linux-kernel - [PATCH 3.16 185/192] Move check for prefix path to within cifs_get

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Message-ID: <lsq.1507553065.676301919@decadent.org.uk>
Date:   Mon, 09 Oct 2017 13:44:25 +0100
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, "Aurelien Aptel" <aaptel@...e.com>,
        "Steve French" <smfrench@...il.com>,
        "Sachin Prabhu" <sprabhu@...hat.com>
Subject: [PATCH 3.16 185/192] Move check for prefix path to within
 cifs_get_root()

3.16.49-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Sachin Prabhu <sprabhu@...hat.com>

commit 348c1bfa84dfc47da1f1234b7f2bf09fa798edea upstream.

Signed-off-by: Sachin Prabhu <sprabhu@...hat.com>
Tested-by: Aurelien Aptel <aaptel@...e.com>
Signed-off-by: Steve French <smfrench@...il.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 fs/cifs/cifsfs.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -584,6 +584,9 @@ cifs_get_root(struct smb_vol *vol, struc
 	char *s, *p;
 	char sep;
 
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH)
+		return dget(sb->s_root);
+
 	full_path = cifs_build_path_to_root(vol, cifs_sb,
 					    cifs_sb_master_tcon(cifs_sb));
 	if (full_path == NULL)
@@ -708,11 +711,7 @@ cifs_do_mount(struct file_system_type *f
 		sb->s_flags |= MS_ACTIVE;
 	}
 
-	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH)
-		root = dget(sb->s_root);
-	else
-		root = cifs_get_root(volume_info, sb);
-
+	root = cifs_get_root(volume_info, sb);
 	if (IS_ERR(root))
 		goto out_super;