Reviewed-by: Pavel Shilovsky <pshilov@xxxxxxxxxxxxx>
--
Best regards,
Pavel Shilovsky
пт, 13 мар. 2020 г. в 20:40, Murphy Zhou <jencce.kernel@xxxxxxxxx>:
>
> 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
