vfs: push dentry_unhash on rename_dir into file systems

Only a few file systems need this.  Start by pushing it down into each
rename method (except gfs2 and xfs) so that it can be dealt with on a
per-fs basis.

Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

36 files changed, 110 insertions, 12 deletions

diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index ecd77172bf03..8d7f3e69ae29 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -840,6 +840,9 @@ v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
         struct p9_fid *newdirfid;
         struct p9_wstat wstat;
 
+        if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         P9_DPRINTK(P9_DEBUG_VFS, "\n");
         retval = 0;
         old_inode = old_dentry->d_inode;
diff --git a/fs/affs/namei.c b/fs/affs/namei.c
index d087153d5052..03330e2e390c 100644
--- a/fs/affs/namei.c
+++ b/fs/affs/namei.c
@@ -419,6 +419,9 @@ affs_rename(struct inode *old_dir, struct dentry *old_dentry,
         struct buffer_head *bh = NULL;
         int retval;
 
+        if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         pr_debug("AFFS: rename(old=%u,\"%*s\" to new=%u,\"%*s\")\n",
                  (u32)old_dir->i_ino, (int)old_dentry->d_name.len, old_dentry->d_name.name,
                  (u32)new_dir->i_ino, (int)new_dentry->d_name.len, new_dentry->d_name.name);
diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 9a7f41421534..2c4e05160042 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -1148,6 +1148,9 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry,
         struct key *key;
         int ret;
 
+        if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         vnode = AFS_FS_I(old_dentry->d_inode);
         orig_dvnode = AFS_FS_I(old_dir);
         new_dvnode = AFS_FS_I(new_dir);
diff --git a/fs/bfs/dir.c b/fs/bfs/dir.c
index b14cebfd9047..c7d1d06b0483 100644
--- a/fs/bfs/dir.c
+++ b/fs/bfs/dir.c
@@ -224,6 +224,9 @@ static int bfs_rename(struct inode *old_dir, struct dentry *old_dentry,
         struct bfs_sb_info *info;
         int error = -ENOENT;
 
+        if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         old_bh = new_bh = NULL;
         old_inode = old_dentry->d_inode;
         if (S_ISDIR(old_inode->i_mode))
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index c692dad3de18..3a33ae3ace5b 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6994,6 +6994,9 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
         u64 root_objectid;
         int ret;
 
+        if (new_inode && S_ISDIR(new_dentry->d_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         if (new_dir->i_ino == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID)
                 return -EPERM;
 
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index d2e549023ded..377b96404235 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -869,6 +869,9 @@ static int ceph_rename(struct inode *old_dir, struct dentry *old_dentry,
         struct ceph_mds_request *req;
         int err;
 
+        if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         if (ceph_snap(old_dir) != ceph_snap(new_dir))
                 return -EXDEV;
         if (ceph_snap(old_dir) != CEPH_NOSNAP ||
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index cee5896bcf56..18546b75f384 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1571,6 +1571,9 @@ int cifs_rename(struct inode *source_dir, struct dentry *source_dentry,
         FILE_UNIX_BASIC_INFO *info_buf_target;
         int xid, rc, tmprc;
 
+        if (target_dentry->d_inode && S_ISDIR(target_dentry->d_inode->i_mode))
+                dentry_unhash(target_dentry);
+
         cifs_sb = CIFS_SB(source_dir->i_sb);
         tlink = cifs_sb_tlink(cifs_sb);
         if (IS_ERR(tlink))
diff --git a/fs/coda/dir.c b/fs/coda/dir.c
index 9f72b75a1def..a46126fd5735 100644
--- a/fs/coda/dir.c
+++ b/fs/coda/dir.c
@@ -361,6 +361,9 @@ static int coda_rename(struct inode *old_dir, struct dentry *old_dentry,
         int new_length = new_dentry->d_name.len;
         int error;
 
