+/*
+ * Check if the peer connection is on the local node. We need to use GFP_NOFS
+ * for requests from a local client to avoid recursing into the filesystem
+ * as we might end up waiting on a page sent in the request we're serving.
+ *
+ * Use __GFP_HIGHMEM so that the pages can use all of the available memory
+ * on 32-bit machines. Use more aggressive GFP_HIGHUSER flags from non-local
+ * clients to be able to generate more memory pressure on the OSS and allow
+ * inactive pages to be reclaimed, since it doesn't have any other processes
+ * or allocations that generate memory reclaim pressure.
+ *
+ * See b=17576 (bdf50dc9) and b=19529 (3dcf18d3) for details.
+ */
+static inline bool ptlrpc_connection_is_local(struct ptlrpc_connection *conn)
+{
+ if (!conn)
+ return false;
+
+ if (conn->c_peer.nid == conn->c_self)
+ return true;
+
+ RETURN(LNetIsPeerLocal(conn->c_peer.nid));
+}
+