[PATCH] backing-file: fix backing_file_open() kerneldoc parameter

The kerneldoc for backing_file_open() documented a @user_path argument,
but the function takes const struct file *user_file. The user
path is derived as &user_file->f_path.

Update the @-tag to @user_file and adjust the description accordingly.
Also fix the "reuqested" typo in the old comment.

Signed-off-by: Li Wang <[email protected]>
---
 fs/backing-file.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/backing-file.c b/fs/backing-file.c
index 1f3bbfc75882..a530c2d19d20 100644
--- a/fs/backing-file.c
+++ b/fs/backing-file.c
@@ -18,13 +18,14 @@
 
 /**
  * backing_file_open - open a backing file for kernel internal use
- * @user_path:	path that the user reuqested to open
+ * @user_file:	file the user opened on the stackable filesystem
  * @flags:	open flags
  * @real_path:	path of the backing file
  * @cred:	credentials for open
  *
  * Open a backing file for a stackable filesystem (e.g., overlayfs).
- * @user_path may be on the stackable filesystem and @real_path on the
+ * The user_path (taken from @user_file->f_path) may be
+ * on the stackable filesystem and @real_path on the
  * underlying filesystem.  In this case, we want to be able to return the
  * @user_path of the stackable filesystem. This is done by embedding the
  * returned file into a container structure that also stores the stacked
-- 
2.34.1