+        if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         error = venus_rename(old_dir->i_sb, coda_i2f(old_dir),
                              coda_i2f(new_dir), old_length, new_length,
                              (const char *) old_name, (const char *)new_name);
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index c88612f0c1eb..227b409b8406 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -573,6 +573,9 @@ ecryptfs_rename(struct inode *old_dir, struct dentry *old_dentry,
         struct dentry *lower_new_dir_dentry;
         struct dentry *trap = NULL;
 
+        if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         lower_old_dentry = ecryptfs_dentry_to_lower(old_dentry);
         lower_new_dentry = ecryptfs_dentry_to_lower(new_dentry);
         dget(lower_old_dentry);
diff --git a/fs/exofs/namei.c b/fs/exofs/namei.c
index 0697175d1a38..de252e5acf05 100644
--- a/fs/exofs/namei.c
+++ b/fs/exofs/namei.c
@@ -251,6 +251,9 @@ static int exofs_rename(struct inode *old_dir, struct dentry *old_dentry,
         struct exofs_dir_entry *old_de;
         int err = -ENOENT;
 
+        if (new_inode && S_ISDIR(new_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         old_de = exofs_find_entry(old_dir, old_dentry, &old_page);
         if (!old_de)
                 goto out;
diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c
index 7a5ad9762de9..516c31dab97c 100644
--- a/fs/ext2/namei.c
+++ b/fs/ext2/namei.c
@@ -320,6 +320,9 @@ static int ext2_rename (struct inode * old_dir, struct dentry * old_dentry,
         struct ext2_dir_entry_2 * old_de;
         int err = -ENOENT;
 
+        if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         dquot_initialize(old_dir);
         dquot_initialize(new_dir);
 
diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
index 552f94d7cf3d..f89b1d4c2fb5 100644
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -2298,6 +2298,9 @@ static int ext3_rename (struct inode * old_dir, struct dentry *old_dentry,
         struct ext3_dir_entry_2 * old_de, * new_de;
         int retval, flush_file = 0;
 
+        if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         dquot_initialize(old_dir);
         dquot_initialize(new_dir);
 
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 957580daad78..792d06e811c1 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2352,6 +2352,9 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
         struct ext4_dir_entry_2 *old_de, *new_de;
         int retval, force_da_alloc = 0;
 
+        if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         dquot_initialize(old_dir);
         dquot_initialize(new_dir);
 
diff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c
index 0c25cea64d24..c3eccbd02037 100644
--- a/fs/fat/namei_msdos.c
+++ b/fs/fat/namei_msdos.c
@@ -459,6 +459,9 @@ static int do_msdos_rename(struct inode *old_dir, unsigned char *old_name,
         old_inode = old_dentry->d_inode;
         new_inode = new_dentry->d_inode;
 
+        if (new_inode && S_ISDIR(new_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         err = fat_scan(old_dir, old_name, &old_sinfo);
         if (err) {
                 err = -EIO;
diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c
index d7b9383bb9c2..e2466b2f8cf2 100644
--- a/fs/fat/namei_vfat.c
+++ b/fs/fat/namei_vfat.c
@@ -933,6 +933,9 @@ static int vfat_rename(struct inode *old_dir, struct dentry *old_dentry,
         int err, is_dir, update_dotdot, corrupt = 0;
         struct super_block *sb = old_dir->i_sb;
 
+        if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         old_sinfo.bh = sinfo.bh = dotdot_bh = NULL;
         old_inode = old_dentry->d_inode;
         new_inode = new_dentry->d_inode;
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 40d5c2ae4e73..e462a7a281bf 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -693,6 +693,10 @@ static int fuse_rename(struct inode *olddir, struct dentry *oldent,
         struct fuse_rename_in inarg;
         struct fuse_conn *fc = get_fuse_conn(olddir);
         struct fuse_req *req = fuse_get_req(fc);
+
+        if (newent->d_inode && S_ISDIR(newent->d_inode->i_mode))
+                dentry_unhash(newent);
+
         if (IS_ERR(req))
                 return PTR_ERR(req);
 
