cifs: pull cifs_mount() call up

... to the point prior to sget().  Now we have cifs_sb set up early
enough.

Acked-by: Pavel Shilovsky <piastryyy@gmail.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 15 insertions, 12 deletions

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 2af14d4577a..4004bc647a7 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -104,8 +104,7 @@ cifs_sb_deactive(struct super_block *sb)
 }
 
 static int
-cifs_read_super(struct super_block *sb, struct smb_vol *volume_info,
-                const char *devname, int silent)
+cifs_read_super(struct super_block *sb)
 {
         struct inode *inode;
         struct cifs_sb_info *cifs_sb;
@@ -113,14 +112,6 @@ cifs_read_super(struct super_block *sb, struct smb_vol *volume_info,
 
         cifs_sb = CIFS_SB(sb);
 
-        rc = cifs_mount(cifs_sb, volume_info);
-
-        if (rc) {
-                if (!silent)
-                        cERROR(1, "cifs_mount failed w/return code = %d", rc);
-                return rc;
-        }
-
         if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIXACL)
                 sb->s_flags |= MS_POSIXACL;
 
@@ -692,6 +683,17 @@ cifs_do_mount(struct file_system_type *fs_type,
 
         cifs_setup_cifs_sb(volume_info, cifs_sb);
 
+        rc = cifs_mount(cifs_sb, volume_info);
+        if (rc) {
+                if (!(flags & MS_SILENT))
+                        cERROR(1, "cifs_mount failed w/return code = %d", rc);
+                root = ERR_PTR(rc);
+                unload_nls(volume_info->local_nls);
+                kfree(cifs_sb->mountdata);
+                kfree(cifs_sb);
+                goto out;
+        }
+
         mnt_data.vol = volume_info;
         mnt_data.cifs_sb = cifs_sb;
         mnt_data.flags = flags;
@@ -699,11 +701,13 @@ cifs_do_mount(struct file_system_type *fs_type,
         sb = sget(fs_type, cifs_match_super, set_anon_super, &mnt_data);
         if (IS_ERR(sb)) {
                 root = ERR_CAST(sb);
+                cifs_umount(cifs_sb);
                 goto out_cifs_sb;
         }
 
         if (sb->s_fs_info) {
                 cFYI(1, "Use existing superblock");
+                cifs_umount(cifs_sb);
                 kfree(cifs_sb->mountdata);
                 unload_nls(cifs_sb->local_nls);
                 kfree(cifs_sb);
@@ -715,8 +719,7 @@ cifs_do_mount(struct file_system_type *fs_type,
         sb->s_flags |= MS_NODIRATIME | MS_NOATIME;
         sb->s_fs_info = cifs_sb;
 
-        rc = cifs_read_super(sb, volume_info, dev_name,
-                             flags & MS_SILENT ? 1 : 0);
+        rc = cifs_read_super(sb);
         if (rc) {
                 root = ERR_PTR(rc);
                 goto out_super;