/nfs/delegation.c

+4 −0
Original line number Diff line number Diff line
@@ -298,6 +298,10 @@ nfs_detach_delegation_locked(struct nfs_inode *nfsi, 
		return NULL;



	spin_lock(&delegation->lock);

	if (!delegation->inode) {

		spin_unlock(&delegation->lock);

		return NULL;

	}

	set_bit(NFS_DELEGATION_RETURNING, &delegation->flags);

	list_del_rcu(&delegation->super_list);

	delegation->inode = NULL;

CRA Git | Maintained and supported by SUSTech CRA and CCSE