workqueue: skip the node_nr_active update for non-unbound workqueuesgrafted

apply_wqattrs_commit() updates node_nr_active->max unconditionally.
wq->node_nr_active[] is only allocated for unbound workqueues, so guard
the call before per-cpu workqueues start using this path.

No functional change: only unbound workqueues reach apply_wqattrs_*()
today.

Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 42 insertions, 0 deletions

diff --git a/fs/efs/file.c b/fs/efs/file.c
new file mode 100644
index 000000000..9153dfe79
--- /dev/null
+++ b/fs/efs/file.c
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * file.c
+ *
+ * Copyright (c) 1999 Al Smith
+ *
+ * Portions derived from work (c) 1995,1996 Christian Vogelgsang.
+ */
+
+#include <linux/buffer_head.h>
+#include "efs.h"
+
+int efs_get_block(struct inode *inode, sector_t iblock,
+		  struct buffer_head *bh_result, int create)
+{
+	int error = -EROFS;
+	long phys;
+
+	if (create)
+		return error;
+	if (iblock >= inode->i_blocks)
+		return 0;
+
+	phys = efs_map_block(inode, iblock);
+	if (phys)
+		map_bh(bh_result, inode->i_sb, phys);
+	return 0;
+}
+
+int efs_bmap(struct inode *inode, efs_block_t block) {
+
+	if (block < 0) {
+		pr_warn("%s(): block < 0\n", __func__);
+		return 0;
+	}
+
+	/* are we about to read past the end of a file ? */
+	if (!(block < inode->i_blocks))
+		return 0;
+
+	return efs_map_block(inode, block);
+}