diff --git a/fs/hfs/dir.c b/fs/hfs/dir.c
index 616cfe02b601..1cb70cdba2c1 100644
--- a/fs/hfs/dir.c
+++ b/fs/hfs/dir.c
@@ -286,6 +286,9 @@ static int hfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 
         /* Unlink destination if it already exists */
         if (new_dentry->d_inode) {
+                if (S_ISDIR(new_dentry->d_inode->i_mode))
+                        dentry_unhash(new_dentry);
+
                 res = hfs_remove(new_dir, new_dentry);
                 if (res)
                         return res;
diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c
index 23451a955aa0..b28835091dd0 100644
--- a/fs/hfsplus/dir.c
+++ b/fs/hfsplus/dir.c
@@ -469,10 +469,12 @@ static int hfsplus_rename(struct inode *old_dir, struct dentry *old_dentry,
 
         /* Unlink destination if it already exists */
         if (new_dentry->d_inode) {
-                if (S_ISDIR(new_dentry->d_inode->i_mode))
+                if (S_ISDIR(new_dentry->d_inode->i_mode)) {
+                        dentry_unhash(new_dentry);
                         res = hfsplus_rmdir(new_dir, new_dentry);
-                else
+                } else {
                         res = hfsplus_unlink(new_dir, new_dentry);
+                }
                 if (res)
                         return res;
         }
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index 73ea3ba3e658..e6816b9e6903 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -738,6 +738,9 @@ int hostfs_rename(struct inode *from_ino, struct dentry *from,
         char *from_name, *to_name;
         int err;
 
+        if (to->d_inode && S_ISDIR(to->d_inode->i_mode))
+                dentry_unhash(to);
+
         if ((from_name = dentry_name(from)) == NULL)
                 return -ENOMEM;
         if ((to_name = dentry_name(to)) == NULL) {
diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c
index b9fe158fd7ba..d3db95f51a4e 100644
--- a/fs/hpfs/namei.c
+++ b/fs/hpfs/namei.c
@@ -561,6 +561,10 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
         struct buffer_head *bh;
         struct fnode *fnode;
         int err;
+
+        if (new_inode && S_ISDIR(new_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         if ((err = hpfs_chk_name(new_name, &new_len))) return err;
         err = 0;
         hpfs_adjust_length(old_name, &old_len);
diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c
index 727d64439cd1..05f73328b28b 100644
--- a/fs/jffs2/dir.c
+++ b/fs/jffs2/dir.c
@@ -786,6 +786,9 @@ static int jffs2_rename (struct inode *old_dir_i, struct dentry *old_dentry,
         uint8_t type;
         uint32_t now;
 
+        if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         /* The VFS will check for us and prevent trying to rename a
          * file over a directory and vice versa, but if it's a directory,
          * the VFS can't check whether the victim is empty. The filesystem
diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c
index 0569daca86ad..865df16a6cf3 100644
--- a/fs/jfs/namei.c
+++ b/fs/jfs/namei.c
@@ -1097,6 +1097,9 @@ static int jfs_rename(struct inode *old_dir, struct dentry *old_dentry,
         jfs_info("jfs_rename: %s %s", old_dentry->d_name.name,
                  new_dentry->d_name.name);
 
+        if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         dquot_initialize(old_dir);
         dquot_initialize(new_dir);
 
diff --git a/fs/libfs.c b/fs/libfs.c
index 1e2ba5a96b10..91a3710e0fe5 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -325,6 +325,9 @@ int simple_rename(struct inode *old_dir, struct dentry *old_dentry,
         struct inode *inode = old_dentry->d_inode;
         int they_are_dirs = S_ISDIR(old_dentry->d_inode->i_mode);
 
