X-Git-Url: http://git.cascardo.eti.br/?a=blobdiff_plain;f=fs%2Fdebugfs%2Ffile.c;fp=fs%2Fdebugfs%2Ffile.c;h=2e86d66f7850368c2afa81fb0e1a9adc8149e872;hb=83b711cbf4ff42a9996c5f092762b3967d307d73;hp=8a548bee1b3d68b277ed7028a93e7edf5a703906;hpb=4d45f7974ccf0aa783034fef2661573b3a28609e;p=cascardo%2Flinux.git

diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
index 8a548bee1b3d..2e86d66f7850 100644
--- a/fs/debugfs/file.c
+++ b/fs/debugfs/file.c
@@ -842,8 +842,15 @@ static ssize_t read_file_blob(struct file *file, char __user *user_buf,
 			      size_t count, loff_t *ppos)
 {
 	struct debugfs_blob_wrapper *blob = file->private_data;
-	return simple_read_from_buffer(user_buf, count, ppos, blob->data,
-			blob->size);
+	ssize_t r;
+	int srcu_idx;
+
+	r = debugfs_use_file_start(F_DENTRY(file), &srcu_idx);
+	if (likely(!r))
+		r = simple_read_from_buffer(user_buf, count, ppos, blob->data,
+					blob->size);
+	debugfs_use_file_finish(srcu_idx);
+	return r;
 }
 
 static const struct file_operations fops_blob = {
@@ -880,7 +887,7 @@ struct dentry *debugfs_create_blob(const char *name, umode_t mode,
 				   struct dentry *parent,
 				   struct debugfs_blob_wrapper *blob)
 {
-	return debugfs_create_file(name, mode, parent, blob, &fops_blob);
+	return debugfs_create_file_unsafe(name, mode, parent, blob, &fops_blob);
 }
 EXPORT_SYMBOL_GPL(debugfs_create_blob);