Re: [PATCH] Do not return number of bytes written for ioctl CIFS_IOC_COPYCHUNK_FILE

From: Steve French <smfrench-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Pavel Shilovsky <piastryyy-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Sachin Prabhu <sprabhu-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	linux-cifs <linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [PATCH] Do not return number of bytes written for ioctl CIFS_IOC_COPYCHUNK_FILE
Date: Thu, 27 Apr 2017 15:08:39 -0500	[thread overview]
Message-ID: <CAH2r5muiF8FnzvLNx3iaCkj8QNEjkd8+D8TEqevMOO_oH7gfNA@mail.gmail.com> (raw)
In-Reply-To: <CAKywueQ+sa9d2aTCRkUzuUeeYcEn4++dM2ru2W2t-Dq1yCHvvQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>

merged into cifs-2.6.git for-next

On Wed, Apr 26, 2017 at 6:37 PM, Pavel Shilovsky <piastryyy-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> 2017-04-26 9:10 GMT-07:00 Sachin Prabhu <sprabhu-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>:
>> commit 620d8745b35d ("Introduce cifs_copy_file_range()") changes the
>> behaviour of the cifs ioctl call CIFS_IOC_COPYCHUNK_FILE. In case of
>> successful writes, it now returns the number of bytes written. This
>> return value is treated as an error by the xfstest cifs/001. Depending
>> on the errno set at that time, this may or may not result in the test
>> failing.
>>
>> The patch fixes this by setting the return value to 0 in case of
>> successful writes.
>>
>> Fixes: commit 620d8745b35d ("Introduce cifs_copy_file_range()")
>> Reported-by: Eryu Guan <eguan-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
>> Signed-off-by: Sachin Prabhu <sprabhu-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
>> ---
>>  fs/cifs/ioctl.c | 3 ++-
>>  1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c
>> index 265c45f..7f4bba5 100644
>> --- a/fs/cifs/ioctl.c
>> +++ b/fs/cifs/ioctl.c
>> @@ -74,7 +74,8 @@ static long cifs_ioctl_copychunk(unsigned int xid, struct file *dst_file,
>>
>>         rc = cifs_file_copychunk_range(xid, src_file.file, 0, dst_file, 0,
>>                                         src_inode->i_size, 0);
>> -
>> +       if (rc > 0)
>> +               rc = 0;
>>  out_fput:
>>         fdput(src_file);
>>  out_drop_write:
>> --
>> 2.9.3
>>
>> --
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>
> Acked-by: Pavel Shilovsky <pshilov-0li6OtcxBFHby3iVrkZq2A@public.gmane.org>
>
> --
> Best regards,
> Pavel Shilovsky
> --
> To unsubscribe from this list: send the line "unsubscribe linux-cifs" in
> the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
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-- 
Thanks,

Steve