+        if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         if (!simple_empty(new_dentry))
                 return -ENOTEMPTY;
 
diff --git a/fs/logfs/dir.c b/fs/logfs/dir.c
index 2b32734cd31a..f34c9cde9e94 100644
--- a/fs/logfs/dir.c
+++ b/fs/logfs/dir.c
@@ -624,6 +624,9 @@ static int logfs_rename_cross(struct inode *old_dir, struct dentry *old_dentry,
         loff_t pos;
         int err;
 
+        if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         /* 1. locate source dd */
         err = logfs_get_dd(old_dir, old_dentry, &dd, &pos);
         if (err)
diff --git a/fs/minix/namei.c b/fs/minix/namei.c
index 091626f5577d..f60aed8db9c4 100644
--- a/fs/minix/namei.c
+++ b/fs/minix/namei.c
@@ -192,6 +192,9 @@ static int minix_rename(struct inode * old_dir, struct dentry *old_dentry,
         struct minix_dir_entry * old_de;
         int err = -ENOENT;
 
+        if (new_inode && S_ISDIR(new_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         old_de = minix_find_entry(old_dentry, &old_page);
         if (!old_de)
                 goto out;
diff --git a/fs/namei.c b/fs/namei.c
index 596edb5094a4..787ebc8a200a 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2950,12 +2950,7 @@ SYSCALL_DEFINE2(link, const char __user *, oldname, const char __user *, newname
  *         HOWEVER, it relies on the assumption that any object with ->lookup()
  *         has no more than 1 dentry.  If "hybrid" objects will ever appear,
  *         we'd better make sure that there's no link(2) for them.
- *      d) some filesystems don't support opened-but-unlinked directories,
- *         either because of layout or because they are not ready to deal with
- *         all cases correctly. The latter will be fixed (taking this sort of
- *         stuff into VFS), but the former is not going away. Solution: the same
- *         trick as in rmdir().
- *      e) conversion from fhandle to dentry may come in the wrong moment - when
+ *      d) conversion from fhandle to dentry may come in the wrong moment - when
  *         we are removing the target. Solution: we will have to grab ->i_mutex
  *         in the fhandle_to_dentry code. [FIXME - current nfsfh.c relies on
  *         ->i_mutex on parents, which works but leads to some truly excessive
@@ -2986,11 +2981,8 @@ static int vfs_rename_dir(struct inode *old_dir, struct dentry *old_dentry,
                 mutex_lock(&target->i_mutex);
         if (d_mountpoint(old_dentry)||d_mountpoint(new_dentry))
                 error = -EBUSY;
-        else {
-                if (target)
-                        dentry_unhash(new_dentry);
+        else
                 error = old_dir->i_op->rename(old_dir, old_dentry, new_dir, new_dentry);
-        }
         if (target) {
                 if (!error) {
                         target->i_flags |= S_DEAD;
diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c
index 57336b7cb55e..e3e646b06404 100644
--- a/fs/ncpfs/dir.c
+++ b/fs/ncpfs/dir.c
@@ -1141,6 +1141,9 @@ static int ncp_rename(struct inode *old_dir, struct dentry *old_dentry,
                 old_dentry->d_parent->d_name.name, old_dentry->d_name.name,
                 new_dentry->d_parent->d_name.name, new_dentry->d_name.name);
 
+        if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         ncp_age_dentry(server, old_dentry);
         ncp_age_dentry(server, new_dentry);
 
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 48483b562361..87daf7982186 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1959,6 +1959,9 @@ static int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
                  new_dentry->d_parent->d_name.name, new_dentry->d_name.name,
                  new_dentry->d_count);
 
+        if (new_inode && S_ISDIR(new_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         /*
          * For non-directories, check whether the target is busy and if so,
          * make a copy of the dentry and then do a silly-rename. If the
diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c
index 78306e6462e3..1102a5fbb744 100644
--- a/fs/nilfs2/namei.c
+++ b/fs/nilfs2/namei.c
@@ -371,6 +371,9 @@ static int nilfs_rename(struct inode *old_dir, struct dentry *old_dentry,
         struct nilfs_transaction_info ti;
         int err;
 
