diff options
Diffstat (limited to 'fs/overlayfs/copy_up.c')
| -rw-r--r-- | fs/overlayfs/copy_up.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c index 95dce240ba17..568f743a5584 100644 --- a/fs/overlayfs/copy_up.c +++ b/fs/overlayfs/copy_up.c @@ -1073,6 +1073,15 @@ static int ovl_copy_up_flags(struct dentry *dentry, int flags) if (WARN_ON(disconnected && d_is_dir(dentry))) return -EIO; + /* + * We may not need lowerdata if we are only doing metacopy up, but it is + * not very important to optimize this case, so do lazy lowerdata lookup + * before any copy up, so we can do it before taking ovl_inode_lock(). + */ + err = ovl_maybe_lookup_lowerdata(dentry); + if (err) + return err; + old_cred = ovl_override_creds(dentry->d_sb); while (!err) { struct dentry *next; |