1 files changed, 8 insertions, 3 deletions

diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c
index 28a77bf1d559..35cf990f87d3 100644
--- a/fs/cifs/ioctl.c
+++ b/fs/cifs/ioctl.c
@@ -85,9 +85,14 @@ static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file,
         src_tcon = tlink_tcon(smb_file_src->tlink);
         target_tcon = tlink_tcon(smb_file_target->tlink);
 
-        /* check if source and target are on same tree connection */
-        if (src_tcon != target_tcon) {
-                cifs_dbg(VFS, "file copy src and target on different volume\n");
+        /* check source and target on same server (or volume if dup_extents) */
+        if (dup_extents && (src_tcon != target_tcon)) {
+                cifs_dbg(VFS, "source and target of copy not on same share\n");
+                goto out_fput;
+        }
+
+        if (!dup_extents && (src_tcon->ses != target_tcon->ses)) {
+                cifs_dbg(VFS, "source and target of copy not on same server\n");
                 goto out_fput;
         }