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-rw-r--r--fs/cifs/cifsfs.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 94e3ed4850b5..c31f362fa098 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -1208,6 +1208,10 @@ static ssize_t cifs_copy_file_range(struct file *src_file, loff_t off,
{
unsigned int xid = get_xid();
ssize_t rc;
+ struct cifsFileInfo *cfile = dst_file->private_data;
+
+ if (cfile->swapfile)
+ return -EOPNOTSUPP;
rc = cifs_file_copychunk_range(xid, src_file, off, dst_file, destoff,
len, flags);