If we call fiemap on a truncated file with none blocks allocated,
it makes sense we get nothing from this call. No output means
no blocks have been counted, but the call succeeded. It's a valid
response.
Signed-off-by: Murphy Zhou <jencce.kernel@xxxxxxxxx>
---
fs/cifs/smb2ops.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index c31e84ee3c39..32b7f9795d4a 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -3417,7 +3417,7 @@ static int smb3_fiemap(struct cifs_tcon *tcon,
if (rc)
goto out;
- if (out_data_len < sizeof(struct file_allocated_range_buffer)) {
+ if (out_data_len && out_data_len < sizeof(struct file_allocated_range_buffer)) {
rc = -EINVAL;
goto out;
}
--
2.20.1
