On 8/18/22 7:27 PM, Sun Ke wrote:
>
>
> 在 2022/8/18 19:14, JeffleXu 写道:
>>
>>
>> On 8/18/22 7:19 PM, Sun Ke wrote:
>>> If size < 0; open request will fail, but cachefiles_ondemand_copen
>>> return 0.
>>> Fix to return a negative error code.
>>
>> Could you please also update the commit log?
>
> The cache_size field of copen is specified by the user daemon. If
> cache_size < 0, then the OPEN request is expected to fail, while copen
> itself shall succeed. However, return 0 is indeed unexpected when
^
returning
> cache_size is an invalid error code.
> Fix to return a negative error code.
Fix this by returning error when cache_size is an invalid error code.
>>
>> Otherwise LGTM.
>>
>> Reviewed-by: Jingbo Xu <jefflexu@xxxxxxxxxxxxxxxxx>
>>
>>
>> BTW, also cc linux-fsdevel@xxxxxxxxxxxxxxx
>>
>>>
>>> Fixes: c8383054506c ("cachefiles: notify the user daemon when looking
>>> up cookie")
>>> Signed-off-by: Sun Ke <sunke32@xxxxxxxxxx>
>>> ---
>>> fs/cachefiles/ondemand.c | 2 +-
>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/fs/cachefiles/ondemand.c b/fs/cachefiles/ondemand.c
>>> index 1fee702d5529..ea8a1e8317d9 100644
>>> --- a/fs/cachefiles/ondemand.c
>>> +++ b/fs/cachefiles/ondemand.c
>>> @@ -159,7 +159,7 @@ int cachefiles_ondemand_copen(struct
>>> cachefiles_cache *cache, char *args)
>>> /* fail OPEN request if daemon reports an error */
>>> if (size < 0) {
>>> if (!IS_ERR_VALUE(size))
>>> - size = -EINVAL;
>>> + ret = size = -EINVAL;
>>> req->error = size;
>>> goto out;
>>> }
>>
--
Thanks,
Jingbo
