This disappeared when I removed the special case for '.' in btrfs_lookup()
Signed-off-by: David Woodhouse <David.Woodhouse@xxxxxxxxx>
---
super.c | 34 +++++++++++++++++++---------------
1 files changed, 19 insertions(+), 15 deletions(-)
diff --git a/super.c b/super.c
index 55f4d00..f7b3eac 100644
--- a/super.c
+++ b/super.c
@@ -451,21 +451,25 @@ static int btrfs_get_sb(struct file_system_type *fs_type, int flags,
s->s_flags |= MS_ACTIVE;
}
- mutex_lock(&s->s_root->d_inode->i_mutex);
- root = lookup_one_len(subvol_name, s->s_root, strlen(subvol_name));
- mutex_unlock(&s->s_root->d_inode->i_mutex);
- if (IS_ERR(root)) {
- up_write(&s->s_umount);
- deactivate_super(s);
- error = PTR_ERR(root);
- goto error;
- }
- if (!root->d_inode) {
- dput(root);
- up_write(&s->s_umount);
- deactivate_super(s);
- error = -ENXIO;
- goto error;
+ if (!strcmp(subvol_name, "."))
+ root = dget(s->s_root);
+ else {
+ mutex_lock(&s->s_root->d_inode->i_mutex);
+ root = lookup_one_len(subvol_name, s->s_root, strlen(subvol_name));
+ mutex_unlock(&s->s_root->d_inode->i_mutex);
+ if (IS_ERR(root)) {
+ up_write(&s->s_umount);
+ deactivate_super(s);
+ error = PTR_ERR(root);
+ goto error;
+ }
+ if (!root->d_inode) {
+ dput(root);
+ up_write(&s->s_umount);
+ deactivate_super(s);
+ error = -ENXIO;
+ goto error;
+ }
}
mnt->mnt_sb = s;
--
1.5.5.1
--
David Woodhouse Open Source Technology Centre
David.Woodhouse@xxxxxxxxx Intel Corporation
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