+        if (new_inode && S_ISDIR(new_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         err = nilfs_transaction_begin(old_dir->i_sb, &ti, 1);
         if (unlikely(err))
                 return err;
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index b017ebbaf3fa..f3582a6a6dac 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -1066,6 +1066,9 @@ static int ocfs2_rename(struct inode *old_dir,
         struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
         struct ocfs2_dir_lookup_result target_insert = { NULL, };
 
+        if (new_inode && S_ISDIR(new_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         /* At some point it might be nice to break this function up a
          * bit. */
 
diff --git a/fs/omfs/dir.c b/fs/omfs/dir.c
index 95ef4433d1a3..c368360c35a1 100644
--- a/fs/omfs/dir.c
+++ b/fs/omfs/dir.c
@@ -382,6 +382,9 @@ static int omfs_rename(struct inode *old_dir, struct dentry *old_dentry,
         int err;
 
         if (new_inode) {
+                if (S_ISDIR(new_inode->i_mode))
+                        dentry_unhash(new_dentry);
+
                 /* overwriting existing file/dir */
                 err = omfs_remove(new_dir, new_dentry);
                 if (err)
diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c
index 43e94f0f60ba..76c8164d5651 100644
--- a/fs/reiserfs/namei.c
+++ b/fs/reiserfs/namei.c
@@ -1227,6 +1227,9 @@ static int reiserfs_rename(struct inode *old_dir, struct dentry *old_dentry,
         unsigned long savelink = 1;
         struct timespec ctime;
 
+        if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         /* three balancings: (1) old name removal, (2) new name insertion
            and (3) maybe "save" link insertion
            stat data updates: (1) old directory,
diff --git a/fs/sysv/namei.c b/fs/sysv/namei.c
index fac64ac31869..e2cc6756f3b1 100644
--- a/fs/sysv/namei.c
+++ b/fs/sysv/namei.c
@@ -224,6 +224,9 @@ static int sysv_rename(struct inode * old_dir, struct dentry * old_dentry,
         struct sysv_dir_entry * old_de;
         int err = -ENOENT;
 
+        if (new_inode && S_ISDIR(new_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         old_de = sysv_find_entry(old_dentry, &old_page);
         if (!old_de)
                 goto out;
diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index 6ca9176c8f59..d80810bb4c37 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -978,6 +978,9 @@ static int ubifs_rename(struct inode *old_dir, struct dentry *old_dentry,
                         .dirtied_ino_d = ALIGN(old_inode_ui->data_len, 8) };
         struct timespec time;
 
+        if (new_inode && S_ISDIR(new_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         /*
          * Budget request settings: deletion direntry, new direntry, removing
          * the old inode, and changing old and new parent directory inodes.
diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index b70f026302a5..4d76594c2a8f 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -1083,6 +1083,9 @@ static int udf_rename(struct inode *old_dir, struct dentry *old_dentry,
         struct kernel_lb_addr tloc;
         struct udf_inode_info *old_iinfo = UDF_I(old_inode);
 
+        if (new_inode && S_ISDIR(new_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         ofi = udf_find_entry(old_dir, &old_dentry->d_name, &ofibh, &ocfi);
         if (ofi) {
                 if (ofibh.sbh != ofibh.ebh)
diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c
index 3a769d56c689..953ebdfc5bf7 100644
--- a/fs/ufs/namei.c
+++ b/fs/ufs/namei.c
@@ -284,6 +284,9 @@ static int ufs_rename(struct inode *old_dir, struct dentry *old_dentry,
         struct ufs_dir_entry *old_de;
         int err = -ENOENT;
 
+        if (new_inode && S_ISDIR(new_inode->i_mode))
+                dentry_unhash(new_dentry);
+
         old_de = ufs_find_entry(old_dir, &old_dentry->d_name, &old_page);
         if (!old_de)
                 goto out;