linux-kernel - [PATCH 3.10 110/268] Move check for prefix path to within cifs_get

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Date:   Mon, 19 Jun 2017 20:30:09 +0200
From:   Willy Tarreau <w@....eu>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        linux@...ck-us.net
Cc:     Sachin Prabhu <sprabhu@...hat.com>,
        Steve French <smfrench@...il.com>, Jiri Slaby <jslaby@...e.cz>,
        Willy Tarreau <w@....eu>
Subject: [PATCH 3.10 110/268] Move check for prefix path to within cifs_get_root()

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>
Acked-by: Aurelien Aptel <aaptel@...e.com>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Signed-off-by: Willy Tarreau <w@....eu>
---
 fs/cifs/cifsfs.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 191ef6e..e4e2152 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -565,6 +565,9 @@ cifs_get_root(struct smb_vol *vol, struct super_block *sb)
 	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)
@@ -689,11 +692,7 @@ cifs_do_mount(struct file_system_type *fs_type,
 		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;
 
-- 
2.8.0.rc2.1.gbe9624a