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| author | Miklos Szeredi <mszeredi@redhat.com> | 2016-12-16 11:02:55 +0100 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2016-12-16 11:02:55 +0100 |
| commit | 804032fabb3b5270a7bc355f478eed45b1a5b041 (patch) | |
| tree | bb93fe2b08b09092e5e8a365ce1bb17294329de1 /fs/overlayfs | |
| parent | ca4c8a3a800039c2681d609c5b7491c1bd17c0a7 (diff) | |
| download | linux-804032fabb3b5270a7bc355f478eed45b1a5b041.tar.gz linux-804032fabb3b5270a7bc355f478eed45b1a5b041.tar.bz2 linux-804032fabb3b5270a7bc355f478eed45b1a5b041.zip | |
ovl: don't check rename to self
This is redundant, the vfs already performed this check (and was broken,
see commit 9409e22acdfc ("vfs: rename: check backing inode being equal")).
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs')
| -rw-r--r-- | fs/overlayfs/dir.c | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c index 4ef0d539b097..a806fb168ea3 100644 --- a/fs/overlayfs/dir.c +++ b/fs/overlayfs/dir.c @@ -826,18 +826,6 @@ static int ovl_rename(struct inode *olddir, struct dentry *old, err = -EXDEV; if (!overwrite && OVL_TYPE_MERGE_OR_LOWER(new_type) && new_is_dir) goto out; - - err = 0; - if (!OVL_TYPE_UPPER(new_type) && !OVL_TYPE_UPPER(old_type)) { - if (ovl_dentry_lower(old)->d_inode == - ovl_dentry_lower(new)->d_inode) - goto out; - } - if (OVL_TYPE_UPPER(new_type) && OVL_TYPE_UPPER(old_type)) { - if (ovl_dentry_upper(old)->d_inode == - ovl_dentry_upper(new)->d_inode) - goto out; - } } else { if (ovl_dentry_is_opaque(new)) new_type = __OVL_PATH_UPPER; @@ -933,6 +921,9 @@ static int ovl_rename(struct inode *olddir, struct dentry *old, if (newdentry == trap) goto out_dput; + if (WARN_ON(olddentry->d_inode == newdentry->d_inode)) + goto out_dput; + if (is_dir && !old_opaque && new_opaque) { err = ovl_set_opaque(olddentry); if (err) |