- * Note: gets a refcount on the layout hdr and on its respective inode.
- * Caller must put the layout hdr and the inode.
+ * Note: returns a refcount on the inode and superblock
+ */
+static struct inode *nfs_layout_find_inode_by_stateid(struct nfs_client *clp,
+ const nfs4_stateid *stateid)
+{
+ struct nfs_server *server;
+ struct inode *inode;
+ struct pnfs_layout_hdr *lo;
+
+restart:
+ list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
+ list_for_each_entry(lo, &server->layouts, plh_layouts) {
+ if (stateid != NULL &&
+ !nfs4_stateid_match_other(stateid, &lo->plh_stateid))
+ continue;
+ inode = igrab(lo->plh_inode);
+ if (!inode)
+ continue;
+ if (!nfs_sb_active(inode->i_sb)) {
+ rcu_read_lock();
+ spin_unlock(&clp->cl_lock);
+ iput(inode);
+ spin_lock(&clp->cl_lock);
+ goto restart;
+ }
+ return inode;
+ }
+ }
+
+ return NULL;
+}
+
+/*
+ * Lookup a layout inode by filehandle.
+ *
+ * Note: returns a refcount on the inode and superblock